## v0.9.18

- 增加 PostgreSQL 的 Odbc 访问提供，相比 FreeSql.Provider.PostgreSQL 支持的类型更少；
- 增加 通用的 Odbc 访问提供，不能迁移实体到数据库，不能 Skip 这样来分页，理论上能 crud 所有 odbc 数据库；

Extensions/FreeSql.Extensions.BaseEntity/FreeSql.Extensions.BaseEntity.csproj

@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <TargetFrameworks>netstandard2.0</TargetFrameworks>
-        <Version>0.9.17</Version>
+        <Version>0.9.18</Version>
         <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
         <Authors>YeXiangQin</Authors>
         <Description>BaseEntity 是一种极简单的 CodeFirst 开发方式，特别对单表或多表CRUD，利用继承节省了每个实体类的重复属性（创建时间、ID等字段），软件删除等功能，进行 crud 操作时不必时常考虑仓储的使用.</Description>

Extensions/FreeSql.Extensions.JsonMap/FreeSql.Extensions.JsonMap.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
-		<Version>0.9.17</Version>
+		<Version>0.9.18</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql 扩展包，可实现实体类属性为对象时，以JSON形式映射存储.</Description>

Extensions/FreeSql.Extensions.LazyLoading/FreeSql.Extensions.LazyLoading.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
-		<Version>0.9.17</Version>
+		<Version>0.9.18</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql 扩展包，可实现【延时加载】属性.</Description>

FreeSql.DbContext/DbSet/DbSet.cs

@@ -234,15 +234,13 @@ namespace FreeSql
                 switch (_db.Orm.Ado.DataType)
                 {
                     case DataType.SqlServer:
+                    case DataType.OdbcSqlServer:
                     case DataType.PostgreSQL:
+                    case DataType.OdbcPostgreSQL:
                         return true;
-                    case DataType.MySql:
-                    case DataType.Oracle:
-                    case DataType.Sqlite:
+                    default:
                         if (_tableIdentitys.Length == 1 && _table.Primarys.Length == 1)
-                        {
                             return true;
-                        }
                         if (isThrow) throw new Exception($"不可添加，未设置主键的值：{_db.Orm.GetEntityString(_entityType, data)}");
                         return false;
                 }

FreeSql.DbContext/DbSet/DbSetAsync.cs

@@ -34,7 +34,9 @@ namespace FreeSql
                 switch (_db.Orm.Ado.DataType)
                 {
                     case DataType.SqlServer:
+                    case DataType.OdbcSqlServer:
                     case DataType.PostgreSQL:
+                    case DataType.OdbcPostgreSQL:
                         if (_tableIdentitys.Length == 1 && _table.Primarys.Length == 1)
                         {
                             await DbContextExecCommandAsync();
@@ -56,9 +58,7 @@ namespace FreeSql
                                 await AddOrUpdateNavigateListAsync(data);
                         }
                         return;
-                    case DataType.MySql:
-                    case DataType.Oracle:
-                    case DataType.Sqlite:
+                    default:
                         if (_tableIdentitys.Length == 1 && _table.Primarys.Length == 1)
                         {
                             await DbContextExecCommandAsync();
@@ -92,7 +92,9 @@ namespace FreeSql
                 switch (_db.Orm.Ado.DataType)
                 {
                     case DataType.SqlServer:
+                    case DataType.OdbcSqlServer:
                     case DataType.PostgreSQL:
+                    case DataType.OdbcPostgreSQL:
                         await DbContextExecCommandAsync();
                         var rets = await this.OrmInsert(data).ExecuteInsertedAsync();
                         if (rets.Count != data.Count()) throw new Exception($"特别错误：批量添加失败，{_db.Orm.Ado.DataType} 的返回数据，与添加的数目不匹配");
@@ -105,9 +107,7 @@ namespace FreeSql
                             foreach (var item in data)
                                 await AddOrUpdateNavigateListAsync(item);
                         return;
-                    case DataType.MySql:
-                    case DataType.Oracle:
-                    case DataType.Sqlite:
+                    default:
                         foreach (var s in data)
                             await AddPrivAsync(s, false);
                         return;

FreeSql.DbContext/DbSet/DbSetSync.cs

@@ -34,7 +34,9 @@ namespace FreeSql
                 switch (_db.Orm.Ado.DataType)
                 {
                     case DataType.SqlServer:
+                    case DataType.OdbcSqlServer:
                     case DataType.PostgreSQL:
+                    case DataType.OdbcPostgreSQL:
                         if (_tableIdentitys.Length == 1)
                         {
                             DbContextExecCommand();
@@ -56,9 +58,7 @@ namespace FreeSql
                                 AddOrUpdateNavigateList(data);
                         }
                         return;
-                    case DataType.MySql:
-                    case DataType.Oracle:
-                    case DataType.Sqlite:
+                    default:
                         if (_tableIdentitys.Length == 1)
                         {
                             DbContextExecCommand();
@@ -96,7 +96,9 @@ namespace FreeSql
                 switch (_db.Orm.Ado.DataType)
                 {
                     case DataType.SqlServer:
+                    case DataType.OdbcSqlServer:
                     case DataType.PostgreSQL:
+                    case DataType.OdbcPostgreSQL:
                         DbContextExecCommand();
                         var rets = this.OrmInsert(data).ExecuteInserted();
                         if (rets.Count != data.Count()) throw new Exception($"特别错误：批量添加失败，{_db.Orm.Ado.DataType} 的返回数据，与添加的数目不匹配");
@@ -109,9 +111,7 @@ namespace FreeSql
                             foreach (var item in data)
                                 AddOrUpdateNavigateList(item);
                         return;
-                    case DataType.MySql:
-                    case DataType.Oracle:
-                    case DataType.Sqlite:
+                    default:
                         foreach (var s in data)
                             AddPriv(s, false);
                         return;

FreeSql.DbContext/FreeSql.DbContext.csproj

@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
-        <Version>0.9.17</Version>
+        <Version>0.9.18</Version>
         <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
         <Authors>YeXiangQin</Authors>
         <Description>FreeSql is the most convenient ORM in dotnet. It supports Mysql, Postgresql, SqlServer, Oracle and Sqlite.</Description>

FreeSql.Repository/FreeSql.Repository.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
-		<Version>0.9.17</Version>
+		<Version>0.9.18</Version>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql Implementation of General Repository, Support MySql/SqlServer/PostgreSQL/Oracle/Sqlite, and read/write separation、and split table.</Description>
 		<PackageProjectUrl>https://github.com/2881099/FreeSql/wiki/Repository</PackageProjectUrl>

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/Curd/OdbcDeleteTest.cs

@@ -0,0 +1,90 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.Default
+{
+    public class OdbcDeleteTest
+    {
+        IDelete<Topic> delete => g.odbc.Delete<Topic>(); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+
+        [Table(Name = "tb_topic22211")]
+        class Topic
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int? Clicks { get; set; }
+            public TestTypeInfo Type { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+
+        [Fact]
+        public void Dywhere()
+        {
+            Assert.Null(g.odbc.Delete<Topic>().ToSql());
+            var sql = g.odbc.Delete<Topic>(new[] { 1, 2 }).ToSql();
+            Assert.Equal("DELETE FROM [tb_topic22211] WHERE ([Id] = 1 OR [Id] = 2)", sql);
+
+            sql = g.odbc.Delete<Topic>(new Topic { Id = 1, Title = "test" }).ToSql();
+            Assert.Equal("DELETE FROM [tb_topic22211] WHERE ([Id] = 1)", sql);
+
+            sql = g.odbc.Delete<Topic>(new[] { new Topic { Id = 1, Title = "test" }, new Topic { Id = 2, Title = "test" } }).ToSql();
+            Assert.Equal("DELETE FROM [tb_topic22211] WHERE ([Id] = 1 OR [Id] = 2)", sql);
+
+            sql = g.odbc.Delete<Topic>(new { id = 1 }).ToSql();
+            Assert.Equal("DELETE FROM [tb_topic22211] WHERE ([Id] = 1)", sql);
+        }
+
+        [Fact]
+        public void Where()
+        {
+            var sql = delete.Where(a => a.Id == 1).ToSql().Replace("\r\n", "");
+            Assert.Equal("DELETE FROM [tb_topic22211] WHERE ([Id] = 1)", sql);
+
+            sql = delete.Where("id = @id", new { id = 1 }).ToSql().Replace("\r\n", "");
+            Assert.Equal("DELETE FROM [tb_topic22211] WHERE (id = @id)", sql);
+
+            var item = new Topic { Id = 1, Title = "newtitle" };
+            sql = delete.Where(item).ToSql().Replace("\r\n", "");
+            Assert.Equal("DELETE FROM [tb_topic22211] WHERE ([Id] = 1)", sql);
+
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100 });
+
+            sql = delete.Where(items).ToSql().Replace("\r\n", "");
+            Assert.Equal("DELETE FROM [tb_topic22211] WHERE ([Id] IN (1,2,3,4,5,6,7,8,9,10))", sql);
+        }
+        [Fact]
+        public void WhereExists()
+        {
+
+        }
+        [Fact]
+        public void ExecuteAffrows()
+        {
+
+            var id = g.odbc.Insert<Topic>(new Topic { Title = "xxxx", CreateTime = DateTime.Now }).ExecuteIdentity();
+            Assert.Equal(1, delete.Where(a => a.Id == id).ExecuteAffrows());
+        }
+
+        [Fact]
+        public void AsTable()
+        {
+            Assert.Null(g.odbc.Delete<Topic>().ToSql());
+            var sql = g.odbc.Delete<Topic>(new[] { 1, 2 }).AsTable(a => "tb_topic22211AsTable").ToSql();
+            Assert.Equal("DELETE FROM [tb_topic22211AsTable] WHERE ([Id] = 1 OR [Id] = 2)", sql);
+
+            sql = g.odbc.Delete<Topic>(new Topic { Id = 1, Title = "test" }).AsTable(a => "tb_topic22211AsTable").ToSql();
+            Assert.Equal("DELETE FROM [tb_topic22211AsTable] WHERE ([Id] = 1)", sql);
+
+            sql = g.odbc.Delete<Topic>(new[] { new Topic { Id = 1, Title = "test" }, new Topic { Id = 2, Title = "test" } }).AsTable(a => "tb_topic22211AsTable").ToSql();
+            Assert.Equal("DELETE FROM [tb_topic22211AsTable] WHERE ([Id] = 1 OR [Id] = 2)", sql);
+
+            sql = g.odbc.Delete<Topic>(new { id = 1 }).AsTable(a => "tb_topic22211AsTable").ToSql();
+            Assert.Equal("DELETE FROM [tb_topic22211AsTable] WHERE ([Id] = 1)", sql);
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/Curd/OdbcInsertTest.cs

@@ -0,0 +1,141 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.Default
+{
+    public class OdbcInsertTest
+    {
+        IInsert<Topic> insert => g.odbc.Insert<Topic>(); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+
+        [Table(Name = "tb_topic")]
+        class Topic
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int? Clicks { get; set; }
+            public int TypeGuid { get; set; }
+            public TestTypeInfo Type { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+
+        [Fact]
+        public void AppendData()
+        {
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100, CreateTime = DateTime.Parse("2019-09-19 20:09:37") });
+
+            var sql = insert.IgnoreColumns(a => a.TypeGuid).AppendData(items.First()).ToSql();
+            Assert.Equal("INSERT INTO [tb_topic]([Clicks], [Title], [CreateTime]) VALUES(0, N'newtitle0', '2019-09-19 20:09:37')", sql);
+
+            sql = insert.IgnoreColumns(a => a.TypeGuid).AppendData(items).ToSql();
+            Assert.Equal("INSERT INTO [tb_topic]([Clicks], [Title], [CreateTime]) VALUES(0, N'newtitle0', '2019-09-19 20:09:37'), (100, N'newtitle1', '2019-09-19 20:09:37'), (200, N'newtitle2', '2019-09-19 20:09:37'), (300, N'newtitle3', '2019-09-19 20:09:37'), (400, N'newtitle4', '2019-09-19 20:09:37'), (500, N'newtitle5', '2019-09-19 20:09:37'), (600, N'newtitle6', '2019-09-19 20:09:37'), (700, N'newtitle7', '2019-09-19 20:09:37'), (800, N'newtitle8', '2019-09-19 20:09:37'), (900, N'newtitle9', '2019-09-19 20:09:37')", sql);
+
+            sql = insert.AppendData(items).InsertColumns(a => a.Title).ToSql();
+            Assert.Equal("INSERT INTO [tb_topic]([Title]) VALUES(N'newtitle0'), (N'newtitle1'), (N'newtitle2'), (N'newtitle3'), (N'newtitle4'), (N'newtitle5'), (N'newtitle6'), (N'newtitle7'), (N'newtitle8'), (N'newtitle9')", sql);
+
+            sql = insert.IgnoreColumns(a => new { a.CreateTime, a.TypeGuid }).AppendData(items).ToSql();
+            Assert.Equal("INSERT INTO [tb_topic]([Clicks], [Title]) VALUES(0, N'newtitle0'), (100, N'newtitle1'), (200, N'newtitle2'), (300, N'newtitle3'), (400, N'newtitle4'), (500, N'newtitle5'), (600, N'newtitle6'), (700, N'newtitle7'), (800, N'newtitle8'), (900, N'newtitle9')", sql);
+        }
+
+        [Fact]
+        public void InsertColumns()
+        {
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100, CreateTime = DateTime.Now });
+
+            var sql = insert.AppendData(items).InsertColumns(a => a.Title).ToSql();
+            Assert.Equal("INSERT INTO [tb_topic]([Title]) VALUES(N'newtitle0'), (N'newtitle1'), (N'newtitle2'), (N'newtitle3'), (N'newtitle4'), (N'newtitle5'), (N'newtitle6'), (N'newtitle7'), (N'newtitle8'), (N'newtitle9')", sql);
+
+            sql = insert.AppendData(items).InsertColumns(a => new { a.Title, a.Clicks }).ToSql();
+            Assert.Equal("INSERT INTO [tb_topic]([Clicks], [Title]) VALUES(0, N'newtitle0'), (100, N'newtitle1'), (200, N'newtitle2'), (300, N'newtitle3'), (400, N'newtitle4'), (500, N'newtitle5'), (600, N'newtitle6'), (700, N'newtitle7'), (800, N'newtitle8'), (900, N'newtitle9')", sql);
+        }
+        [Fact]
+        public void IgnoreColumns()
+        {
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100, CreateTime = DateTime.Now });
+
+            var sql = insert.AppendData(items).IgnoreColumns(a => new { a.CreateTime, a.TypeGuid }).ToSql();
+            Assert.Equal("INSERT INTO [tb_topic]([Clicks], [Title]) VALUES(0, N'newtitle0'), (100, N'newtitle1'), (200, N'newtitle2'), (300, N'newtitle3'), (400, N'newtitle4'), (500, N'newtitle5'), (600, N'newtitle6'), (700, N'newtitle7'), (800, N'newtitle8'), (900, N'newtitle9')", sql);
+
+            sql = insert.AppendData(items).IgnoreColumns(a => new { a.Title, a.CreateTime, a.TypeGuid }).ToSql();
+            Assert.Equal("INSERT INTO [tb_topic]([Clicks]) VALUES(0), (100), (200), (300), (400), (500), (600), (700), (800), (900)", sql);
+
+            g.odbc.Delete<TopicIgnore>().Where("1=1").ExecuteAffrows();
+            var itemsIgnore = new List<TopicIgnore>();
+            for (var a = 0; a < 2072; a++) itemsIgnore.Add(new TopicIgnore { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100, CreateTime = DateTime.Now });
+            g.odbc.Insert<TopicIgnore>().AppendData(itemsIgnore).IgnoreColumns(a => new { a.Title }).ExecuteAffrows();
+            Assert.Equal(2072, itemsIgnore.Count);
+            Assert.Equal(2072, g.odbc.Select<TopicIgnore>().Where(a => a.Title == null).Count());
+        }
+        [Table(Name = "tb_topicIgnoreColumns")]
+        class TopicIgnore
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int Clicks { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+        [Fact]
+        public void ExecuteAffrows()
+        {
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100, CreateTime = DateTime.Now });
+
+            Assert.Equal(1, insert.AppendData(items.First()).ExecuteAffrows());
+            Assert.Equal(10, insert.AppendData(items).ExecuteAffrows());
+
+            //items = Enumerable.Range(0, 9989).Select(a => new Topic { Title = "newtitle" + a, CreateTime = DateTime.Now }).ToList();
+            //Assert.Equal(9989, g.odbc.Insert<Topic>(items).ExecuteAffrows());
+        }
+        [Fact]
+        public void ExecuteIdentity()
+        {
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100, CreateTime = DateTime.Now });
+
+            Assert.NotEqual(0, insert.AppendData(items.First()).ExecuteIdentity());
+
+
+            //items = Enumerable.Range(0, 9999).Select(a => new Topic { Title = "newtitle" + a, CreateTime = DateTime.Now }).ToList();
+            //var lastId = g.sqlite.Select<Topic>().Max(a => a.Id);
+            //Assert.NotEqual(lastId, g.odbc.Insert<Topic>(items).ExecuteIdentity());
+        }
+
+        [Fact]
+        public void AsTable()
+        {
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100, CreateTime = DateTime.Parse("2019-09-19 20:01:51") });
+
+            var sql = insert.IgnoreColumns(a => a.TypeGuid).AppendData(items.First()).AsTable(a => "tb_topicAsTable").ToSql();
+            Assert.Equal("INSERT INTO [tb_topicAsTable]([Clicks], [Title], [CreateTime]) VALUES(0, N'newtitle0', '2019-09-19 20:01:51')", sql);
+
+            sql = insert.IgnoreColumns(a => a.TypeGuid).AppendData(items).AsTable(a => "tb_topicAsTable").ToSql();
+            Assert.Equal("INSERT INTO [tb_topicAsTable]([Clicks], [Title], [CreateTime]) VALUES(0, N'newtitle0', '2019-09-19 20:01:51'), (100, N'newtitle1', '2019-09-19 20:01:51'), (200, N'newtitle2', '2019-09-19 20:01:51'), (300, N'newtitle3', '2019-09-19 20:01:51'), (400, N'newtitle4', '2019-09-19 20:01:51'), (500, N'newtitle5', '2019-09-19 20:01:51'), (600, N'newtitle6', '2019-09-19 20:01:51'), (700, N'newtitle7', '2019-09-19 20:01:51'), (800, N'newtitle8', '2019-09-19 20:01:51'), (900, N'newtitle9', '2019-09-19 20:01:51')", sql);
+
+            sql = insert.IgnoreColumns(a => a.TypeGuid).AppendData(items).InsertColumns(a => a.Title).AsTable(a => "tb_topicAsTable").ToSql();
+            Assert.Equal("INSERT INTO [tb_topicAsTable]([Title]) VALUES(N'newtitle0'), (N'newtitle1'), (N'newtitle2'), (N'newtitle3'), (N'newtitle4'), (N'newtitle5'), (N'newtitle6'), (N'newtitle7'), (N'newtitle8'), (N'newtitle9')", sql);
+
+            sql = insert.IgnoreColumns(a => new { a.CreateTime, a.TypeGuid }).AppendData(items).AsTable(a => "tb_topicAsTable").ToSql();
+            Assert.Equal("INSERT INTO [tb_topicAsTable]([Clicks], [Title]) VALUES(0, N'newtitle0'), (100, N'newtitle1'), (200, N'newtitle2'), (300, N'newtitle3'), (400, N'newtitle4'), (500, N'newtitle5'), (600, N'newtitle6'), (700, N'newtitle7'), (800, N'newtitle8'), (900, N'newtitle9')", sql);
+
+            sql = insert.IgnoreColumns(a => new { a.Title, a.TypeGuid }).InsertColumns(a => a.Title).AppendData(items).AsTable(a => "tb_topicAsTable").ToSql();
+            Assert.Equal("INSERT INTO [tb_topicAsTable]([Title]) VALUES(N'newtitle0'), (N'newtitle1'), (N'newtitle2'), (N'newtitle3'), (N'newtitle4'), (N'newtitle5'), (N'newtitle6'), (N'newtitle7'), (N'newtitle8'), (N'newtitle9')", sql);
+
+            sql = insert.IgnoreColumns(a => a.TypeGuid).AppendData(items).InsertColumns(a => new { a.Title, a.Clicks }).AsTable(a => "tb_topicAsTable").ToSql();
+            Assert.Equal("INSERT INTO [tb_topicAsTable]([Clicks], [Title]) VALUES(0, N'newtitle0'), (100, N'newtitle1'), (200, N'newtitle2'), (300, N'newtitle3'), (400, N'newtitle4'), (500, N'newtitle5'), (600, N'newtitle6'), (700, N'newtitle7'), (800, N'newtitle8'), (900, N'newtitle9')", sql);
+
+            sql = insert.IgnoreColumns(a => new { a.CreateTime, a.TypeGuid }).AppendData(items).AsTable(a => "tb_topicAsTable").ToSql();
+            Assert.Equal("INSERT INTO [tb_topicAsTable]([Clicks], [Title]) VALUES(0, N'newtitle0'), (100, N'newtitle1'), (200, N'newtitle2'), (300, N'newtitle3'), (400, N'newtitle4'), (500, N'newtitle5'), (600, N'newtitle6'), (700, N'newtitle7'), (800, N'newtitle8'), (900, N'newtitle9')", sql);
+
+            sql = insert.IgnoreColumns(a => new { a.CreateTime, a.Title, a.TypeGuid }).AppendData(items).AsTable(a => "tb_topicAsTable").ToSql();
+            Assert.Equal("INSERT INTO [tb_topicAsTable]([Clicks]) VALUES(0), (100), (200), (300), (400), (500), (600), (700), (800), (900)", sql);
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/Curd/OdbcUpdateTest.cs

@@ -0,0 +1,146 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.Default
+{
+    public class OdbcUpdateTest
+    {
+        IUpdate<Topic> update => g.odbc.Update<Topic>();
+
+        [Table(Name = "tb_topic")]
+        class Topic
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int? Clicks { get; set; }
+            public int TypeGuid { get; set; }
+            public TestTypeInfo Type { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+
+        [Fact]
+        public void Dywhere()
+        {
+            Assert.Null(g.odbc.Update<Topic>().ToSql());
+            Assert.Equal("UPDATE [tb_topic] SET title='test' \r\nWHERE ([Id] = 1 OR [Id] = 2)", g.odbc.Update<Topic>(new[] { 1, 2 }).SetRaw("title='test'").ToSql());
+            Assert.Equal("UPDATE [tb_topic] SET title='test1' \r\nWHERE ([Id] = 1)", g.odbc.Update<Topic>(new Topic { Id = 1, Title = "test" }).SetRaw("title='test1'").ToSql());
+            Assert.Equal("UPDATE [tb_topic] SET title='test1' \r\nWHERE ([Id] = 1 OR [Id] = 2)", g.odbc.Update<Topic>(new[] { new Topic { Id = 1, Title = "test" }, new Topic { Id = 2, Title = "test" } }).SetRaw("title='test1'").ToSql());
+            Assert.Equal("UPDATE [tb_topic] SET title='test1' \r\nWHERE ([Id] = 1)", g.odbc.Update<Topic>(new { id = 1 }).SetRaw("title='test1'").ToSql());
+        }
+
+        [Fact]
+        public void SetSource()
+        {
+            var sql = update.SetSource(new Topic { Id = 1, Title = "newtitle" }).IgnoreColumns(a => a.TypeGuid).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET [Clicks] = NULL, [Title] = N'newtitle', [CreateTime] = '1970-01-01 00:00:00' WHERE ([Id] = 1)", sql);
+
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100 });
+            items[0].Clicks = null;
+
+            sql = update.SetSource(items).IgnoreColumns(a => a.TypeGuid).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET [Clicks] = CASE [Id] WHEN 1 THEN NULL WHEN 2 THEN 100 WHEN 3 THEN 200 WHEN 4 THEN 300 WHEN 5 THEN 400 WHEN 6 THEN 500 WHEN 7 THEN 600 WHEN 8 THEN 700 WHEN 9 THEN 800 WHEN 10 THEN 900 END, [Title] = CASE [Id] WHEN 1 THEN N'newtitle0' WHEN 2 THEN N'newtitle1' WHEN 3 THEN N'newtitle2' WHEN 4 THEN N'newtitle3' WHEN 5 THEN N'newtitle4' WHEN 6 THEN N'newtitle5' WHEN 7 THEN N'newtitle6' WHEN 8 THEN N'newtitle7' WHEN 9 THEN N'newtitle8' WHEN 10 THEN N'newtitle9' END, [CreateTime] = CASE [Id] WHEN 1 THEN '1970-01-01 00:00:00' WHEN 2 THEN '1970-01-01 00:00:00' WHEN 3 THEN '1970-01-01 00:00:00' WHEN 4 THEN '1970-01-01 00:00:00' WHEN 5 THEN '1970-01-01 00:00:00' WHEN 6 THEN '1970-01-01 00:00:00' WHEN 7 THEN '1970-01-01 00:00:00' WHEN 8 THEN '1970-01-01 00:00:00' WHEN 9 THEN '1970-01-01 00:00:00' WHEN 10 THEN '1970-01-01 00:00:00' END WHERE ([Id] IN (1,2,3,4,5,6,7,8,9,10))", sql);
+
+            sql = update.SetSource(items).IgnoreColumns(a => new { a.Clicks, a.CreateTime, a.TypeGuid }).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET [Title] = CASE [Id] WHEN 1 THEN N'newtitle0' WHEN 2 THEN N'newtitle1' WHEN 3 THEN N'newtitle2' WHEN 4 THEN N'newtitle3' WHEN 5 THEN N'newtitle4' WHEN 6 THEN N'newtitle5' WHEN 7 THEN N'newtitle6' WHEN 8 THEN N'newtitle7' WHEN 9 THEN N'newtitle8' WHEN 10 THEN N'newtitle9' END WHERE ([Id] IN (1,2,3,4,5,6,7,8,9,10))", sql);
+
+            sql = update.SetSource(items).IgnoreColumns(a => a.TypeGuid).Set(a => a.CreateTime, new DateTime(2020, 1, 1)).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET [CreateTime] = '2020-01-01 00:00:00' WHERE ([Id] IN (1,2,3,4,5,6,7,8,9,10))", sql);
+        }
+        [Fact]
+        public void IgnoreColumns()
+        {
+            var sql = update.SetSource(new Topic { Id = 1, Title = "newtitle" }).IgnoreColumns(a => new { a.Clicks, a.CreateTime, a.TypeGuid }).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET [Title] = N'newtitle' WHERE ([Id] = 1)", sql);
+        }
+        [Fact]
+        public void UpdateColumns()
+        {
+            var sql = update.SetSource(new Topic { Id = 1, Title = "newtitle" }).UpdateColumns(a => a.Title).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET [Title] = N'newtitle' WHERE ([Id] = 1)", sql);
+        }
+        [Fact]
+        public void Set()
+        {
+            var sql = update.Where(a => a.Id == 1).Set(a => a.Title, "newtitle").ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET [Title] = N'newtitle' WHERE ([Id] = 1)", sql);
+
+            sql = update.Where(a => a.Id == 1).Set(a => a.Title, "newtitle").Set(a => a.CreateTime, new DateTime(2020, 1, 1)).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET [Title] = N'newtitle', [CreateTime] = '2020-01-01 00:00:00' WHERE ([Id] = 1)", sql);
+
+            sql = update.Set(a => a.Clicks * 10 / 1).Where(a => a.Id == 1).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET [Clicks] = isnull([Clicks], 0) * 10 / 1 WHERE ([Id] = 1)", sql);
+
+            sql = update.Set(a => a.Id - 10).Where(a => a.Id == 1).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET [Id] = ([Id] - 10) WHERE ([Id] = 1)", sql);
+
+            int incrv = 10;
+            sql = update.Set(a => a.Clicks * incrv / 1).Where(a => a.Id == 1).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET [Clicks] = isnull([Clicks], 0) * 10 / 1 WHERE ([Id] = 1)", sql);
+
+            sql = update.Set(a => a.Id - incrv).Where(a => a.Id == 1).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET [Id] = ([Id] - 10) WHERE ([Id] = 1)", sql);
+
+            sql = update.Set(a => a.Clicks == a.Clicks * 10 / 1).Where(a => a.Id == 1).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET [Clicks] = [Clicks] * 10 / 1 WHERE ([Id] = 1)", sql);
+
+            sql = update.Set(a => a.Id == 10).Where(a => a.Id == 1).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET [Id] = 10 WHERE ([Id] = 1)", sql);
+        }
+        [Fact]
+        public void SetRaw()
+        {
+            var sql = update.Where(a => a.Id == 1).SetRaw("clicks = clicks + ?", new { incrClick = 1 }).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET clicks = clicks + ? WHERE ([Id] = 1)", sql);
+        }
+        [Fact]
+        public void Where()
+        {
+            var sql = update.Where(a => a.Id == 1).SetRaw("title='newtitle'").ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET title='newtitle' WHERE ([Id] = 1)", sql);
+
+            sql = update.Where("id = ?", new { id = 1 }).SetRaw("title='newtitle'").ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET title='newtitle' WHERE (id = ?)", sql);
+
+            var item = new Topic { Id = 1, Title = "newtitle" };
+            sql = update.Where(item).SetRaw("title='newtitle'").ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET title='newtitle' WHERE ([Id] = 1)", sql);
+
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100 });
+            sql = update.Where(items).SetRaw("title='newtitle'").ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE [tb_topic] SET title='newtitle' WHERE ([Id] IN (1,2,3,4,5,6,7,8,9,10))", sql);
+        }
+        [Fact]
+        public void WhereExists()
+        {
+
+        }
+        [Fact]
+        public void ExecuteAffrows()
+        {
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100 });
+
+            var time = DateTime.Now;
+            var items222 = g.odbc.Select<Topic>().Where(a => a.CreateTime > time).Limit(10).ToList();
+
+            update.SetSource(items.First()).NoneParameter().ExecuteAffrows();
+            update.SetSource(items).NoneParameter().ExecuteAffrows();
+        }
+
+        [Fact]
+        public void AsTable()
+        {
+            Assert.Null(g.odbc.Update<Topic>().ToSql());
+            Assert.Equal("UPDATE [tb_topicAsTable] SET title='test' \r\nWHERE ([Id] = 1 OR [Id] = 2)", g.odbc.Update<Topic>(new[] { 1, 2 }).SetRaw("title='test'").AsTable(a => "tb_topicAsTable").ToSql());
+            Assert.Equal("UPDATE [tb_topicAsTable] SET title='test1' \r\nWHERE ([Id] = 1)", g.odbc.Update<Topic>(new Topic { Id = 1, Title = "test" }).SetRaw("title='test1'").AsTable(a => "tb_topicAsTable").ToSql());
+            Assert.Equal("UPDATE [tb_topicAsTable] SET title='test1' \r\nWHERE ([Id] = 1 OR [Id] = 2)", g.odbc.Update<Topic>(new[] { new Topic { Id = 1, Title = "test" }, new Topic { Id = 2, Title = "test" } }).SetRaw("title='test1'").AsTable(a => "tb_topicAsTable").ToSql());
+            Assert.Equal("UPDATE [tb_topicAsTable] SET title='test1' \r\nWHERE ([Id] = 1)", g.odbc.Update<Topic>(new { id = 1 }).SetRaw("title='test1'").AsTable(a => "tb_topicAsTable").ToSql());
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/MapType/EnumTest.cs

@@ -0,0 +1,263 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Numerics;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.DefaultMapType
+{
+    public class EnumTest
+    {
+
+        class EnumTestMap
+        {
+            public Guid id { get; set; }
+
+            [Column(MapType = typeof(string))]
+            public ToStringMapEnum enum_to_string { get; set; }
+            [Column(MapType = typeof(string))]
+            public ToStringMapEnum? enumnullable_to_string { get; set; }
+
+            [Column(MapType = typeof(int))]
+            public ToStringMapEnum enum_to_int { get; set; }
+            [Column(MapType = typeof(int?))]
+            public ToStringMapEnum? enumnullable_to_int { get; set; }
+        }
+        public enum ToStringMapEnum { 中国人, abc, 香港 }
+
+        [Fact]
+        public void EnumToString()
+        {
+            //insert
+            var orm = g.odbc;
+            var item = new EnumTestMap { };
+            Assert.Equal(1, orm.Insert<EnumTestMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.中国人).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_string, find.enum_to_string);
+            Assert.Equal(ToStringMapEnum.中国人, find.enum_to_string);
+
+            item = new EnumTestMap { enum_to_string = ToStringMapEnum.abc };
+            Assert.Equal(1, orm.Insert<EnumTestMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.abc).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_string, find.enum_to_string);
+            Assert.Equal(ToStringMapEnum.abc, find.enum_to_string);
+
+            //update all
+            item.enum_to_string = ToStringMapEnum.香港;
+            Assert.Equal(1, orm.Update<EnumTestMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.香港).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_string, find.enum_to_string);
+            Assert.Equal(ToStringMapEnum.香港, find.enum_to_string);
+
+            item.enum_to_string = ToStringMapEnum.中国人;
+            Assert.Equal(1, orm.Update<EnumTestMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.中国人).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_string, find.enum_to_string);
+            Assert.Equal(ToStringMapEnum.中国人, find.enum_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<EnumTestMap>().Where(a => a.id == item.id).Set(a => a.enum_to_string, ToStringMapEnum.香港).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.香港).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(ToStringMapEnum.香港, find.enum_to_string);
+
+            Assert.Equal(1, orm.Update<EnumTestMap>().Where(a => a.id == item.id).Set(a => a.enum_to_string, ToStringMapEnum.abc).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.abc).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(ToStringMapEnum.abc, find.enum_to_string);
+
+            //delete
+            Assert.Equal(0, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.中国人).ExecuteAffrows());
+            Assert.Equal(0, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.香港).ExecuteAffrows());
+            Assert.Equal(1, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.abc).ExecuteAffrows());
+            Assert.Null(orm.Select<EnumTestMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void EnumNullableToString()
+        {
+            //insert
+            var orm = g.odbc;
+            var item = new EnumTestMap { };
+            Assert.Equal(1, orm.Insert<EnumTestMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_string, find.enumnullable_to_string);
+            Assert.Null(find.enumnullable_to_string);
+
+            item = new EnumTestMap { enumnullable_to_string = ToStringMapEnum.中国人 };
+            Assert.Equal(1, orm.Insert<EnumTestMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.中国人).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_string, find.enumnullable_to_string);
+            Assert.Equal(ToStringMapEnum.中国人, find.enumnullable_to_string);
+
+            //update all
+            item.enumnullable_to_string = ToStringMapEnum.香港;
+            Assert.Equal(1, orm.Update<EnumTestMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.香港).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_string, find.enumnullable_to_string);
+            Assert.Equal(ToStringMapEnum.香港, find.enumnullable_to_string);
+
+            item.enumnullable_to_string = null;
+            Assert.Equal(1, orm.Update<EnumTestMap>().SetSource(item).ExecuteAffrows());
+            Assert.Null(orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.香港).First());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_string, find.enumnullable_to_string);
+            Assert.Null(find.enumnullable_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<EnumTestMap>().Where(a => a.id == item.id).Set(a => a.enumnullable_to_string, ToStringMapEnum.abc).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.abc).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(ToStringMapEnum.abc, find.enumnullable_to_string);
+
+
+            Assert.Equal(1, orm.Update<EnumTestMap>().Where(a => a.id == item.id).Set(a => a.enumnullable_to_string, null).ExecuteAffrows());
+            Assert.Null(orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.abc).First());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Null(find.enumnullable_to_string);
+
+            //delete
+            Assert.Equal(0, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.中国人).ExecuteAffrows());
+            Assert.Equal(0, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.香港).ExecuteAffrows());
+            Assert.Equal(1, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == null).ExecuteAffrows());
+            Assert.Null(orm.Select<EnumTestMap>().Where(a => a.id == item.id).First());
+        }
+
+        [Fact]
+        public void EnumToInt()
+        {
+            //insert
+            var orm = g.odbc;
+            var item = new EnumTestMap { };
+            Assert.Equal(1, orm.Insert<EnumTestMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_int == ToStringMapEnum.中国人).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_int, find.enum_to_int);
+            Assert.Equal(ToStringMapEnum.中国人, find.enum_to_int);
+
+            item = new EnumTestMap { enum_to_int = ToStringMapEnum.abc };
+            Assert.Equal(1, orm.Insert<EnumTestMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_int == ToStringMapEnum.abc).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_int, find.enum_to_int);
+            Assert.Equal(ToStringMapEnum.abc, find.enum_to_int);
+
+            //update all
+            item.enum_to_int = ToStringMapEnum.香港;
+            Assert.Equal(1, orm.Update<EnumTestMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_int == ToStringMapEnum.香港).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_int, find.enum_to_int);
+            Assert.Equal(ToStringMapEnum.香港, find.enum_to_int);
+
+            item.enum_to_int = ToStringMapEnum.中国人;
+            Assert.Equal(1, orm.Update<EnumTestMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_int == ToStringMapEnum.中国人).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_int, find.enum_to_int);
+            Assert.Equal(ToStringMapEnum.中国人, find.enum_to_int);
+
+            //update set
+            Assert.Equal(1, orm.Update<EnumTestMap>().Where(a => a.id == item.id).Set(a => a.enum_to_int, ToStringMapEnum.香港).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_int == ToStringMapEnum.香港).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(ToStringMapEnum.香港, find.enum_to_int);
+
+            Assert.Equal(1, orm.Update<EnumTestMap>().Where(a => a.id == item.id).Set(a => a.enum_to_int, ToStringMapEnum.abc).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_int == ToStringMapEnum.abc).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(ToStringMapEnum.abc, find.enum_to_int);
+
+            //delete
+            Assert.Equal(0, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_int == ToStringMapEnum.中国人).ExecuteAffrows());
+            Assert.Equal(0, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_int == ToStringMapEnum.香港).ExecuteAffrows());
+            Assert.Equal(1, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_int == ToStringMapEnum.abc).ExecuteAffrows());
+            Assert.Null(orm.Select<EnumTestMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void EnumNullableToInt()
+        {
+            //insert
+            var orm = g.odbc;
+            var item = new EnumTestMap { };
+            Assert.Equal(1, orm.Insert<EnumTestMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_int, find.enumnullable_to_int);
+            Assert.Null(find.enumnullable_to_int);
+
+            item = new EnumTestMap { enumnullable_to_int = ToStringMapEnum.中国人 };
+            Assert.Equal(1, orm.Insert<EnumTestMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == ToStringMapEnum.中国人).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_int, find.enumnullable_to_int);
+            Assert.Equal(ToStringMapEnum.中国人, find.enumnullable_to_int);
+
+            //update all
+            item.enumnullable_to_int = ToStringMapEnum.香港;
+            Assert.Equal(1, orm.Update<EnumTestMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == ToStringMapEnum.香港).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_int, find.enumnullable_to_int);
+            Assert.Equal(ToStringMapEnum.香港, find.enumnullable_to_int);
+
+            item.enumnullable_to_int = null;
+            Assert.Equal(1, orm.Update<EnumTestMap>().SetSource(item).ExecuteAffrows());
+            Assert.Null(orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == ToStringMapEnum.香港).First());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_int, find.enumnullable_to_int);
+            Assert.Null(find.enumnullable_to_int);
+
+            //update set
+            Assert.Equal(1, orm.Update<EnumTestMap>().Where(a => a.id == item.id).Set(a => a.enumnullable_to_int, ToStringMapEnum.abc).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == ToStringMapEnum.abc).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(ToStringMapEnum.abc, find.enumnullable_to_int);
+
+
+            Assert.Equal(1, orm.Update<EnumTestMap>().Where(a => a.id == item.id).Set(a => a.enumnullable_to_int, null).ExecuteAffrows());
+            Assert.Null(orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == ToStringMapEnum.abc).First());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Null(find.enumnullable_to_int);
+
+            //delete
+            Assert.Equal(0, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == ToStringMapEnum.中国人).ExecuteAffrows());
+            Assert.Equal(0, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == ToStringMapEnum.香港).ExecuteAffrows());
+            Assert.Equal(1, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == null).ExecuteAffrows());
+            Assert.Null(orm.Select<EnumTestMap>().Where(a => a.id == item.id).First());
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/MapType/ToStringTest.cs

@@ -0,0 +1,570 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Numerics;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.DefaultMapType
+{
+    public class ToStringTest
+    {
+        class ToStringMap
+        {
+            public Guid id { get; set; }
+
+            [Column(MapType = typeof(string))]
+            public TimeSpan timespan_to_string { get; set; }
+            [Column(MapType = typeof(string))]
+            public TimeSpan? timespannullable_to_string { get; set; }
+
+            [Column(MapType = typeof(string))]
+            public DateTime datetime_to_string { get; set; }
+            [Column(MapType = typeof(string))]
+            public DateTime? datetimenullable_to_string { get; set; }
+
+            [Column(MapType = typeof(string))]
+            public Guid guid_to_string { get; set; }
+            [Column(MapType = typeof(string))]
+            public Guid? guidnullable_to_string { get; set; }
+
+            [Column(MapType = typeof(string))]
+            public ToStringMapEnum enum_to_string { get; set; }
+            [Column(MapType = typeof(string))]
+            public ToStringMapEnum? enumnullable_to_string { get; set; }
+
+            [Column(MapType = typeof(string))]
+            public BigInteger biginteger_to_string { get; set; }
+            [Column(MapType = typeof(string))]
+            public BigInteger? bigintegernullable_to_string { get; set; }
+        }
+        public enum ToStringMapEnum { 中国人, abc, 香港 }
+        [Fact]
+        public void Enum1()
+        {
+            //insert
+            var orm = g.odbc;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.中国人).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_string, find.enum_to_string);
+            Assert.Equal(ToStringMapEnum.中国人, find.enum_to_string);
+
+            item = new ToStringMap { enum_to_string = ToStringMapEnum.abc };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.abc).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_string, find.enum_to_string);
+            Assert.Equal(ToStringMapEnum.abc, find.enum_to_string);
+
+            //update all
+            item.enum_to_string = ToStringMapEnum.香港;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.香港).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_string, find.enum_to_string);
+            Assert.Equal(ToStringMapEnum.香港, find.enum_to_string);
+
+            item.enum_to_string = ToStringMapEnum.中国人;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.中国人).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_string, find.enum_to_string);
+            Assert.Equal(ToStringMapEnum.中国人, find.enum_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.enum_to_string, ToStringMapEnum.香港).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.香港).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(ToStringMapEnum.香港, find.enum_to_string);
+
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.enum_to_string, ToStringMapEnum.abc).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.abc).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(ToStringMapEnum.abc, find.enum_to_string);
+
+            //delete
+            Assert.Equal(0, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.中国人).ExecuteAffrows());
+            Assert.Equal(0, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.香港).ExecuteAffrows());
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.abc).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void EnumNullable()
+        {
+            //insert
+            var orm = g.odbc;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_string, find.enumnullable_to_string);
+            Assert.Null(find.enumnullable_to_string);
+
+            item = new ToStringMap { enumnullable_to_string = ToStringMapEnum.中国人 };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.中国人).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_string, find.enumnullable_to_string);
+            Assert.Equal(ToStringMapEnum.中国人, find.enumnullable_to_string);
+
+            //update all
+            item.enumnullable_to_string = ToStringMapEnum.香港;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.香港).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_string, find.enumnullable_to_string);
+            Assert.Equal(ToStringMapEnum.香港, find.enumnullable_to_string);
+
+            item.enumnullable_to_string = null;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.香港).First());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_string, find.enumnullable_to_string);
+            Assert.Null(find.enumnullable_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.enumnullable_to_string, ToStringMapEnum.abc).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.abc).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(ToStringMapEnum.abc, find.enumnullable_to_string);
+
+
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.enumnullable_to_string, null).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.abc).First());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Null(find.enumnullable_to_string);
+
+            //delete
+            Assert.Equal(0, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.中国人).ExecuteAffrows());
+            Assert.Equal(0, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.香港).ExecuteAffrows());
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == null).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void BigInteger1()
+        {
+            //insert
+            var orm = g.odbc;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.biginteger_to_string == 0).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.biginteger_to_string, find.biginteger_to_string);
+            Assert.Equal(0, find.biginteger_to_string);
+
+            item = new ToStringMap { biginteger_to_string = 100 };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.biginteger_to_string == 100).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.biginteger_to_string, find.biginteger_to_string);
+            Assert.Equal(100, find.biginteger_to_string);
+
+            //update all
+            item.biginteger_to_string = 200;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.biginteger_to_string == 200).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.biginteger_to_string, find.biginteger_to_string);
+            Assert.Equal(200, find.biginteger_to_string);
+
+            item.biginteger_to_string = 205;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.biginteger_to_string == 205).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.biginteger_to_string, find.biginteger_to_string);
+            Assert.Equal(205, find.biginteger_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.biginteger_to_string, 522).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.biginteger_to_string == 522).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(522, find.biginteger_to_string);
+
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.biginteger_to_string, 10005).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.biginteger_to_string == 10005).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(10005, find.biginteger_to_string);
+
+            //delete
+            Assert.Equal(0, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.biginteger_to_string == 522).ExecuteAffrows());
+            Assert.Equal(0, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.biginteger_to_string == 205).ExecuteAffrows());
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.biginteger_to_string == 10005).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void BigIntegerNullable()
+        {
+            //insert
+            var orm = g.odbc;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.bigintegernullable_to_string, find.bigintegernullable_to_string);
+            Assert.Null(find.bigintegernullable_to_string);
+
+            item = new ToStringMap { bigintegernullable_to_string = 101 };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == 101).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.bigintegernullable_to_string, find.bigintegernullable_to_string);
+            Assert.Equal(101, find.bigintegernullable_to_string);
+
+            //update all
+            item.bigintegernullable_to_string = 2004;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == 2004).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.bigintegernullable_to_string, find.bigintegernullable_to_string);
+            Assert.Equal(2004, find.bigintegernullable_to_string);
+
+            item.bigintegernullable_to_string = null;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == 2004).First());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.bigintegernullable_to_string, find.bigintegernullable_to_string);
+            Assert.Null(find.bigintegernullable_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.bigintegernullable_to_string, 998).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == 998).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(998, find.bigintegernullable_to_string);
+
+
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.bigintegernullable_to_string, null).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == 998).First());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Null(find.bigintegernullable_to_string);
+
+            //delete
+            Assert.Equal(0, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == 998).ExecuteAffrows());
+            Assert.Equal(0, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == 2004).ExecuteAffrows());
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == null).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void TimeSpan1()
+        {
+            //insert
+            var orm = g.odbc;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.timespan_to_string, find.timespan_to_string);
+            Assert.Equal(TimeSpan.Zero, find.timespan_to_string);
+
+            item = new ToStringMap { timespan_to_string = TimeSpan.FromDays(1) };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.timespan_to_string, find.timespan_to_string);
+            Assert.Equal(TimeSpan.FromDays(1), find.timespan_to_string);
+
+            //update all
+            item.timespan_to_string = TimeSpan.FromHours(10);
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.timespan_to_string, find.timespan_to_string);
+            Assert.Equal(TimeSpan.FromHours(10), find.timespan_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.timespan_to_string, TimeSpan.FromHours(11)).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(TimeSpan.FromHours(11), find.timespan_to_string);
+
+            //delete
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void TimeSpanNullable()
+        {
+            //insert
+            var orm = g.odbc;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.timespannullable_to_string, find.timespannullable_to_string);
+            Assert.Null(find.timespannullable_to_string);
+
+            item = new ToStringMap { timespannullable_to_string = TimeSpan.FromDays(1) };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.timespannullable_to_string, find.timespannullable_to_string);
+            Assert.Equal(TimeSpan.FromDays(1), find.timespannullable_to_string);
+
+            //update all
+            item.timespannullable_to_string = TimeSpan.FromHours(10);
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.timespannullable_to_string, find.timespannullable_to_string);
+            Assert.Equal(TimeSpan.FromHours(10), find.timespannullable_to_string);
+
+            item.timespannullable_to_string = null;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.timespannullable_to_string, find.timespannullable_to_string);
+            Assert.Null(find.timespannullable_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.timespannullable_to_string, TimeSpan.FromHours(11)).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(TimeSpan.FromHours(11), find.timespannullable_to_string);
+
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.timespannullable_to_string, null).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Null(find.timespannullable_to_string);
+
+            //delete
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void DateTime1()
+        {
+            //insert
+            var orm = g.odbc;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.datetime_to_string, find.datetime_to_string);
+            Assert.Equal(DateTime.MinValue, find.datetime_to_string);
+
+            item = new ToStringMap { datetime_to_string = DateTime.Parse("2000-1-1") };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.datetime_to_string, find.datetime_to_string);
+            Assert.Equal(DateTime.Parse("2000-1-1"), find.datetime_to_string);
+
+            //update all
+            item.datetime_to_string = DateTime.Parse("2000-1-11");
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.datetime_to_string, find.datetime_to_string);
+            Assert.Equal(DateTime.Parse("2000-1-11"), find.datetime_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.datetime_to_string, DateTime.Parse("2000-1-12")).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(DateTime.Parse("2000-1-12"), find.datetime_to_string);
+
+            //delete
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void DateTimeNullable()
+        {
+            //insert
+            var orm = g.odbc;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.datetimenullable_to_string, find.datetimenullable_to_string);
+            Assert.Null(find.datetimenullable_to_string);
+
+            item = new ToStringMap { datetimenullable_to_string = DateTime.Parse("2000-1-1") };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.datetimenullable_to_string, find.datetimenullable_to_string);
+            Assert.Equal(DateTime.Parse("2000-1-1"), find.datetimenullable_to_string);
+
+            //update all
+            item.datetimenullable_to_string = DateTime.Parse("2000-1-11");
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.datetimenullable_to_string, find.datetimenullable_to_string);
+            Assert.Equal(DateTime.Parse("2000-1-11"), find.datetimenullable_to_string);
+
+            item.datetimenullable_to_string = null;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.datetimenullable_to_string, find.datetimenullable_to_string);
+            Assert.Null(find.datetimenullable_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.datetimenullable_to_string, DateTime.Parse("2000-1-12")).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(DateTime.Parse("2000-1-12"), find.datetimenullable_to_string);
+
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.datetimenullable_to_string, null).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Null(find.datetimenullable_to_string);
+
+            //delete
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+
+        [Fact]
+        public void Guid1()
+        {
+            //insert
+            var orm = g.odbc;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guid_to_string == Guid.Empty).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.guid_to_string, find.guid_to_string);
+            Assert.Equal(Guid.Empty, find.guid_to_string);
+
+            var newid = Guid.NewGuid();
+            item = new ToStringMap { guid_to_string = newid };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guid_to_string == newid).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.guid_to_string, find.guid_to_string);
+            Assert.Equal(newid, find.guid_to_string);
+
+            //update all
+            newid = Guid.NewGuid();
+            item.guid_to_string = newid;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guid_to_string == newid).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.guid_to_string, find.guid_to_string);
+            Assert.Equal(newid, find.guid_to_string);
+
+            //update set
+            newid = Guid.NewGuid();
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.guid_to_string, newid).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guid_to_string == newid).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(newid, find.guid_to_string);
+
+            //delete
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.guid_to_string == newid).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void GuidNullable()
+        {
+            //insert
+            var orm = g.odbc;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guidnullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.guidnullable_to_string, find.guidnullable_to_string);
+            Assert.Null(find.guidnullable_to_string);
+
+            var newid = Guid.NewGuid();
+            item = new ToStringMap { guidnullable_to_string = newid };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guidnullable_to_string == newid).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.guidnullable_to_string, find.guidnullable_to_string);
+            Assert.Equal(newid, find.guidnullable_to_string);
+
+            //update all
+            newid = Guid.NewGuid();
+            item.guidnullable_to_string = newid;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guidnullable_to_string == newid).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.guidnullable_to_string, find.guidnullable_to_string);
+            Assert.Equal(newid, find.guidnullable_to_string);
+
+            item.guidnullable_to_string = null;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guidnullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.guidnullable_to_string, find.guidnullable_to_string);
+            Assert.Null(find.guidnullable_to_string);
+
+            //update set
+            newid = Guid.NewGuid();
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.guidnullable_to_string, newid).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guidnullable_to_string == newid).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(newid, find.guidnullable_to_string);
+
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.guidnullable_to_string, null).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guidnullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Null(find.guidnullable_to_string);
+
+            //delete
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.guidnullable_to_string == null).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/OdbcAdo/OdbcAdoTest.cs

@@ -0,0 +1,93 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Data.Odbc;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.Default
+{
+    public class OdbcAdoTest
+    {
+        [Fact]
+        public void Pool()
+        {
+            var t1 = g.odbc.Ado.MasterPool.StatisticsFullily;
+        }
+
+        [Fact]
+        public void SlavePools()
+        {
+            var t2 = g.odbc.Ado.SlavePools.Count;
+        }
+
+        [Fact]
+        public void ExecuteReader()
+        {
+
+        }
+        [Fact]
+        public void ExecuteArray()
+        {
+
+        }
+        [Fact]
+        public void ExecuteNonQuery()
+        {
+
+        }
+        [Fact]
+        public void ExecuteScalar()
+        {
+
+        }
+
+        [Fact]
+        public void Query()
+        {
+
+            //var tt1 = g.odbc.Select<xxx>()
+            //	.LeftJoin(a => a.ParentId == a.Parent.Id)
+            //	.ToSql(a => new { a.Id, a.Title });
+
+            //var tt2result = g.odbc.Select<xxx>()
+            //	.LeftJoin(a => a.ParentId == a.Parent.Id)
+            //	.ToList(a => new { a.Id, a.Title });
+
+            //var tt = g.odbc.Select<xxx>()
+            //	.LeftJoin<xxx>((a, b) => b.Id == a.Id)
+            //	.ToSql(a => new { a.Id, a.Title });
+
+            //var ttresult = g.odbc.Select<xxx>()
+            //	.LeftJoin<xxx>((a, b) => b.Id == a.Id)
+            //	.ToList(a => new { a.Id, a.Title });
+
+            var tnsql1 = g.odbc.Select<xxx>().Where(a => a.Id > 0).Where(b => b.Title != null).Page(1, 3).ToSql(a => a.Id);
+
+            var tn1 = g.odbc.Select<xxx>().Where(a => a.Id > 0).Where(b => b.Title != null).Page(1, 3).ToList(a => a.Id);
+
+            var t3 = g.odbc.Ado.Query<xxx>("select * from xxx");
+
+            var t4 = g.odbc.Ado.Query<(int, int, string, string DateTime)>("select * from xxx");
+
+            var t5 = g.odbc.Ado.Query<dynamic>(System.Data.CommandType.Text, "select * from xxx where Id = ?",
+                new OdbcParameter("@Id", 1));
+        }
+
+        [Fact]
+        public void QueryMultipline()
+        {
+            var tnsql1 = g.odbc.Select<xxx>().Where(a => a.Id > 0).Where(b => b.Title != null).Page(1, 3).ToSql(a => a.Id);
+
+            var t3 = g.odbc.Ado.Query<xxx, (int, string, string), dynamic>("select * from xxx; select * from xxx; select * from xxx");
+        }
+
+        class xxx
+        {
+            public int Id { get; set; }
+            public int ParentId { get; set; }
+            public xxx Parent { get; set; }
+            public string Title { get; set; }
+            public string Url { get; set; }
+            public DateTime Create_time { get; set; }
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/OdbcAopTest.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Collections.Generic;
+using System.Reflection;
+using System.Text;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.Default
+{
+    public class OdbcAopTest
+    {
+
+        class TestAuditValue
+        {
+            public Guid id { get; set; }
+            [Now]
+            public DateTime createtime { get; set; }
+        }
+        class NowAttribute: Attribute { }
+
+        [Fact]
+        public void AuditValue()
+        {
+            var date = DateTime.Now.Date;
+            var item = new TestAuditValue();
+
+            EventHandler<Aop.AuditValueEventArgs> audit = (s, e) =>
+             {
+                 if (e.Property.GetCustomAttribute<NowAttribute>(false) != null)
+                     e.Value = DateTime.Now.Date;
+             };
+            g.odbc.Aop.AuditValue += audit;
+
+            g.odbc.Insert(item).ExecuteAffrows();
+
+            g.odbc.Aop.AuditValue -= audit;
+
+            Assert.Equal(item.createtime, date);
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/OdbcCodeFirstTest.cs

@@ -0,0 +1,148 @@
+using FreeSql.DataAnnotations;
+using Newtonsoft.Json;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.Default
+{
+
+    public class OdbcCodeFirstTest
+    {
+        [Fact]
+        public void 中文表_字段()
+        {
+            var item = new 测试中文表
+            {
+                标题 = "测试标题",
+                创建时间 = DateTime.Now
+            };
+            Assert.Equal(1, g.odbc.Insert<测试中文表>().AppendData(item).ExecuteAffrows());
+            Assert.NotEqual(Guid.Empty, item.编号);
+            var item2 = g.odbc.Select<测试中文表>().Where(a => a.编号 == item.编号).First();
+            Assert.NotNull(item2);
+            Assert.Equal(item.编号, item2.编号);
+            Assert.Equal(item.标题, item2.标题);
+        }
+        class 测试中文表
+        {
+            [Column(IsPrimary = true)]
+            public Guid 编号 { get; set; }
+
+            public string 标题 { get; set; }
+
+            public DateTime 创建时间 { get; set; }
+        }
+
+        IInsert<tb_alltype_notime> insert => g.odbc.Insert<tb_alltype_notime>();
+        ISelect<tb_alltype_notime> select => g.odbc.Select<tb_alltype_notime>();
+
+        [Fact]
+        public void CurdAllField()
+        {
+            var item = new tb_alltype_notime { };
+            item.Id = (int)insert.AppendData(item).ExecuteIdentity();
+
+            var newitem = select.Where(a => a.Id == item.Id).ToOne();
+
+            var item2 = new tb_alltype_notime
+            {
+                testFieldBool = true,
+                testFieldBoolNullable = true,
+                testFieldByte = byte.MaxValue,
+                testFieldByteNullable = byte.MinValue,
+                testFieldBytes = Encoding.UTF8.GetBytes("我是中国人"),
+                testFieldDateTime = DateTime.Now,
+                testFieldDateTimeNullable = DateTime.Now.AddHours(1),
+                testFieldDecimal = 998.99M,
+                testFieldDecimalNullable = 999.12M,
+                testFieldDouble = 99.199,
+                testFieldDoubleNullable = 99.211,
+                testFieldEnum1 = TableAllTypeEnumType1.e2,
+                testFieldEnum1Nullable = TableAllTypeEnumType1.e3,
+                testFieldEnum2 = TableAllTypeEnumType2.f3,
+                testFieldEnum2Nullable = TableAllTypeEnumType2.f2,
+                testFieldFloat = 0.99F,
+                testFieldFloatNullable = 0.11F,
+                testFieldGuid = Guid.NewGuid(),
+                testFieldGuidNullable = Guid.NewGuid(),
+                testFieldInt = int.MaxValue,
+                testFieldIntNullable = int.MinValue,
+                testFieldLong = long.MaxValue,
+                testFieldSByte = sbyte.MaxValue,
+                testFieldSByteNullable = sbyte.MinValue,
+                testFieldShort = short.MaxValue,
+                testFieldShortNullable = short.MinValue,
+                testFieldString = "我是中国人string",
+                testFieldUInt = uint.MaxValue,
+                testFieldUIntNullable = uint.MinValue,
+                testFieldULong = ulong.MaxValue,
+                testFieldULongNullable = ulong.MinValue,
+                testFieldUShort = ushort.MaxValue,
+                testFieldUShortNullable = ushort.MinValue,
+                testFielLongNullable = long.MinValue
+            };
+
+            var sqlPar = insert.AppendData(item2).ToSql();
+            var sqlText = insert.AppendData(item2).NoneParameter().ToSql();
+            item2.Id = (int)insert.AppendData(item2).NoneParameter().ExecuteIdentity();
+
+            var sqlTestUpdate = g.odbc.Update<tb_alltype_notime>().SetSource(item2).NoneParameter().ToSql();
+
+            var item3 = insert.AppendData(item2).ExecuteIdentity();
+            var newitem2 = select.Where(a => a.Id == item2.Id).ToOne();
+
+            var items = select.ToList();
+        }
+
+        [Table(Name = "tb_alltype_notime")]
+        class tb_alltype_notime
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+
+            [Column(Name = "testFieldBool1111")]
+            public bool testFieldBool { get; set; }
+            public sbyte testFieldSByte { get; set; }
+            public short testFieldShort { get; set; }
+            public int testFieldInt { get; set; }
+            public long testFieldLong { get; set; }
+            public byte testFieldByte { get; set; }
+            public ushort testFieldUShort { get; set; }
+            public uint testFieldUInt { get; set; }
+            public ulong testFieldULong { get; set; }
+            public double testFieldDouble { get; set; }
+            public float testFieldFloat { get; set; }
+            public decimal testFieldDecimal { get; set; }
+            public DateTime testFieldDateTime { get; set; }
+            public byte[] testFieldBytes { get; set; }
+            public string testFieldString { get; set; }
+            public Guid testFieldGuid { get; set; }
+
+            public bool? testFieldBoolNullable { get; set; }
+            public sbyte? testFieldSByteNullable { get; set; }
+            public short? testFieldShortNullable { get; set; }
+            public int? testFieldIntNullable { get; set; }
+            public long? testFielLongNullable { get; set; }
+            public byte? testFieldByteNullable { get; set; }
+            public ushort? testFieldUShortNullable { get; set; }
+            public uint? testFieldUIntNullable { get; set; }
+            public ulong? testFieldULongNullable { get; set; }
+            public double? testFieldDoubleNullable { get; set; }
+            public float? testFieldFloatNullable { get; set; }
+            public decimal? testFieldDecimalNullable { get; set; }
+            public DateTime? testFieldDateTimeNullable { get; set; }
+            public Guid? testFieldGuidNullable { get; set; }
+
+            public TableAllTypeEnumType1 testFieldEnum1 { get; set; }
+            public TableAllTypeEnumType1? testFieldEnum1Nullable { get; set; }
+            public TableAllTypeEnumType2 testFieldEnum2 { get; set; }
+            public TableAllTypeEnumType2? testFieldEnum2Nullable { get; set; }
+        }
+
+        public enum TableAllTypeEnumType1 { e1, e2, e3, e5 }
+        [Flags] public enum TableAllTypeEnumType2 { f1, f2, f3 }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/OdbcExpression/ConvertTest.cs

@@ -0,0 +1,168 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.DefaultExpression
+{
+    public class ConvertTest
+    {
+        ISelect<Topic> select => g.odbc.Select<Topic>();
+
+        [Table(Name = "tb_topic")]
+        class Topic
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int Clicks { get; set; }
+            public int TypeGuid { get; set; }
+            public TestTypeInfo Type { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+        class TestTypeInfo
+        {
+            public int Guid { get; set; }
+            public int ParentId { get; set; }
+            public TestTypeParentInfo Parent { get; set; }
+            public string Name { get; set; }
+        }
+        class TestTypeParentInfo
+        {
+            public int Id { get; set; }
+            public string Name { get; set; }
+
+            public List<TestTypeInfo> Types { get; set; }
+        }
+
+        [Fact]
+        public void ToBoolean()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => (Convert.ToBoolean(a.Clicks) ? 1 : 0) > 0).ToList());
+            data.Add(select.Where(a => (bool.Parse(a.Clicks.ToString()) ? 1 : 0) > 0).ToList());
+        }
+        [Fact]
+        public void ToByte()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToByte(a.Clicks % 255) > 0).ToList());
+            data.Add(select.Where(a => byte.Parse((a.Clicks % 255).ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void ToChar()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToChar(a.Clicks) == '1').ToList());
+            data.Add(select.Where(a => char.Parse(a.Clicks.ToString()) == '1').ToList());
+        }
+        [Fact]
+        public void ToDateTime()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToDateTime(a.CreateTime.ToString()).Year > 0).ToList());
+            data.Add(select.Where(a => DateTime.Parse(a.CreateTime.ToString()).Year > 0).ToList());
+        }
+        [Fact]
+        public void ToDecimal()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToDecimal(a.Clicks) > 0).ToList());
+            data.Add(select.Where(a => decimal.Parse(a.Clicks.ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void ToDouble()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToDouble(a.Clicks) > 0).ToList());
+            data.Add(select.Where(a => double.Parse(a.Clicks.ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void ToInt16()
+        {
+            var data = new List<object>();
+            //data.Add(select.Where(a => Convert.ToInt16(a.Clicks) > 0).ToList());
+            //data.Add(select.Where(a => short.Parse(a.Clicks.ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void ToInt32()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => (int)a.Clicks > 0).ToList());
+            data.Add(select.Where(a => Convert.ToInt32(a.Clicks) > 0).ToList());
+            data.Add(select.Where(a => int.Parse(a.Clicks.ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void ToInt64()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToInt64(a.Clicks) > 0).ToList());
+            data.Add(select.Where(a => long.Parse(a.Clicks.ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void ToSByte()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToSByte(a.Clicks % 128) > 0).ToList());
+            data.Add(select.Where(a => sbyte.Parse((a.Clicks % 128).ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void ToSingle()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToSingle(a.Clicks) > 0).ToList());
+            data.Add(select.Where(a => float.Parse(a.Clicks.ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void this_ToString()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToString(a.Clicks).Equals("")).ToList());
+            data.Add(select.Where(a => a.Clicks.ToString().Equals("")).ToList());
+        }
+        [Fact]
+        public void ToUInt16()
+        {
+            var data = new List<object>();
+            //data.Add(select.Where(a => Convert.ToUInt16(a.Clicks) > 0).ToList());
+            //data.Add(select.Where(a => ushort.Parse(a.Clicks.ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void ToUInt32()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToUInt32(a.Clicks) > 0).ToList());
+            data.Add(select.Where(a => uint.Parse(a.Clicks.ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void ToUInt64()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToUInt64(a.Clicks) > 0).ToList());
+            data.Add(select.Where(a => ulong.Parse(a.Clicks.ToString()) > 0).ToList());
+        }
+
+        [Fact]
+        public void Guid_Parse()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Guid.Parse(Guid.NewGuid().ToString()) == Guid.Empty).ToList());
+        }
+
+        [Fact]
+        public void Guid_NewGuid()
+        {
+            var data = new List<object>();
+            data.Add(select.OrderBy(a => Guid.NewGuid()).Limit(10).ToList());
+        }
+
+        [Fact]
+        public void Random()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => new Random().Next() > a.Clicks).Limit(10).ToList());
+            data.Add(select.Where(a => new Random().NextDouble() > a.Clicks).Limit(10).ToList());
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/OdbcExpression/DateTimeTest.cs

@@ -0,0 +1,321 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.DefaultExpression
+{
+    public class DateTimeTest
+    {
+        ISelect<Topic> select => g.odbc.Select<Topic>();
+
+        [Table(Name = "tb_topic111333")]
+        class Topic
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int Clicks { get; set; }
+            public int TypeGuid { get; set; }
+            public TestTypeInfo Type { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+        [Table(Name = "TestTypeInfo333")]
+        class TestTypeInfo
+        {
+            [Column(IsIdentity = true)]
+            public int Guid { get; set; }
+            public int ParentId { get; set; }
+            public TestTypeParentInfo Parent { get; set; }
+            public string Name { get; set; }
+            public DateTime Time { get; set; }
+        }
+        [Table(Name = "TestTypeParentInfo23123")]
+        class TestTypeParentInfo
+        {
+            public int Id { get; set; }
+            public string Name { get; set; }
+
+            public List<TestTypeInfo> Types { get; set; }
+            public DateTime Time2 { get; set; }
+        }
+        [Fact]
+        public void Now()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Date == DateTime.Now.Date).ToList());
+        }
+        [Fact]
+        public void UtcNow()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Date == DateTime.UtcNow.Date).ToList());
+        }
+        [Fact]
+        public void MinValue()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Date == DateTime.MinValue.Date).ToList());
+        }
+        [Fact]
+        public void MaxValue()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Date == DateTime.MaxValue.Date).ToList());
+        }
+        [Fact]
+        public void Date()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Date == DateTime.Now.Date).ToList());
+            data.Add(select.Where(a => a.Type.Time.Date > DateTime.Now.Date).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Date > DateTime.Now.Date).ToList());
+
+            data.Add(select.Where(a => DateTime.Now.Subtract(a.CreateTime.Date).TotalSeconds > 0).ToList());
+            data.Add(select.Where(a => DateTime.Now.Subtract(a.Type.Time.Date).TotalSeconds > 0).ToList());
+            data.Add(select.Where(a => DateTime.Now.Subtract(a.Type.Parent.Time2.Date).TotalSeconds > 0).ToList());
+        }
+        [Fact]
+        public void TimeOfDay()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay == DateTime.Now.TimeOfDay).ToList());
+            data.Add(select.Where(a => a.Type.Time.TimeOfDay > DateTime.Now.TimeOfDay).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.TimeOfDay > DateTime.Now.TimeOfDay).ToList());
+        }
+        [Fact]
+        public void DayOfWeek()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.DayOfWeek > DateTime.Now.DayOfWeek).ToList());
+            data.Add(select.Where(a => a.Type.Time.DayOfWeek > DateTime.Now.DayOfWeek).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.DayOfWeek > DateTime.Now.DayOfWeek).ToList());
+        }
+        [Fact]
+        public void Day()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Day > DateTime.Now.Day).ToList());
+            data.Add(select.Where(a => a.Type.Time.Day > DateTime.Now.Day).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Day > DateTime.Now.Day).ToList());
+        }
+        [Fact]
+        public void DayOfYear()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.DayOfYear > DateTime.Now.DayOfYear).ToList());
+            data.Add(select.Where(a => a.Type.Time.DayOfYear > DateTime.Now.DayOfYear).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.DayOfYear > DateTime.Now.DayOfYear).ToList());
+        }
+        [Fact]
+        public void Month()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Month > DateTime.Now.Month).ToList());
+            data.Add(select.Where(a => a.Type.Time.Month > DateTime.Now.Month).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Month > DateTime.Now.Month).ToList());
+        }
+        [Fact]
+        public void Year()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Year > DateTime.Now.Year).ToList());
+            data.Add(select.Where(a => a.Type.Time.Year > DateTime.Now.Year).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Year > DateTime.Now.Year).ToList());
+        }
+        [Fact]
+        public void Hour()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Hour > DateTime.Now.Hour).ToList());
+            data.Add(select.Where(a => a.Type.Time.Hour > DateTime.Now.Hour).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Hour > DateTime.Now.Hour).ToList());
+        }
+        [Fact]
+        public void Minute()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Minute > DateTime.Now.Minute).ToList());
+            data.Add(select.Where(a => a.Type.Time.Minute > DateTime.Now.Minute).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Minute > DateTime.Now.Minute).ToList());
+        }
+        [Fact]
+        public void Second()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Second > DateTime.Now.Second).ToList());
+            data.Add(select.Where(a => a.Type.Time.Second > DateTime.Now.Second).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Second > DateTime.Now.Second).ToList());
+        }
+        [Fact]
+        public void Millisecond()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Millisecond > DateTime.Now.Millisecond).ToList());
+            data.Add(select.Where(a => a.Type.Time.Millisecond > DateTime.Now.Millisecond).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Millisecond > DateTime.Now.Millisecond).ToList());
+        }
+        [Fact]
+        public void Ticks()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Ticks > DateTime.Now.Ticks).ToList());
+            data.Add(select.Where(a => a.Type.Time.Ticks > DateTime.Now.Ticks).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Ticks > DateTime.Now.Ticks).ToList());
+        }
+        [Fact]
+        public void Add()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Add(TimeSpan.FromDays(1)) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Time.Add(TimeSpan.FromDays(1)) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Add(TimeSpan.FromDays(1)) > DateTime.Now).ToList());
+        }
+        [Fact]
+        public void AddDays()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.AddDays(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddDays(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddDays(1) > DateTime.Now).ToList());
+        }
+        [Fact]
+        public void AddHours()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.AddHours(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddHours(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddHours(1) > DateTime.Now).ToList());
+        }
+        [Fact]
+        public void AddMilliseconds()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.AddMilliseconds(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddMilliseconds(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddMilliseconds(1) > DateTime.Now).ToList());
+        }
+        [Fact]
+        public void AddMinutes()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.AddMinutes(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddMinutes(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddMinutes(1) > DateTime.Now).ToList());
+        }
+        [Fact]
+        public void AddMonths()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.AddMonths(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddMonths(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddMonths(1) > DateTime.Now).ToList());
+        }
+        [Fact]
+        public void AddSeconds()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.AddSeconds(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddSeconds(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddSeconds(1) > DateTime.Now).ToList());
+        }
+        [Fact]
+        public void AddTicks()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.AddTicks(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddTicks(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddTicks(1) > DateTime.Now).ToList());
+        }
+        [Fact]
+        public void AddYears()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.AddYears(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddYears(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddYears(1) > DateTime.Now).ToList());
+        }
+        [Fact]
+        public void Subtract()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Subtract(DateTime.Now).TotalSeconds > 0).ToList());
+            data.Add(select.Where(a => a.Type.Time.Subtract(DateTime.Now).TotalSeconds > 0).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Subtract(DateTime.Now).TotalSeconds > 0).ToList());
+
+            data.Add(select.Where(a => a.CreateTime.Subtract(TimeSpan.FromDays(1)) > a.CreateTime).ToList());
+            data.Add(select.Where(a => a.Type.Time.Subtract(TimeSpan.FromDays(1)) > a.CreateTime).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Subtract(TimeSpan.FromDays(1)) > a.CreateTime).ToList());
+        }
+        [Fact]
+        public void 两个日期相减_效果同Subtract()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => (a.CreateTime - DateTime.Now).TotalSeconds > 0).ToList());
+            data.Add(select.Where(a => (a.Type.Time - DateTime.Now).TotalSeconds > 0).ToList());
+            data.Add(select.Where(a => (a.Type.Parent.Time2 - DateTime.Now).TotalSeconds > 0).ToList());
+
+            data.Add(select.Where(a => (a.CreateTime - TimeSpan.FromDays(1)) > a.CreateTime).ToList());
+            data.Add(select.Where(a => (a.Type.Time - TimeSpan.FromDays(1)) > a.CreateTime).ToList());
+            data.Add(select.Where(a => (a.Type.Parent.Time2 - TimeSpan.FromDays(1)) > a.CreateTime).ToList());
+        }
+        [Fact]
+        public void this_Equals()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.AddYears(1).Equals(DateTime.Now)).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddYears(1).Equals(DateTime.Now)).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddYears(1).Equals(DateTime.Now)).ToList());
+        }
+        [Fact]
+        public void this_ToString()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.ToString().Equals(DateTime.Now)).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddYears(1).ToString().Equals(DateTime.Now)).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddYears(1).ToString().Equals(DateTime.Now)).ToList());
+        }
+
+        [Fact]
+        public void DateTime_Compare()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.CompareTo(DateTime.Now) == 0).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddYears(1).CompareTo(DateTime.Now) == 0).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddYears(1).CompareTo(DateTime.Now) == 0).ToList());
+        }
+        [Fact]
+        public void DateTime_DaysInMonth()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => DateTime.DaysInMonth(a.CreateTime.Year, a.CreateTime.Month) > 30).ToList());
+            data.Add(select.Where(a => DateTime.DaysInMonth(a.Type.Time.Year, a.Type.Time.Month) > 30).ToList());
+            data.Add(select.Where(a => DateTime.DaysInMonth(a.Type.Parent.Time2.Year, a.Type.Parent.Time2.Month) > 30).ToList());
+        }
+        [Fact]
+        public void DateTime_Equals()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => DateTime.Equals(a.CreateTime.AddYears(1), DateTime.Now)).ToList());
+            data.Add(select.Where(a => DateTime.Equals(a.Type.Time.AddYears(1), DateTime.Now)).ToList());
+            data.Add(select.Where(a => DateTime.Equals(a.Type.Parent.Time2.AddYears(1), DateTime.Now)).ToList());
+        }
+        [Fact]
+        public void DateTime_IsLeapYear()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => DateTime.IsLeapYear(a.CreateTime.Year)).ToList());
+            data.Add(select.Where(a => DateTime.IsLeapYear(a.Type.Time.AddYears(1).Year)).ToList());
+            data.Add(select.Where(a => DateTime.IsLeapYear(a.Type.Parent.Time2.AddYears(1).Year)).ToList());
+        }
+        [Fact]
+        public void DateTime_Parse()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => DateTime.Parse(a.CreateTime.ToString()) > DateTime.Now).ToList());
+            data.Add(select.Where(a => DateTime.Parse(a.Type.Time.AddYears(1).ToString()) > DateTime.Now).ToList());
+            data.Add(select.Where(a => DateTime.Parse(a.Type.Parent.Time2.AddYears(1).ToString()) > DateTime.Now).ToList());
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/OdbcExpression/MathTest.cs

@@ -0,0 +1,155 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.DefaultExpression
+{
+    public class MathTest
+    {
+        ISelect<Topic> select => g.odbc.Select<Topic>();
+
+        [Table(Name = "tb_topic")]
+        class Topic
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int Clicks { get; set; }
+            public int TypeGuid { get; set; }
+            public TestTypeInfo Type { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+        class TestTypeInfo
+        {
+            public int Guid { get; set; }
+            public int ParentId { get; set; }
+            public TestTypeParentInfo Parent { get; set; }
+            public string Name { get; set; }
+        }
+        class TestTypeParentInfo
+        {
+            public int Id { get; set; }
+            public string Name { get; set; }
+
+            public List<TestTypeInfo> Types { get; set; }
+        }
+
+        [Fact]
+        public void PI()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.PI + a.Clicks > 0).ToList());
+        }
+        [Fact]
+        public void Abs()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Abs(-a.Clicks) > 0).ToList());
+        }
+        [Fact]
+        public void Sign()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Sign(-a.Clicks) > 0).ToList());
+        }
+        [Fact]
+        public void Floor()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Floor(a.Clicks + 0.5) == a.Clicks).ToList());
+        }
+        [Fact]
+        public void Ceiling()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Ceiling(a.Clicks + 0.5) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Round()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Round(a.Clicks + 0.5) == a.Clicks).ToList());
+            data.Add(select.Where(a => Math.Round(a.Clicks + 0.5, 1) > a.Clicks).ToList());
+        }
+        [Fact]
+        public void Exp()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Exp(1) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Log()
+        {
+            //var data = new List<object>();
+            //data.Add(select.Where(a => Math.Log(a.Clicks + 0.5) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Log10()
+        {
+            //var data = new List<object>();
+            //data.Add(select.Where(a => Math.Log10(a.Clicks + 0.5) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Pow()
+        {
+            var data = new List<object>();
+            //data.Add(select.Where(a => Math.Pow(2, a.Clicks) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Sqrt()
+        {
+            var data = new List<object>();
+            //data.Add(select.Where(a => Math.Sqrt(Math.Pow(2, a.Clicks)) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Cos()
+        {
+            var data = new List<object>();
+            //data.Add(select.Where(a => Math.Cos(Math.Pow(2, a.Clicks)) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Sin()
+        {
+            var data = new List<object>();
+            //data.Add(select.Where(a => Math.Sin(Math.Pow(2, a.Clicks)) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Tan()
+        {
+            var data = new List<object>();
+            //data.Add(select.Where(a => Math.Tan(Math.Pow(2, a.Clicks)) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Acos()
+        {
+            var data = new List<object>();
+            //data.Add(select.Where(a => Math.Acos(Math.Pow(2, a.Clicks)) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Asin()
+        {
+            var data = new List<object>();
+            //data.Add(select.Where(a => Math.Asin(Math.Pow(2, a.Clicks)) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Atan()
+        {
+            var data = new List<object>();
+            //data.Add(select.Where(a => Math.Atan(Math.Pow(2, a.Clicks)) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Atan2()
+        {
+            var data = new List<object>();
+            //data.Add(select.Where(a => Math.Atan2(2, a.Clicks) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Truncate()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Truncate(a.Clicks * 1.0 / 3) == a.Clicks + 1).ToList());
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/OdbcExpression/OtherTest.cs

@@ -0,0 +1,129 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.DefaultExpression
+{
+    public class OtherTest
+    {
+
+        ISelect<TableAllType> select => g.odbc.Select<TableAllType>();
+
+        [Fact]
+        public void Div()
+        {
+            var t1 = select.Where(a => a.testFieldInt / 3 > 3).Limit(10).ToList();
+            var t2 = select.Where(a => a.testFieldLong / 3 > 3).Limit(10).ToList();
+            var t3 = select.Where(a => a.testFieldShort / 3 > 3).Limit(10).ToList();
+
+            var t4 = select.Where(a => a.testFieldInt / 3.0 > 3).Limit(10).ToList();
+            var t5 = select.Where(a => a.testFieldLong / 3.0 > 3).Limit(10).ToList();
+            var t6 = select.Where(a => a.testFieldShort / 3.0 > 3).Limit(10).ToList();
+
+            var t7 = select.Where(a => a.testFieldDouble / 3 > 3).Limit(10).ToList();
+            var t8 = select.Where(a => a.testFieldDecimal / 3 > 3).Limit(10).ToList();
+            var t9 = select.Where(a => a.testFieldFloat / 3 > 3).Limit(10).ToList();
+        }
+
+        [Fact]
+        public void Boolean()
+        {
+            var t1 = select.Where(a => a.testFieldBool == true).ToList();
+            var t2 = select.Where(a => a.testFieldBool != true).ToList();
+            var t3 = select.Where(a => a.testFieldBool == false).ToList();
+            var t4 = select.Where(a => !a.testFieldBool).ToList();
+            var t5 = select.Where(a => a.testFieldBool).ToList();
+
+            var t11 = select.Where(a => a.testFieldBoolNullable == true).ToList();
+            var t22 = select.Where(a => a.testFieldBoolNullable != true).ToList();
+            var t33 = select.Where(a => a.testFieldBoolNullable == false).ToList();
+            var t44 = select.Where(a => !a.testFieldBoolNullable.Value).ToList();
+            var t55 = select.Where(a => a.testFieldBoolNullable.Value).ToList();
+        }
+
+        [Fact]
+        public void Array()
+        {
+            IEnumerable<int> testlinqlist = new List<int>(new[] { 1, 2, 3 });
+            var testlinq = select.Where(a => testlinqlist.Contains(a.testFieldInt)).ToList();
+
+            //in not in
+            var sql111 = select.Where(a => new[] { 1, 2, 3 }.Contains(a.testFieldInt)).ToList();
+            var sql112 = select.Where(a => new[] { 1, 2, 3 }.Contains(a.testFieldInt) == false).ToList();
+            var sql113 = select.Where(a => !new[] { 1, 2, 3 }.Contains(a.testFieldInt)).ToList();
+
+            var inarray = new[] { 1, 2, 3 };
+            var sql1111 = select.Where(a => inarray.Contains(a.testFieldInt)).ToList();
+            var sql1122 = select.Where(a => inarray.Contains(a.testFieldInt) == false).ToList();
+            var sql1133 = select.Where(a => !inarray.Contains(a.testFieldInt)).ToList();
+
+            //in not in
+            var sql11111 = select.Where(a => new List<int>() { 1, 2, 3 }.Contains(a.testFieldInt)).ToList();
+            var sql11222 = select.Where(a => new List<int>() { 1, 2, 3 }.Contains(a.testFieldInt) == false).ToList();
+            var sql11333 = select.Where(a => !new List<int>() { 1, 2, 3 }.Contains(a.testFieldInt)).ToList();
+
+            var sql11111a = select.Where(a => new List<int>(new[] { 1, 2, 3 }).Contains(a.testFieldInt)).ToList();
+            var sql11222b = select.Where(a => new List<int>(new[] { 1, 2, 3 }).Contains(a.testFieldInt) == false).ToList();
+            var sql11333c = select.Where(a => !new List<int>(new[] { 1, 2, 3 }).Contains(a.testFieldInt)).ToList();
+
+            var inarray2 = new List<int>() { 1, 2, 3 };
+            var sql111111 = select.Where(a => inarray.Contains(a.testFieldInt)).ToList();
+            var sql112222 = select.Where(a => inarray.Contains(a.testFieldInt) == false).ToList();
+            var sql113333 = select.Where(a => !inarray.Contains(a.testFieldInt)).ToList();
+        }
+
+        [Table(Name = "tb_alltype")]
+        class TableAllType
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+
+            [Column(Name = "testFieldBool1111")]
+            public bool testFieldBool { get; set; }
+            public sbyte testFieldSByte { get; set; }
+            public short testFieldShort { get; set; }
+            public int testFieldInt { get; set; }
+            public long testFieldLong { get; set; }
+            public byte testFieldByte { get; set; }
+            public ushort testFieldUShort { get; set; }
+            public uint testFieldUInt { get; set; }
+            public ulong testFieldULong { get; set; }
+            public double testFieldDouble { get; set; }
+            public float testFieldFloat { get; set; }
+            public decimal testFieldDecimal { get; set; }
+            public TimeSpan testFieldTimeSpan { get; set; }
+            public DateTime testFieldDateTime { get; set; }
+            public DateTimeOffset testFieldDateTimeOffset { get; set; }
+            public byte[] testFieldBytes { get; set; }
+            public string testFieldString { get; set; }
+            public Guid testFieldGuid { get; set; }
+
+            public bool? testFieldBoolNullable { get; set; }
+            public sbyte? testFieldSByteNullable { get; set; }
+            public short? testFieldShortNullable { get; set; }
+            public int? testFieldIntNullable { get; set; }
+            public long? testFielLongNullable { get; set; }
+            public byte? testFieldByteNullable { get; set; }
+            public ushort? testFieldUShortNullable { get; set; }
+            public uint? testFieldUIntNullable { get; set; }
+            public ulong? testFieldULongNullable { get; set; }
+            public double? testFieldDoubleNullable { get; set; }
+            public float? testFieldFloatNullable { get; set; }
+            public decimal? testFieldDecimalNullable { get; set; }
+            public TimeSpan? testFieldTimeSpanNullable { get; set; }
+            public DateTime? testFieldDateTimeNullable { get; set; }
+            public DateTimeOffset? testFieldDateTimeNullableOffset { get; set; }
+            public Guid? testFieldGuidNullable { get; set; }
+
+            public TableAllTypeEnumType1 testFieldEnum1 { get; set; }
+            public TableAllTypeEnumType1? testFieldEnum1Nullable { get; set; }
+            public TableAllTypeEnumType2 testFieldEnum2 { get; set; }
+            public TableAllTypeEnumType2? testFieldEnum2Nullable { get; set; }
+        }
+
+        public enum TableAllTypeEnumType1 { e1, e2, e3, e5 }
+        [Flags] public enum TableAllTypeEnumType2 { f1, f2, f3 }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/OdbcExpression/StringTest.cs

@@ -0,0 +1,289 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.DefaultExpression
+{
+    public class StringTest
+    {
+
+        ISelect<Topic> select => g.odbc.Select<Topic>();
+
+        [Table(Name = "tb_topic")]
+        class Topic
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int Clicks { get; set; }
+            public int TypeGuid { get; set; }
+            public TestTypeInfo Type { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+        class TestTypeInfo
+        {
+            [Column(IsIdentity = true)]
+            public int Guid { get; set; }
+            public int ParentId { get; set; }
+            public TestTypeParentInfo Parent { get; set; }
+            public string Name { get; set; }
+        }
+        class TestTypeParentInfo
+        {
+            public int Id { get; set; }
+            public string Name { get; set; }
+
+            public List<TestTypeInfo> Types { get; set; }
+        }
+        class TestEqualsGuid
+        {
+            public Guid id { get; set; }
+        }
+
+        [Fact]
+        public void Equals__()
+        {
+            var list = new List<object>();
+            list.Add(select.Where(a => a.Title.Equals("aaa")).ToList());
+            list.Add(g.odbc.Select<TestEqualsGuid>().Where(a => a.id.Equals(Guid.Empty)).ToList());
+        }
+
+        [Fact]
+        public void Empty()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => (a.Title ?? "") == string.Empty).ToSql());
+        }
+
+        [Fact]
+        public void StartsWith()
+        {
+            var list = new List<object>();
+            list.Add(select.Where(a => a.Title.StartsWith("aaa")).ToList());
+            list.Add(select.Where(a => a.Title.StartsWith(a.Title)).ToList());
+            list.Add(select.Where(a => a.Title.StartsWith(a.Title + 1)).ToList());
+            list.Add(select.Where(a => a.Title.StartsWith(a.Type.Name)).ToList());
+
+            list.Add(select.Where(a => (a.Title + "aaa").StartsWith("aaa")).ToList());
+            list.Add(select.Where(a => (a.Title + "aaa").StartsWith(a.Title)).ToList());
+            list.Add(select.Where(a => (a.Title + "aaa").StartsWith(a.Title + 1)).ToList());
+            list.Add(select.Where(a => (a.Title + "aaa").StartsWith(a.Type.Name)).ToList());
+        }
+        [Fact]
+        public void EndsWith()
+        {
+            var list = new List<object>();
+            list.Add(select.Where(a => a.Title.EndsWith("aaa")).ToList());
+            list.Add(select.Where(a => a.Title.EndsWith(a.Title)).ToList());
+            list.Add(select.Where(a => a.Title.EndsWith(a.Title + 1)).ToList());
+            list.Add(select.Where(a => a.Title.EndsWith(a.Type.Name)).ToList());
+
+            list.Add(select.Where(a => (a.Title + "aaa").EndsWith("aaa")).ToList());
+            list.Add(select.Where(a => (a.Title + "aaa").EndsWith(a.Title)).ToList());
+            list.Add(select.Where(a => (a.Title + "aaa").EndsWith(a.Title + 1)).ToList());
+            list.Add(select.Where(a => (a.Title + "aaa").EndsWith(a.Type.Name)).ToList());
+        }
+        [Fact]
+        public void Contains()
+        {
+            var list = new List<object>();
+            list.Add(select.Where(a => a.Title.Contains("aaa")).ToList());
+            list.Add(select.Where(a => a.Title.Contains(a.Title)).ToList());
+            list.Add(select.Where(a => a.Title.Contains(a.Title + 1)).ToList());
+            list.Add(select.Where(a => a.Title.Contains(a.Type.Name)).ToList());
+
+            list.Add(select.Where(a => (a.Title + "aaa").Contains("aaa")).ToList());
+            list.Add(select.Where(a => (a.Title + "aaa").Contains(a.Title)).ToList());
+            list.Add(select.Where(a => (a.Title + "aaa").Contains(a.Title + 1)).ToList());
+            list.Add(select.Where(a => (a.Title + "aaa").Contains(a.Type.Name)).ToList());
+        }
+        [Fact]
+        public void ToLower()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.ToLower() == "aaa").ToList());
+            data.Add(select.Where(a => a.Title.ToLower() == a.Title).ToList());
+            data.Add(select.Where(a => a.Title.ToLower() == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => a.Title.ToLower() == a.Type.Name).ToList());
+
+            data.Add(select.Where(a => (a.Title.ToLower() + "aaa").ToLower() == "aaa").ToList());
+            data.Add(select.Where(a => (a.Title.ToLower() + "aaa").ToLower() == a.Title).ToList());
+            data.Add(select.Where(a => (a.Title.ToLower() + "aaa").ToLower() == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => (a.Title.ToLower() + "aaa").ToLower() == a.Type.Name).ToList());
+        }
+        [Fact]
+        public void ToUpper()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.ToUpper() == "aaa").ToList());
+            data.Add(select.Where(a => a.Title.ToUpper() == a.Title).ToList());
+            data.Add(select.Where(a => a.Title.ToUpper() == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => a.Title.ToUpper() == a.Type.Name).ToList());
+
+            data.Add(select.Where(a => (a.Title.ToUpper() + "aaa").ToUpper() == "aaa").ToList());
+            data.Add(select.Where(a => (a.Title.ToUpper() + "aaa").ToUpper() == a.Title).ToList());
+            data.Add(select.Where(a => (a.Title.ToUpper() + "aaa").ToUpper() == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => (a.Title.ToUpper() + "aaa").ToUpper() == a.Type.Name).ToList());
+        }
+        [Fact]
+        public void Substring()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.Substring(0) == "aaa").ToList());
+            data.Add(select.Where(a => a.Title.Substring(0) == a.Title).ToList());
+            data.Add(select.Where(a => a.Title.Substring(0) == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => a.Title.Substring(0) == a.Type.Name).ToList());
+
+            data.Add(select.Where(a => (a.Title.Substring(0) + "aaa").Substring(a.Title.Length) == "aaa").ToList());
+            data.Add(select.Where(a => (a.Title.Substring(0) + "aaa").Substring(0, a.Title.Length) == a.Title).ToList());
+            data.Add(select.Where(a => (a.Title.Substring(0) + "aaa").Substring(0, 3) == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => (a.Title.Substring(0) + "aaa").Substring(1, 2) == a.Type.Name).ToList());
+        }
+        [Fact]
+        public void Length()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.Length == 0).ToList());
+            data.Add(select.Where(a => a.Title.Length == 1).ToList());
+            data.Add(select.Where(a => a.Title.Length == a.Title.Length + 1).ToList());
+            data.Add(select.Where(a => a.Title.Length == a.Type.Name.Length).ToList());
+
+            data.Add(select.Where(a => (a.Title + "aaa").Length == 0).ToList());
+            data.Add(select.Where(a => (a.Title + "aaa").Length == 1).ToList());
+            data.Add(select.Where(a => (a.Title + "aaa").Length == a.Title.Length + 1).ToList());
+            data.Add(select.Where(a => (a.Title + "aaa").Length == a.Type.Name.Length).ToList());
+        }
+        [Fact]
+        public void IndexOf()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.IndexOf("aaa") == -1).ToList());
+            data.Add(select.Where(a => a.Title.IndexOf("aaa", 2) == -1).ToList());
+            data.Add(select.Where(a => a.Title.IndexOf("aaa", 2) == (a.Title.Length + 1)).ToList());
+            data.Add(select.Where(a => a.Title.IndexOf("aaa", 2) == a.Type.Name.Length + 1).ToList());
+
+            data.Add(select.Where(a => (a.Title + "aaa").IndexOf("aaa") == -1).ToList());
+            data.Add(select.Where(a => (a.Title + "aaa").IndexOf("aaa", 2) == -1).ToList());
+            data.Add(select.Where(a => (a.Title + "aaa").IndexOf("aaa", 2) == (a.Title.Length + 1)).ToList());
+            data.Add(select.Where(a => (a.Title + "aaa").IndexOf("aaa", 2) == a.Type.Name.Length + 1).ToList());
+        }
+        [Fact]
+        public void PadLeft()
+        {
+            //var data = new List<object>();
+            //data.Add(select.Where(a => a.Title.PadLeft(10, 'a') == "aaa").ToList());
+            //data.Add(select.Where(a => a.Title.PadLeft(10, 'a') == a.Title).ToList());
+            //data.Add(select.Where(a => a.Title.PadLeft(10, 'a') == (a.Title + 1)).ToList());
+            //data.Add(select.Where(a => a.Title.PadLeft(10, 'a') == a.Type.Name).ToList());
+
+            //data.Add(select.Where(a => (a.Title.PadLeft(10, 'a') + "aaa").PadLeft(20, 'b') == "aaa").ToList());
+            //data.Add(select.Where(a => (a.Title.PadLeft(10, 'a') + "aaa").PadLeft(20, 'b') == a.Title).ToList());
+            //data.Add(select.Where(a => (a.Title.PadLeft(10, 'a') + "aaa").PadLeft(20, 'b') == (a.Title + 1)).ToList());
+            //data.Add(select.Where(a => (a.Title.PadLeft(10, 'a') + "aaa").PadLeft(20, 'b') == a.Type.Name).ToList());
+        }
+        [Fact]
+        public void PadRight()
+        {
+            //var data = new List<object>();
+            //data.Add(select.Where(a => a.Title.PadRight(10, 'a') == "aaa").ToList());
+            //data.Add(select.Where(a => a.Title.PadRight(10, 'a') == a.Title).ToList());
+            //data.Add(select.Where(a => a.Title.PadRight(10, 'a') == (a.Title + 1)).ToList());
+            //data.Add(select.Where(a => a.Title.PadRight(10, 'a') == a.Type.Name).ToList());
+
+            //data.Add(select.Where(a => (a.Title.PadRight(10, 'a') + "aaa").PadRight(20, 'b') == "aaa").ToList());
+            //data.Add(select.Where(a => (a.Title.PadRight(10, 'a') + "aaa").PadRight(20, 'b') == a.Title).ToList());
+            //data.Add(select.Where(a => (a.Title.PadRight(10, 'a') + "aaa").PadRight(20, 'b') == (a.Title + 1)).ToList());
+            //data.Add(select.Where(a => (a.Title.PadRight(10, 'a') + "aaa").PadRight(20, 'b') == a.Type.Name).ToList());
+        }
+        [Fact]
+        public void Trim()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.Trim() == "aaa").ToList());
+            data.Add(select.Where(a => a.Title.Trim('a') == a.Title).ToList());
+            data.Add(select.Where(a => a.Title.Trim('a', 'b') == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => a.Title.Trim('a', 'b', 'c') == a.Type.Name).ToList());
+
+            data.Add(select.Where(a => (a.Title.Trim() + "aaa").Trim() == "aaa").ToList());
+            data.Add(select.Where(a => (a.Title.Trim('a') + "aaa").Trim('a') == a.Title).ToList());
+            data.Add(select.Where(a => (a.Title.Trim('a', 'b') + "aaa").Trim('a', 'b') == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => (a.Title.Trim('a', 'b', 'c') + "aaa").Trim('a', 'b', 'c') == a.Type.Name).ToList());
+        }
+        [Fact]
+        public void TrimStart()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.TrimStart() == "aaa").ToList());
+            data.Add(select.Where(a => a.Title.TrimStart('a') == a.Title).ToList());
+            data.Add(select.Where(a => a.Title.TrimStart('a', 'b') == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => a.Title.TrimStart('a', 'b', 'c') == a.Type.Name).ToList());
+
+            data.Add(select.Where(a => (a.Title.TrimStart() + "aaa").TrimStart() == "aaa").ToList());
+            data.Add(select.Where(a => (a.Title.TrimStart('a') + "aaa").TrimStart('a') == a.Title).ToList());
+            data.Add(select.Where(a => (a.Title.TrimStart('a', 'b') + "aaa").TrimStart('a', 'b') == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => (a.Title.TrimStart('a', 'b', 'c') + "aaa").TrimStart('a', 'b', 'c') == a.Type.Name).ToList());
+        }
+        [Fact]
+        public void TrimEnd()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.TrimEnd() == "aaa").ToList());
+            data.Add(select.Where(a => a.Title.TrimEnd('a') == a.Title).ToList());
+            data.Add(select.Where(a => a.Title.TrimEnd('a', 'b') == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => a.Title.TrimEnd('a', 'b', 'c') == a.Type.Name).ToList());
+
+            data.Add(select.Where(a => (a.Title.TrimEnd() + "aaa").TrimEnd() == "aaa").ToList());
+            data.Add(select.Where(a => (a.Title.TrimEnd('a') + "aaa").TrimEnd('a') == a.Title).ToList());
+            data.Add(select.Where(a => (a.Title.TrimEnd('a', 'b') + "aaa").TrimEnd('a', 'b') == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => (a.Title.TrimEnd('a', 'b', 'c') + "aaa").TrimEnd('a', 'b', 'c') == a.Type.Name).ToList());
+        }
+        [Fact]
+        public void Replace()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.Replace("a", "b") == "aaa").ToList());
+            data.Add(select.Where(a => a.Title.Replace("a", "b").Replace("b", "c") == a.Title).ToList());
+            data.Add(select.Where(a => a.Title.Replace("a", "b").Replace("b", "c").Replace("c", "a") == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => a.Title.Replace("a", "b").Replace("b", "c").Replace(a.Type.Name, "a") == a.Type.Name).ToList());
+
+            data.Add(select.Where(a => (a.Title.Replace("a", "b") + "aaa").TrimEnd() == "aaa").ToList());
+            data.Add(select.Where(a => (a.Title.Replace("a", "b").Replace("b", "c") + "aaa").TrimEnd('a') == a.Title).ToList());
+            data.Add(select.Where(a => (a.Title.Replace("a", "b").Replace("b", "c").Replace("c", "a") + "aaa").TrimEnd('a', 'b') == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => (a.Title.Replace("a", "b").Replace("b", "c").Replace(a.Type.Name, "a") + "aaa").TrimEnd('a', 'b', 'c') == a.Type.Name).ToList());
+        }
+        [Fact]
+        public void CompareTo()
+        {
+            //var data = new List<object>();
+            //data.Add(select.Where(a => a.Title.CompareTo(a.Title) == 0).ToList());
+            //data.Add(select.Where(a => a.Title.CompareTo(a.Title) > 0).ToList());
+            //data.Add(select.Where(a => a.Title.CompareTo(a.Title + 1) == 0).ToList());
+            //data.Add(select.Where(a => a.Title.CompareTo(a.Title + a.Type.Name) == 0).ToList());
+
+            //data.Add(select.Where(a => (a.Title + "aaa").CompareTo("aaa") == 0).ToList());
+            //data.Add(select.Where(a => (a.Title + "aaa").CompareTo(a.Title) > 0).ToList());
+            //data.Add(select.Where(a => (a.Title + "aaa").CompareTo(a.Title + 1) == 0).ToList());
+            //data.Add(select.Where(a => (a.Title + "aaa").CompareTo(a.Type.Name) == 0).ToList());
+        }
+
+        [Fact]
+        public void string_IsNullOrEmpty()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => string.IsNullOrEmpty(a.Title)).ToList());
+            //data.Add(select.Where(a => string.IsNullOrEmpty(a.Title) == false).ToList());
+            data.Add(select.Where(a => !string.IsNullOrEmpty(a.Title)).ToList());
+        }
+
+        [Fact]
+        public void string_IsNullOrWhiteSpace()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => string.IsNullOrWhiteSpace(a.Title)).ToList());
+            data.Add(select.Where(a => string.IsNullOrWhiteSpace(a.Title) == false).ToList());
+            data.Add(select.Where(a => !string.IsNullOrWhiteSpace(a.Title)).ToList());
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Default/OdbcExpression/TimeSpanTest.cs

@@ -0,0 +1,209 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.DefaultExpression
+{
+    public class TimeSpanTest
+    {
+
+        ISelect<Topic> select => g.odbc.Select<Topic>();
+
+        [Table(Name = "tb_topic")]
+        class Topic
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int Clicks { get; set; }
+            public int TypeGuid { get; set; }
+            public TestTypeInfo Type { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+        class TestTypeInfo
+        {
+            public int Guid { get; set; }
+            public int ParentId { get; set; }
+            public TestTypeParentInfo Parent { get; set; }
+            public string Name { get; set; }
+        }
+        class TestTypeParentInfo
+        {
+            public int Id { get; set; }
+            public string Name { get; set; }
+
+            public List<TestTypeInfo> Types { get; set; }
+        }
+        [Fact]
+        public void Zero()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay > TimeSpan.Zero).ToList());
+        }
+        [Fact]
+        public void MinValue()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay > TimeSpan.MinValue).ToList());
+        }
+        [Fact]
+        public void MaxValue()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay < TimeSpan.MaxValue).ToList());
+        }
+        [Fact]
+        public void Days()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.Days == 0).ToList());
+        }
+        [Fact]
+        public void Hours()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.Hours > 0).ToSql());
+        }
+        [Fact]
+        public void Milliseconds()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.Milliseconds > 0).ToList());
+        }
+        [Fact]
+        public void Minutes()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.Minutes > 0).ToList());
+        }
+        [Fact]
+        public void Seconds()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.Seconds > 0).ToList());
+        }
+        [Fact]
+        public void Ticks()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.Ticks > 0).ToList());
+        }
+        [Fact]
+        public void TotalDays()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.TotalDays > 0).ToList());
+        }
+        [Fact]
+        public void TotalHours()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.TotalHours > 0).ToList());
+        }
+        [Fact]
+        public void TotalMilliseconds()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.TotalMilliseconds > 0).ToList());
+        }
+        [Fact]
+        public void TotalMinutes()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.TotalMinutes > 0).ToSql());
+        }
+        [Fact]
+        public void TotalSeconds()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.TotalSeconds > 0).ToList());
+        }
+        [Fact]
+        public void Add()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.Add(TimeSpan.FromDays(1)) > TimeSpan.Zero).ToList());
+        }
+        [Fact]
+        public void Subtract()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.Subtract(TimeSpan.FromDays(1)) > TimeSpan.Zero).ToList());
+        }
+        [Fact]
+        public void CompareTo()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.CompareTo(TimeSpan.FromDays(1)) > 0).ToList());
+        }
+        [Fact]
+        public void this_Equals()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.Equals(TimeSpan.FromDays(1))).ToList());
+        }
+        [Fact]
+        public void this_ToString()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.ToString() == "ssss").ToList());
+        }
+
+        [Fact]
+        public void TimeSpan_Compare()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => TimeSpan.Compare(a.CreateTime.TimeOfDay, TimeSpan.FromDays(1)) > 0).ToList());
+        }
+        [Fact]
+        public void TimeSpan_Equals()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => TimeSpan.Equals(a.CreateTime.TimeOfDay, TimeSpan.FromDays(1))).ToList());
+        }
+        [Fact]
+        public void TimeSpan_FromDays()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => TimeSpan.Equals(a.CreateTime.TimeOfDay, TimeSpan.FromDays(1))).ToList());
+        }
+        [Fact]
+        public void TimeSpan_FromHours()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => TimeSpan.Equals(a.CreateTime.TimeOfDay, TimeSpan.FromHours(1))).ToList());
+        }
+        [Fact]
+        public void TimeSpan_FromMilliseconds()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => TimeSpan.Equals(a.CreateTime.TimeOfDay, TimeSpan.FromMilliseconds(1))).ToList());
+        }
+        [Fact]
+        public void TimeSpan_FromMinutes()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => TimeSpan.Equals(a.CreateTime.TimeOfDay, TimeSpan.FromMinutes(1))).ToList());
+        }
+        [Fact]
+        public void TimeSpan_FromSeconds()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => TimeSpan.Equals(a.CreateTime.TimeOfDay, TimeSpan.FromSeconds(1))).ToList());
+        }
+        [Fact]
+        public void TimeSpan_FromTicks()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => TimeSpan.Equals(a.CreateTime.TimeOfDay, TimeSpan.FromTicks(1))).ToList());
+        }
+        [Fact]
+        public void TimeSpan_Parse()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => TimeSpan.Parse(a.CreateTime.TimeOfDay.ToString()) > TimeSpan.Zero).ToList());
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/Curd/PostgreSQLDeleteTest.cs

@@ -0,0 +1,97 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.PostgreSQL
+{
+    public class PostgreSQLDeleteTest
+    {
+
+        IDelete<Topic> delete => g.pgsql.Delete<Topic>();
+
+        [Table(Name = "tb_topic_del")]
+        class Topic
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int Clicks { get; set; }
+            public TestTypeInfo Type { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+
+        [Fact]
+        public void Dywhere()
+        {
+            Assert.Null(g.pgsql.Delete<Topic>().ToSql());
+            var sql = g.pgsql.Delete<Topic>(new[] { 1, 2 }).ToSql();
+            Assert.Equal("DELETE FROM \"tb_topic_del\" WHERE (\"id\" = 1 OR \"id\" = 2)", sql);
+
+            sql = g.pgsql.Delete<Topic>(new Topic { Id = 1, Title = "test" }).ToSql();
+            Assert.Equal("DELETE FROM \"tb_topic_del\" WHERE (\"id\" = 1)", sql);
+
+            sql = g.pgsql.Delete<Topic>(new[] { new Topic { Id = 1, Title = "test" }, new Topic { Id = 2, Title = "test" } }).ToSql();
+            Assert.Equal("DELETE FROM \"tb_topic_del\" WHERE (\"id\" = 1 OR \"id\" = 2)", sql);
+
+            sql = g.pgsql.Delete<Topic>(new { id = 1 }).ToSql();
+            Assert.Equal("DELETE FROM \"tb_topic_del\" WHERE (\"id\" = 1)", sql);
+        }
+
+        [Fact]
+        public void Where()
+        {
+            var sql = delete.Where(a => a.Id == 1).ToSql().Replace("\r\n", "");
+            Assert.Equal("DELETE FROM \"tb_topic_del\" WHERE (\"id\" = 1)", sql);
+
+            sql = delete.Where("id = @id", new { id = 1 }).ToSql().Replace("\r\n", "");
+            Assert.Equal("DELETE FROM \"tb_topic_del\" WHERE (id = @id)", sql);
+
+            var item = new Topic { Id = 1, Title = "newtitle" };
+            sql = delete.Where(item).ToSql().Replace("\r\n", "");
+            Assert.Equal("DELETE FROM \"tb_topic_del\" WHERE (\"id\" = 1)", sql);
+
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100 });
+
+            sql = delete.Where(items).ToSql().Replace("\r\n", "");
+            Assert.Equal("DELETE FROM \"tb_topic_del\" WHERE (\"id\" IN (1,2,3,4,5,6,7,8,9,10))", sql);
+        }
+        [Fact]
+        public void WhereExists()
+        {
+
+        }
+        [Fact]
+        public void ExecuteAffrows()
+        {
+
+            var id = g.pgsql.Insert<Topic>(new Topic { Title = "xxxx" }).ExecuteIdentity();
+            Assert.Equal(1, delete.Where(a => a.Id == id).ExecuteAffrows());
+        }
+        [Fact]
+        public void ExecuteDeleted()
+        {
+
+            delete.Where(a => a.Id > 0).ExecuteDeleted();
+        }
+
+        [Fact]
+        public void AsTable()
+        {
+            Assert.Null(g.pgsql.Delete<Topic>().ToSql());
+            var sql = g.pgsql.Delete<Topic>(new[] { 1, 2 }).AsTable(a => "TopicAsTable").ToSql();
+            Assert.Equal("DELETE FROM \"topicastable\" WHERE (\"id\" = 1 OR \"id\" = 2)", sql);
+
+            sql = g.pgsql.Delete<Topic>(new Topic { Id = 1, Title = "test" }).AsTable(a => "TopicAsTable").ToSql();
+            Assert.Equal("DELETE FROM \"topicastable\" WHERE (\"id\" = 1)", sql);
+
+            sql = g.pgsql.Delete<Topic>(new[] { new Topic { Id = 1, Title = "test" }, new Topic { Id = 2, Title = "test" } }).AsTable(a => "TopicAsTable").ToSql();
+            Assert.Equal("DELETE FROM \"topicastable\" WHERE (\"id\" = 1 OR \"id\" = 2)", sql);
+
+            sql = g.pgsql.Delete<Topic>(new { id = 1 }).AsTable(a => "TopicAsTable").ToSql();
+            Assert.Equal("DELETE FROM \"topicastable\" WHERE (\"id\" = 1)", sql);
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/Curd/PostgreSQLInsertTest.cs

@@ -0,0 +1,141 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.PostgreSQL
+{
+    public class PostgreSQLInsertTest
+    {
+
+        IInsert<Topic> insert => g.pgsql.Insert<Topic>();
+
+        [Table(Name = "tb_topic_insert")]
+        class Topic
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int Clicks { get; set; }
+            public TestTypeInfo Type { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+
+        [Fact]
+        public void AppendData()
+        {
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100 });
+
+            var sql = insert.AppendData(items.First()).ToSql();
+            Assert.Equal("INSERT INTO \"tb_topic_insert\"(\"clicks\", \"title\", \"createtime\") VALUES(0, 'newtitle0', '0001-01-01 00:00:00.000000')", sql);
+
+            sql = insert.AppendData(items).ToSql();
+            Assert.Equal("INSERT INTO \"tb_topic_insert\"(\"clicks\", \"title\", \"createtime\") VALUES(0, 'newtitle0', '0001-01-01 00:00:00.000000'), (100, 'newtitle1', '0001-01-01 00:00:00.000000'), (200, 'newtitle2', '0001-01-01 00:00:00.000000'), (300, 'newtitle3', '0001-01-01 00:00:00.000000'), (400, 'newtitle4', '0001-01-01 00:00:00.000000'), (500, 'newtitle5', '0001-01-01 00:00:00.000000'), (600, 'newtitle6', '0001-01-01 00:00:00.000000'), (700, 'newtitle7', '0001-01-01 00:00:00.000000'), (800, 'newtitle8', '0001-01-01 00:00:00.000000'), (900, 'newtitle9', '0001-01-01 00:00:00.000000')", sql);
+
+            sql = insert.AppendData(items).InsertColumns(a => a.Title).ToSql();
+            Assert.Equal("INSERT INTO \"tb_topic_insert\"(\"title\") VALUES('newtitle0'), ('newtitle1'), ('newtitle2'), ('newtitle3'), ('newtitle4'), ('newtitle5'), ('newtitle6'), ('newtitle7'), ('newtitle8'), ('newtitle9')", sql);
+
+            sql = insert.AppendData(items).IgnoreColumns(a => a.CreateTime).ToSql();
+            Assert.Equal("INSERT INTO \"tb_topic_insert\"(\"clicks\", \"title\") VALUES(0, 'newtitle0'), (100, 'newtitle1'), (200, 'newtitle2'), (300, 'newtitle3'), (400, 'newtitle4'), (500, 'newtitle5'), (600, 'newtitle6'), (700, 'newtitle7'), (800, 'newtitle8'), (900, 'newtitle9')", sql);
+        }
+
+        [Fact]
+        public void InsertColumns()
+        {
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100 });
+
+            var sql = insert.AppendData(items).InsertColumns(a => a.Title).ToSql();
+            Assert.Equal("INSERT INTO \"tb_topic_insert\"(\"title\") VALUES('newtitle0'), ('newtitle1'), ('newtitle2'), ('newtitle3'), ('newtitle4'), ('newtitle5'), ('newtitle6'), ('newtitle7'), ('newtitle8'), ('newtitle9')", sql);
+
+            sql = insert.AppendData(items).InsertColumns(a => new { a.Title, a.Clicks }).ToSql();
+            Assert.Equal("INSERT INTO \"tb_topic_insert\"(\"clicks\", \"title\") VALUES(0, 'newtitle0'), (100, 'newtitle1'), (200, 'newtitle2'), (300, 'newtitle3'), (400, 'newtitle4'), (500, 'newtitle5'), (600, 'newtitle6'), (700, 'newtitle7'), (800, 'newtitle8'), (900, 'newtitle9')", sql);
+        }
+        [Fact]
+        public void IgnoreColumns()
+        {
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100 });
+
+            var sql = insert.AppendData(items).IgnoreColumns(a => a.CreateTime).ToSql();
+            Assert.Equal("INSERT INTO \"tb_topic_insert\"(\"clicks\", \"title\") VALUES(0, 'newtitle0'), (100, 'newtitle1'), (200, 'newtitle2'), (300, 'newtitle3'), (400, 'newtitle4'), (500, 'newtitle5'), (600, 'newtitle6'), (700, 'newtitle7'), (800, 'newtitle8'), (900, 'newtitle9')", sql);
+
+            sql = insert.AppendData(items).IgnoreColumns(a => new { a.Title, a.CreateTime }).ToSql();
+            Assert.Equal("INSERT INTO \"tb_topic_insert\"(\"clicks\") VALUES(0), (100), (200), (300), (400), (500), (600), (700), (800), (900)", sql);
+
+            g.pgsql.Delete<TopicIgnore>().Where("1=1").ExecuteAffrows();
+            var itemsIgnore = new List<TopicIgnore>();
+            for (var a = 0; a < 2072; a++) itemsIgnore.Add(new TopicIgnore { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100, CreateTime = DateTime.Now });
+            g.pgsql.Insert<TopicIgnore>().AppendData(itemsIgnore).IgnoreColumns(a => new { a.Title }).ExecuteAffrows();
+            Assert.Equal(2072, itemsIgnore.Count);
+            Assert.Equal(2072, g.pgsql.Select<TopicIgnore>().Where(a => a.Title == null).Count());
+        }
+        [Table(Name = "tb_topicIgnoreColumns")]
+        class TopicIgnore
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int Clicks { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+        [Fact]
+        public void ExecuteAffrows()
+        {
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100 });
+
+            Assert.Equal(1, insert.AppendData(items.First()).ExecuteAffrows());
+            Assert.Equal(10, insert.AppendData(items).ExecuteAffrows());
+        }
+        [Fact]
+        public void ExecuteIdentity()
+        {
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100 });
+
+            Assert.NotEqual(0, insert.AppendData(items.First()).ExecuteIdentity());
+        }
+        [Fact]
+        public void ExecuteInserted()
+        {
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100 });
+
+            insert.AppendData(items.First()).ExecuteInserted();
+        }
+
+        [Fact]
+        public void AsTable()
+        {
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newTitle{a}", Clicks = a * 100 });
+
+            var sql = insert.AppendData(items.First()).AsTable(a => "Topic_InsertAsTable").ToSql();
+            Assert.Equal("INSERT INTO \"topic_insertastable\"(\"clicks\", \"title\", \"createtime\") VALUES(0, 'newTitle0', '0001-01-01 00:00:00.000000')", sql);
+
+            sql = insert.AppendData(items).AsTable(a => "Topic_InsertAsTable").ToSql();
+            Assert.Equal("INSERT INTO \"topic_insertastable\"(\"clicks\", \"title\", \"createtime\") VALUES(0, 'newTitle0', '0001-01-01 00:00:00.000000'), (100, 'newTitle1', '0001-01-01 00:00:00.000000'), (200, 'newTitle2', '0001-01-01 00:00:00.000000'), (300, 'newTitle3', '0001-01-01 00:00:00.000000'), (400, 'newTitle4', '0001-01-01 00:00:00.000000'), (500, 'newTitle5', '0001-01-01 00:00:00.000000'), (600, 'newTitle6', '0001-01-01 00:00:00.000000'), (700, 'newTitle7', '0001-01-01 00:00:00.000000'), (800, 'newTitle8', '0001-01-01 00:00:00.000000'), (900, 'newTitle9', '0001-01-01 00:00:00.000000')", sql);
+
+            sql = insert.AppendData(items).InsertColumns(a => a.Title).AsTable(a => "Topic_InsertAsTable").ToSql();
+            Assert.Equal("INSERT INTO \"topic_insertastable\"(\"title\") VALUES('newTitle0'), ('newTitle1'), ('newTitle2'), ('newTitle3'), ('newTitle4'), ('newTitle5'), ('newTitle6'), ('newTitle7'), ('newTitle8'), ('newTitle9')", sql);
+
+            sql = insert.AppendData(items).IgnoreColumns(a => a.CreateTime).AsTable(a => "Topic_InsertAsTable").ToSql();
+            Assert.Equal("INSERT INTO \"topic_insertastable\"(\"clicks\", \"title\") VALUES(0, 'newTitle0'), (100, 'newTitle1'), (200, 'newTitle2'), (300, 'newTitle3'), (400, 'newTitle4'), (500, 'newTitle5'), (600, 'newTitle6'), (700, 'newTitle7'), (800, 'newTitle8'), (900, 'newTitle9')", sql);
+
+            sql = insert.AppendData(items).InsertColumns(a => a.Title).AsTable(a => "Topic_InsertAsTable").ToSql();
+            Assert.Equal("INSERT INTO \"topic_insertastable\"(\"title\") VALUES('newTitle0'), ('newTitle1'), ('newTitle2'), ('newTitle3'), ('newTitle4'), ('newTitle5'), ('newTitle6'), ('newTitle7'), ('newTitle8'), ('newTitle9')", sql);
+
+            sql = insert.AppendData(items).InsertColumns(a => new { a.Title, a.Clicks }).AsTable(a => "Topic_InsertAsTable").ToSql();
+            Assert.Equal("INSERT INTO \"topic_insertastable\"(\"clicks\", \"title\") VALUES(0, 'newTitle0'), (100, 'newTitle1'), (200, 'newTitle2'), (300, 'newTitle3'), (400, 'newTitle4'), (500, 'newTitle5'), (600, 'newTitle6'), (700, 'newTitle7'), (800, 'newTitle8'), (900, 'newTitle9')", sql);
+
+            sql = insert.AppendData(items).IgnoreColumns(a => a.CreateTime).AsTable(a => "Topic_InsertAsTable").ToSql();
+            Assert.Equal("INSERT INTO \"topic_insertastable\"(\"clicks\", \"title\") VALUES(0, 'newTitle0'), (100, 'newTitle1'), (200, 'newTitle2'), (300, 'newTitle3'), (400, 'newTitle4'), (500, 'newTitle5'), (600, 'newTitle6'), (700, 'newTitle7'), (800, 'newTitle8'), (900, 'newTitle9')", sql);
+
+            sql = insert.AppendData(items).IgnoreColumns(a => new { a.Title, a.CreateTime }).AsTable(a => "Topic_InsertAsTable").ToSql();
+            Assert.Equal("INSERT INTO \"topic_insertastable\"(\"clicks\") VALUES(0), (100), (200), (300), (400), (500), (600), (700), (800), (900)", sql);
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/Curd/PostgreSQLUpdateTest.cs

@@ -0,0 +1,147 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.PostgreSQL
+{
+    public class PostgreSQLUpdateTest
+    {
+        IUpdate<Topic> update => g.pgsql.Update<Topic>();
+
+        [Table(Name = "tb_topic")]
+        class Topic
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int? Clicks { get; set; }
+            public TestTypeInfo Type { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+
+        [Fact]
+        public void Dywhere()
+        {
+            Assert.Null(g.pgsql.Update<Topic>().ToSql());
+            Assert.Equal("UPDATE \"tb_topic\" SET title='test' \r\nWHERE (\"id\" = 1 OR \"id\" = 2)", g.pgsql.Update<Topic>(new[] { 1, 2 }).SetRaw("title='test'").ToSql());
+            Assert.Equal("UPDATE \"tb_topic\" SET title='test1' \r\nWHERE (\"id\" = 1)", g.pgsql.Update<Topic>(new Topic { Id = 1, Title = "test" }).SetRaw("title='test1'").ToSql());
+            Assert.Equal("UPDATE \"tb_topic\" SET title='test1' \r\nWHERE (\"id\" = 1 OR \"id\" = 2)", g.pgsql.Update<Topic>(new[] { new Topic { Id = 1, Title = "test" }, new Topic { Id = 2, Title = "test" } }).SetRaw("title='test1'").ToSql());
+            Assert.Equal("UPDATE \"tb_topic\" SET title='test1' \r\nWHERE (\"id\" = 1)", g.pgsql.Update<Topic>(new { id = 1 }).SetRaw("title='test1'").ToSql());
+        }
+
+        [Fact]
+        public void SetSource()
+        {
+            var sql = update.SetSource(new Topic { Id = 1, Title = "newtitle" }).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET \"clicks\" = NULL, \"title\" = 'newtitle', \"createtime\" = '0001-01-01 00:00:00.000000' WHERE (\"id\" = 1)", sql);
+
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100 });
+            items[0].Clicks = null;
+
+            sql = update.SetSource(items).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET \"clicks\" = CASE \"id\" WHEN 1 THEN NULL WHEN 2 THEN 100 WHEN 3 THEN 200 WHEN 4 THEN 300 WHEN 5 THEN 400 WHEN 6 THEN 500 WHEN 7 THEN 600 WHEN 8 THEN 700 WHEN 9 THEN 800 WHEN 10 THEN 900 END::int4, \"title\" = CASE \"id\" WHEN 1 THEN 'newtitle0' WHEN 2 THEN 'newtitle1' WHEN 3 THEN 'newtitle2' WHEN 4 THEN 'newtitle3' WHEN 5 THEN 'newtitle4' WHEN 6 THEN 'newtitle5' WHEN 7 THEN 'newtitle6' WHEN 8 THEN 'newtitle7' WHEN 9 THEN 'newtitle8' WHEN 10 THEN 'newtitle9' END::varchar, \"createtime\" = CASE \"id\" WHEN 1 THEN '0001-01-01 00:00:00.000000' WHEN 2 THEN '0001-01-01 00:00:00.000000' WHEN 3 THEN '0001-01-01 00:00:00.000000' WHEN 4 THEN '0001-01-01 00:00:00.000000' WHEN 5 THEN '0001-01-01 00:00:00.000000' WHEN 6 THEN '0001-01-01 00:00:00.000000' WHEN 7 THEN '0001-01-01 00:00:00.000000' WHEN 8 THEN '0001-01-01 00:00:00.000000' WHEN 9 THEN '0001-01-01 00:00:00.000000' WHEN 10 THEN '0001-01-01 00:00:00.000000' END::timestamp WHERE (\"id\" IN (1,2,3,4,5,6,7,8,9,10))", sql);
+
+            sql = update.SetSource(items).IgnoreColumns(a => new { a.Clicks, a.CreateTime }).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET \"title\" = CASE \"id\" WHEN 1 THEN 'newtitle0' WHEN 2 THEN 'newtitle1' WHEN 3 THEN 'newtitle2' WHEN 4 THEN 'newtitle3' WHEN 5 THEN 'newtitle4' WHEN 6 THEN 'newtitle5' WHEN 7 THEN 'newtitle6' WHEN 8 THEN 'newtitle7' WHEN 9 THEN 'newtitle8' WHEN 10 THEN 'newtitle9' END::varchar WHERE (\"id\" IN (1,2,3,4,5,6,7,8,9,10))", sql);
+
+            sql = update.SetSource(items).Set(a => a.CreateTime, new DateTime(2020, 1, 1)).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET \"createtime\" = '2020-01-01 00:00:00.000000' WHERE (\"id\" IN (1,2,3,4,5,6,7,8,9,10))", sql);
+        }
+        [Fact]
+        public void IgnoreColumns()
+        {
+            var sql = update.SetSource(new Topic { Id = 1, Title = "newtitle" }).IgnoreColumns(a => new { a.Clicks, a.CreateTime }).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET \"title\" = 'newtitle' WHERE (\"id\" = 1)", sql);
+        }
+        [Fact]
+        public void UpdateColumns()
+        {
+            var sql = update.SetSource(new Topic { Id = 1, Title = "newtitle" }).UpdateColumns(a => a.Title).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET \"title\" = 'newtitle' WHERE (\"id\" = 1)", sql);
+        }
+        [Fact]
+        public void Set()
+        {
+            var sql = update.Where(a => a.Id == 1).Set(a => a.Title, "newtitle").ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET \"title\" = 'newtitle' WHERE (\"id\" = 1)", sql);
+
+            sql = update.Where(a => a.Id == 1).Set(a => a.Title, "newtitle").Set(a => a.CreateTime, new DateTime(2020, 1, 1)).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET \"title\" = 'newtitle', \"createtime\" = '2020-01-01 00:00:00.000000' WHERE (\"id\" = 1)", sql);
+
+            sql = update.Set(a => a.Clicks * 10 / 1).Where(a => a.Id == 1).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET \"clicks\" = coalesce(\"clicks\", 0) * 10 / 1 WHERE (\"id\" = 1)", sql);
+
+            sql = update.Set(a => a.Id - 10).Where(a => a.Id == 1).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET \"id\" = (\"id\" - 10) WHERE (\"id\" = 1)", sql);
+
+            int incrv = 10;
+            sql = update.Set(a => a.Clicks * incrv / 1).Where(a => a.Id == 1).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET \"clicks\" = coalesce(\"clicks\", 0) * 10 / 1 WHERE (\"id\" = 1)", sql);
+
+            sql = update.Set(a => a.Id - incrv).Where(a => a.Id == 1).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET \"id\" = (\"id\" - 10) WHERE (\"id\" = 1)", sql);
+
+            sql = update.Set(a => a.Clicks == a.Clicks * 10 / 1).Where(a => a.Id == 1).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET \"clicks\" = \"clicks\" * 10 / 1 WHERE (\"id\" = 1)", sql);
+
+            sql = update.Set(a => a.Id == 10).Where(a => a.Id == 1).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET \"id\" = 10 WHERE (\"id\" = 1)", sql);
+        }
+        [Fact]
+        public void SetRaw()
+        {
+            var sql = update.Where(a => a.Id == 1).SetRaw("clicks = clicks + ?", new { incrClick = 1 }).ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET clicks = clicks + ? WHERE (\"id\" = 1)", sql);
+        }
+        [Fact]
+        public void Where()
+        {
+            var sql = update.Where(a => a.Id == 1).SetRaw("title='newtitle'").ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET title='newtitle' WHERE (\"id\" = 1)", sql);
+
+            sql = update.Where("id = ?", new { id = 1 }).SetRaw("title='newtitle'").ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET title='newtitle' WHERE (id = ?)", sql);
+
+            var item = new Topic { Id = 1, Title = "newtitle" };
+            sql = update.Where(item).SetRaw("title='newtitle'").ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET title='newtitle' WHERE (\"id\" = 1)", sql);
+
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100 });
+            sql = update.Where(items).SetRaw("title='newtitle'").ToSql().Replace("\r\n", "");
+            Assert.Equal("UPDATE \"tb_topic\" SET title='newtitle' WHERE (\"id\" IN (1,2,3,4,5,6,7,8,9,10))", sql);
+        }
+        [Fact]
+        public void WhereExists()
+        {
+
+        }
+        [Fact]
+        public void ExecuteAffrows()
+        {
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100 });
+
+            update.SetSource(items.First()).NoneParameter().ExecuteAffrows();
+            update.SetSource(items).NoneParameter().ExecuteAffrows();
+        }
+        [Fact]
+        public void ExecuteUpdated()
+        {
+
+        }
+
+        [Fact]
+        public void AsTable()
+        {
+            Assert.Null(g.pgsql.Update<Topic>().ToSql());
+            Assert.Equal("UPDATE \"tb_topicastable\" SET title='test' \r\nWHERE (\"id\" = 1 OR \"id\" = 2)", g.pgsql.Update<Topic>(new[] { 1, 2 }).SetRaw("title='test'").AsTable(a => "tb_topicAsTable").ToSql());
+            Assert.Equal("UPDATE \"tb_topicastable\" SET title='test1' \r\nWHERE (\"id\" = 1)", g.pgsql.Update<Topic>(new Topic { Id = 1, Title = "test" }).SetRaw("title='test1'").AsTable(a => "tb_topicAsTable").ToSql());
+            Assert.Equal("UPDATE \"tb_topicastable\" SET title='test1' \r\nWHERE (\"id\" = 1 OR \"id\" = 2)", g.pgsql.Update<Topic>(new[] { new Topic { Id = 1, Title = "test" }, new Topic { Id = 2, Title = "test" } }).SetRaw("title='test1'").AsTable(a => "tb_topicAsTable").ToSql());
+            Assert.Equal("UPDATE \"tb_topicastable\" SET title='test1' \r\nWHERE (\"id\" = 1)", g.pgsql.Update<Topic>(new { id = 1 }).SetRaw("title='test1'").AsTable(a => "tb_topicAsTable").ToSql());
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/MapType/DateTimeOffSetTest.cs

@@ -0,0 +1,54 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Numerics;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.PostgreSQLMapType
+{
+    public class DateTimeOffSetTest
+    {
+        class DateTimeOffSetTestMap
+        {
+            public Guid id { get; set; }
+
+            [Column(MapType = typeof(DateTime))]
+            public DateTimeOffset dtos_to_dt { get; set; }
+            [Column(MapType = typeof(DateTime))]
+            public DateTimeOffset? dtosnullable_to_dt { get; set; }
+        }
+        [Fact]
+        public void DateTimeToDateTimeOffSet()
+        {
+            //insert
+            var orm = g.pgsql;
+            var item = new DateTimeOffSetTestMap { dtos_to_dt = DateTimeOffset.Now, dtosnullable_to_dt = DateTimeOffset.Now };
+            Assert.Equal(1, orm.Insert<DateTimeOffSetTestMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<DateTimeOffSetTestMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.dtos_to_dt.ToString("g"), find.dtos_to_dt.ToString("g"));
+            Assert.Equal(item.dtosnullable_to_dt.Value.ToString("g"), find.dtosnullable_to_dt.Value.ToString("g"));
+
+            //update all
+            item.dtos_to_dt = DateTimeOffset.Now;
+            Assert.Equal(1, orm.Update<DateTimeOffSetTestMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<DateTimeOffSetTestMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.dtos_to_dt.ToString("g"), find.dtos_to_dt.ToString("g"));
+            Assert.Equal(item.dtosnullable_to_dt.Value.ToString("g"), find.dtosnullable_to_dt.Value.ToString("g"));
+
+            //update set
+            Assert.Equal(1, orm.Update<DateTimeOffSetTestMap>().Where(a => a.id == item.id).Set(a => a.dtos_to_dt, item.dtos_to_dt = DateTimeOffset.Now).ExecuteAffrows());
+            find = orm.Select<DateTimeOffSetTestMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.dtos_to_dt.ToString("g"), find.dtos_to_dt.ToString("g"));
+            Assert.Equal(item.dtosnullable_to_dt.Value.ToString("g"), find.dtosnullable_to_dt.Value.ToString("g"));
+
+            //delete
+            Assert.Equal(1, orm.Delete<DateTimeOffSetTestMap>().Where(a => a.id == item.id).ExecuteAffrows());
+            Assert.Null(orm.Select<DateTimeOffSetTestMap>().Where(a => a.id == item.id).First());
+        }
+        
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/MapType/EnumTest.cs

@@ -0,0 +1,261 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Numerics;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.PostgreSQLMapType
+{
+    public class EnumTest
+    {
+        class EnumTestMap
+        {
+            public Guid id { get; set; }
+
+            [Column(MapType = typeof(string))]
+            public ToStringMapEnum enum_to_string { get; set; }
+            [Column(MapType = typeof(string))]
+            public ToStringMapEnum? enumnullable_to_string { get; set; }
+
+            [Column(MapType = typeof(int))]
+            public ToStringMapEnum enum_to_int { get; set; }
+            [Column(MapType = typeof(int?))]
+            public ToStringMapEnum? enumnullable_to_int { get; set; }
+        }
+        public enum ToStringMapEnum { 中国人, abc, 香港 }
+        [Fact]
+        public void EnumToString()
+        {
+            //insert
+            var orm = g.pgsql;
+            var item = new EnumTestMap { };
+            Assert.Equal(1, orm.Insert<EnumTestMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.中国人).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_string, find.enum_to_string);
+            Assert.Equal(ToStringMapEnum.中国人, find.enum_to_string);
+
+            item = new EnumTestMap { enum_to_string = ToStringMapEnum.abc };
+            Assert.Equal(1, orm.Insert<EnumTestMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.abc).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_string, find.enum_to_string);
+            Assert.Equal(ToStringMapEnum.abc, find.enum_to_string);
+
+            //update all
+            item.enum_to_string = ToStringMapEnum.香港;
+            Assert.Equal(1, orm.Update<EnumTestMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.香港).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_string, find.enum_to_string);
+            Assert.Equal(ToStringMapEnum.香港, find.enum_to_string);
+
+            item.enum_to_string = ToStringMapEnum.中国人;
+            Assert.Equal(1, orm.Update<EnumTestMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.中国人).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_string, find.enum_to_string);
+            Assert.Equal(ToStringMapEnum.中国人, find.enum_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<EnumTestMap>().Where(a => a.id == item.id).Set(a => a.enum_to_string, ToStringMapEnum.香港).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.香港).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(ToStringMapEnum.香港, find.enum_to_string);
+
+            Assert.Equal(1, orm.Update<EnumTestMap>().Where(a => a.id == item.id).Set(a => a.enum_to_string, ToStringMapEnum.abc).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.abc).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(ToStringMapEnum.abc, find.enum_to_string);
+
+            //delete
+            Assert.Equal(0, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.中国人).ExecuteAffrows());
+            Assert.Equal(0, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.香港).ExecuteAffrows());
+            Assert.Equal(1, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.abc).ExecuteAffrows());
+            Assert.Null(orm.Select<EnumTestMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void EnumNullableToString()
+        {
+            //insert
+            var orm = g.pgsql;
+            var item = new EnumTestMap { };
+            Assert.Equal(1, orm.Insert<EnumTestMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_string, find.enumnullable_to_string);
+            Assert.Null(find.enumnullable_to_string);
+
+            item = new EnumTestMap { enumnullable_to_string = ToStringMapEnum.中国人 };
+            Assert.Equal(1, orm.Insert<EnumTestMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.中国人).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_string, find.enumnullable_to_string);
+            Assert.Equal(ToStringMapEnum.中国人, find.enumnullable_to_string);
+
+            //update all
+            item.enumnullable_to_string = ToStringMapEnum.香港;
+            Assert.Equal(1, orm.Update<EnumTestMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.香港).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_string, find.enumnullable_to_string);
+            Assert.Equal(ToStringMapEnum.香港, find.enumnullable_to_string);
+
+            item.enumnullable_to_string = null;
+            Assert.Equal(1, orm.Update<EnumTestMap>().SetSource(item).ExecuteAffrows());
+            Assert.Null(orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.香港).First());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_string, find.enumnullable_to_string);
+            Assert.Null(find.enumnullable_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<EnumTestMap>().Where(a => a.id == item.id).Set(a => a.enumnullable_to_string, ToStringMapEnum.abc).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.abc).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(ToStringMapEnum.abc, find.enumnullable_to_string);
+
+
+            Assert.Equal(1, orm.Update<EnumTestMap>().Where(a => a.id == item.id).Set(a => a.enumnullable_to_string, null).ExecuteAffrows());
+            Assert.Null(orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.abc).First());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Null(find.enumnullable_to_string);
+
+            //delete
+            Assert.Equal(0, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.中国人).ExecuteAffrows());
+            Assert.Equal(0, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.香港).ExecuteAffrows());
+            Assert.Equal(1, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_string == null).ExecuteAffrows());
+            Assert.Null(orm.Select<EnumTestMap>().Where(a => a.id == item.id).First());
+        }
+
+        [Fact]
+        public void EnumToInt()
+        {
+            //insert
+            var orm = g.pgsql;
+            var item = new EnumTestMap { };
+            Assert.Equal(1, orm.Insert<EnumTestMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_int == ToStringMapEnum.中国人).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_int, find.enum_to_int);
+            Assert.Equal(ToStringMapEnum.中国人, find.enum_to_int);
+
+            item = new EnumTestMap { enum_to_int = ToStringMapEnum.abc };
+            Assert.Equal(1, orm.Insert<EnumTestMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_int == ToStringMapEnum.abc).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_int, find.enum_to_int);
+            Assert.Equal(ToStringMapEnum.abc, find.enum_to_int);
+
+            //update all
+            item.enum_to_int = ToStringMapEnum.香港;
+            Assert.Equal(1, orm.Update<EnumTestMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_int == ToStringMapEnum.香港).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_int, find.enum_to_int);
+            Assert.Equal(ToStringMapEnum.香港, find.enum_to_int);
+
+            item.enum_to_int = ToStringMapEnum.中国人;
+            Assert.Equal(1, orm.Update<EnumTestMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_int == ToStringMapEnum.中国人).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_int, find.enum_to_int);
+            Assert.Equal(ToStringMapEnum.中国人, find.enum_to_int);
+
+            //update set
+            Assert.Equal(1, orm.Update<EnumTestMap>().Where(a => a.id == item.id).Set(a => a.enum_to_int, ToStringMapEnum.香港).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_int == ToStringMapEnum.香港).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(ToStringMapEnum.香港, find.enum_to_int);
+
+            Assert.Equal(1, orm.Update<EnumTestMap>().Where(a => a.id == item.id).Set(a => a.enum_to_int, ToStringMapEnum.abc).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_int == ToStringMapEnum.abc).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(ToStringMapEnum.abc, find.enum_to_int);
+
+            //delete
+            Assert.Equal(0, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_int == ToStringMapEnum.中国人).ExecuteAffrows());
+            Assert.Equal(0, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_int == ToStringMapEnum.香港).ExecuteAffrows());
+            Assert.Equal(1, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enum_to_int == ToStringMapEnum.abc).ExecuteAffrows());
+            Assert.Null(orm.Select<EnumTestMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void EnumNullableToInt()
+        {
+            //insert
+            var orm = g.pgsql;
+            var item = new EnumTestMap { };
+            Assert.Equal(1, orm.Insert<EnumTestMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_int, find.enumnullable_to_int);
+            Assert.Null(find.enumnullable_to_int);
+
+            item = new EnumTestMap { enumnullable_to_int = ToStringMapEnum.中国人 };
+            Assert.Equal(1, orm.Insert<EnumTestMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == ToStringMapEnum.中国人).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_int, find.enumnullable_to_int);
+            Assert.Equal(ToStringMapEnum.中国人, find.enumnullable_to_int);
+
+            //update all
+            item.enumnullable_to_int = ToStringMapEnum.香港;
+            Assert.Equal(1, orm.Update<EnumTestMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == ToStringMapEnum.香港).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_int, find.enumnullable_to_int);
+            Assert.Equal(ToStringMapEnum.香港, find.enumnullable_to_int);
+
+            item.enumnullable_to_int = null;
+            Assert.Equal(1, orm.Update<EnumTestMap>().SetSource(item).ExecuteAffrows());
+            Assert.Null(orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == ToStringMapEnum.香港).First());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_int, find.enumnullable_to_int);
+            Assert.Null(find.enumnullable_to_int);
+
+            //update set
+            Assert.Equal(1, orm.Update<EnumTestMap>().Where(a => a.id == item.id).Set(a => a.enumnullable_to_int, ToStringMapEnum.abc).ExecuteAffrows());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == ToStringMapEnum.abc).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(ToStringMapEnum.abc, find.enumnullable_to_int);
+
+
+            Assert.Equal(1, orm.Update<EnumTestMap>().Where(a => a.id == item.id).Set(a => a.enumnullable_to_int, null).ExecuteAffrows());
+            Assert.Null(orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == ToStringMapEnum.abc).First());
+            find = orm.Select<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Null(find.enumnullable_to_int);
+
+            //delete
+            Assert.Equal(0, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == ToStringMapEnum.中国人).ExecuteAffrows());
+            Assert.Equal(0, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == ToStringMapEnum.香港).ExecuteAffrows());
+            Assert.Equal(1, orm.Delete<EnumTestMap>().Where(a => a.id == item.id && a.enumnullable_to_int == null).ExecuteAffrows());
+            Assert.Null(orm.Select<EnumTestMap>().Where(a => a.id == item.id).First());
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/MapType/ToStringTest.cs

@@ -0,0 +1,570 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Numerics;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.PostgreSQLMapType
+{
+    public class ToStringTest
+    {
+        class ToStringMap
+        {
+            public Guid id { get; set; }
+
+            [Column(MapType = typeof(string))]
+            public TimeSpan timespan_to_string { get; set; }
+            [Column(MapType = typeof(string))]
+            public TimeSpan? timespannullable_to_string { get; set; }
+
+            [Column(MapType = typeof(string))]
+            public DateTime datetime_to_string { get; set; }
+            [Column(MapType = typeof(string))]
+            public DateTime? datetimenullable_to_string { get; set; }
+
+            [Column(MapType = typeof(string))]
+            public Guid guid_to_string { get; set; }
+            [Column(MapType = typeof(string))]
+            public Guid? guidnullable_to_string { get; set; }
+
+            [Column(MapType = typeof(string))]
+            public ToStringMapEnum enum_to_string { get; set; }
+            [Column(MapType = typeof(string))]
+            public ToStringMapEnum? enumnullable_to_string { get; set; }
+
+            [Column(MapType = typeof(string))]
+            public BigInteger biginteger_to_string { get; set; }
+            [Column(MapType = typeof(string))]
+            public BigInteger? bigintegernullable_to_string { get; set; }
+        }
+        public enum ToStringMapEnum { 中国人, abc, 香港 }
+        [Fact]
+        public void Enum1()
+        {
+            //insert
+            var orm = g.pgsql;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.中国人).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_string, find.enum_to_string);
+            Assert.Equal(ToStringMapEnum.中国人, find.enum_to_string);
+
+            item = new ToStringMap { enum_to_string = ToStringMapEnum.abc };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.abc).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_string, find.enum_to_string);
+            Assert.Equal(ToStringMapEnum.abc, find.enum_to_string);
+
+            //update all
+            item.enum_to_string = ToStringMapEnum.香港;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.香港).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_string, find.enum_to_string);
+            Assert.Equal(ToStringMapEnum.香港, find.enum_to_string);
+
+            item.enum_to_string = ToStringMapEnum.中国人;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.中国人).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enum_to_string, find.enum_to_string);
+            Assert.Equal(ToStringMapEnum.中国人, find.enum_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.enum_to_string, ToStringMapEnum.香港).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.香港).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(ToStringMapEnum.香港, find.enum_to_string);
+
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.enum_to_string, ToStringMapEnum.abc).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.abc).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(ToStringMapEnum.abc, find.enum_to_string);
+
+            //delete
+            Assert.Equal(0, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.中国人).ExecuteAffrows());
+            Assert.Equal(0, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.香港).ExecuteAffrows());
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.enum_to_string == ToStringMapEnum.abc).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void EnumNullable()
+        {
+            //insert
+            var orm = g.pgsql;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_string, find.enumnullable_to_string);
+            Assert.Null(find.enumnullable_to_string);
+
+            item = new ToStringMap { enumnullable_to_string = ToStringMapEnum.中国人 };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.中国人).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_string, find.enumnullable_to_string);
+            Assert.Equal(ToStringMapEnum.中国人, find.enumnullable_to_string);
+
+            //update all
+            item.enumnullable_to_string = ToStringMapEnum.香港;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.香港).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_string, find.enumnullable_to_string);
+            Assert.Equal(ToStringMapEnum.香港, find.enumnullable_to_string);
+
+            item.enumnullable_to_string = null;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.香港).First());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.enumnullable_to_string, find.enumnullable_to_string);
+            Assert.Null(find.enumnullable_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.enumnullable_to_string, ToStringMapEnum.abc).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.abc).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(ToStringMapEnum.abc, find.enumnullable_to_string);
+
+
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.enumnullable_to_string, null).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.abc).First());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Null(find.enumnullable_to_string);
+
+            //delete
+            Assert.Equal(0, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.中国人).ExecuteAffrows());
+            Assert.Equal(0, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == ToStringMapEnum.香港).ExecuteAffrows());
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.enumnullable_to_string == null).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void BigInteger1()
+        {
+            //insert
+            var orm = g.pgsql;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.biginteger_to_string == 0).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.biginteger_to_string, find.biginteger_to_string);
+            Assert.Equal(0, find.biginteger_to_string);
+
+            item = new ToStringMap { biginteger_to_string = 100 };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.biginteger_to_string == 100).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.biginteger_to_string, find.biginteger_to_string);
+            Assert.Equal(100, find.biginteger_to_string);
+
+            //update all
+            item.biginteger_to_string = 200;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.biginteger_to_string == 200).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.biginteger_to_string, find.biginteger_to_string);
+            Assert.Equal(200, find.biginteger_to_string);
+
+            item.biginteger_to_string = 205;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.biginteger_to_string == 205).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.biginteger_to_string, find.biginteger_to_string);
+            Assert.Equal(205, find.biginteger_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.biginteger_to_string, 522).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.biginteger_to_string == 522).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(522, find.biginteger_to_string);
+
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.biginteger_to_string, 10005).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.biginteger_to_string == 10005).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(10005, find.biginteger_to_string);
+
+            //delete
+            Assert.Equal(0, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.biginteger_to_string == 522).ExecuteAffrows());
+            Assert.Equal(0, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.biginteger_to_string == 205).ExecuteAffrows());
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.biginteger_to_string == 10005).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void BigIntegerNullable()
+        {
+            //insert
+            var orm = g.pgsql;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.bigintegernullable_to_string, find.bigintegernullable_to_string);
+            Assert.Null(find.bigintegernullable_to_string);
+
+            item = new ToStringMap { bigintegernullable_to_string = 101 };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == 101).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.bigintegernullable_to_string, find.bigintegernullable_to_string);
+            Assert.Equal(101, find.bigintegernullable_to_string);
+
+            //update all
+            item.bigintegernullable_to_string = 2004;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == 2004).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.bigintegernullable_to_string, find.bigintegernullable_to_string);
+            Assert.Equal(2004, find.bigintegernullable_to_string);
+
+            item.bigintegernullable_to_string = null;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == 2004).First());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.bigintegernullable_to_string, find.bigintegernullable_to_string);
+            Assert.Null(find.bigintegernullable_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.bigintegernullable_to_string, 998).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == 998).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(998, find.bigintegernullable_to_string);
+
+
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.bigintegernullable_to_string, null).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == 998).First());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Null(find.bigintegernullable_to_string);
+
+            //delete
+            Assert.Equal(0, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == 998).ExecuteAffrows());
+            Assert.Equal(0, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == 2004).ExecuteAffrows());
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.bigintegernullable_to_string == null).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void TimeSpan1()
+        {
+            //insert
+            var orm = g.pgsql;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.timespan_to_string, find.timespan_to_string);
+            Assert.Equal(TimeSpan.Zero, find.timespan_to_string);
+
+            item = new ToStringMap { timespan_to_string = TimeSpan.FromDays(1) };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.timespan_to_string, find.timespan_to_string);
+            Assert.Equal(TimeSpan.FromDays(1), find.timespan_to_string);
+
+            //update all
+            item.timespan_to_string = TimeSpan.FromHours(10);
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.timespan_to_string, find.timespan_to_string);
+            Assert.Equal(TimeSpan.FromHours(10), find.timespan_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.timespan_to_string, TimeSpan.FromHours(11)).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(TimeSpan.FromHours(11), find.timespan_to_string);
+
+            //delete
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void TimeSpanNullable()
+        {
+            //insert
+            var orm = g.pgsql;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.timespannullable_to_string, find.timespannullable_to_string);
+            Assert.Null(find.timespannullable_to_string);
+
+            item = new ToStringMap { timespannullable_to_string = TimeSpan.FromDays(1) };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.timespannullable_to_string, find.timespannullable_to_string);
+            Assert.Equal(TimeSpan.FromDays(1), find.timespannullable_to_string);
+
+            //update all
+            item.timespannullable_to_string = TimeSpan.FromHours(10);
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.timespannullable_to_string, find.timespannullable_to_string);
+            Assert.Equal(TimeSpan.FromHours(10), find.timespannullable_to_string);
+
+            item.timespannullable_to_string = null;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.timespannullable_to_string, find.timespannullable_to_string);
+            Assert.Null(find.timespannullable_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.timespannullable_to_string, TimeSpan.FromHours(11)).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(TimeSpan.FromHours(11), find.timespannullable_to_string);
+
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.timespannullable_to_string, null).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Null(find.timespannullable_to_string);
+
+            //delete
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void DateTime1()
+        {
+            //insert
+            var orm = g.pgsql;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.datetime_to_string, find.datetime_to_string);
+            Assert.Equal(DateTime.MinValue, find.datetime_to_string);
+
+            item = new ToStringMap { datetime_to_string = DateTime.Parse("2000-1-1") };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.datetime_to_string, find.datetime_to_string);
+            Assert.Equal(DateTime.Parse("2000-1-1"), find.datetime_to_string);
+
+            //update all
+            item.datetime_to_string = DateTime.Parse("2000-1-11");
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.datetime_to_string, find.datetime_to_string);
+            Assert.Equal(DateTime.Parse("2000-1-11"), find.datetime_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.datetime_to_string, DateTime.Parse("2000-1-12")).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(DateTime.Parse("2000-1-12"), find.datetime_to_string);
+
+            //delete
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void DateTimeNullable()
+        {
+            //insert
+            var orm = g.pgsql;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.datetimenullable_to_string, find.datetimenullable_to_string);
+            Assert.Null(find.datetimenullable_to_string);
+
+            item = new ToStringMap { datetimenullable_to_string = DateTime.Parse("2000-1-1") };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.datetimenullable_to_string, find.datetimenullable_to_string);
+            Assert.Equal(DateTime.Parse("2000-1-1"), find.datetimenullable_to_string);
+
+            //update all
+            item.datetimenullable_to_string = DateTime.Parse("2000-1-11");
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.datetimenullable_to_string, find.datetimenullable_to_string);
+            Assert.Equal(DateTime.Parse("2000-1-11"), find.datetimenullable_to_string);
+
+            item.datetimenullable_to_string = null;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.datetimenullable_to_string, find.datetimenullable_to_string);
+            Assert.Null(find.datetimenullable_to_string);
+
+            //update set
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.datetimenullable_to_string, DateTime.Parse("2000-1-12")).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(DateTime.Parse("2000-1-12"), find.datetimenullable_to_string);
+
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.datetimenullable_to_string, null).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Null(find.datetimenullable_to_string);
+
+            //delete
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+
+        [Fact]
+        public void Guid1()
+        {
+            //insert
+            var orm = g.pgsql;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guid_to_string == Guid.Empty).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.guid_to_string, find.guid_to_string);
+            Assert.Equal(Guid.Empty, find.guid_to_string);
+
+            var newid = Guid.NewGuid();
+            item = new ToStringMap { guid_to_string = newid };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guid_to_string == newid).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.guid_to_string, find.guid_to_string);
+            Assert.Equal(newid, find.guid_to_string);
+
+            //update all
+            newid = Guid.NewGuid();
+            item.guid_to_string = newid;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guid_to_string == newid).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.guid_to_string, find.guid_to_string);
+            Assert.Equal(newid, find.guid_to_string);
+
+            //update set
+            newid = Guid.NewGuid();
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.guid_to_string, newid).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guid_to_string == newid).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(newid, find.guid_to_string);
+
+            //delete
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.guid_to_string == newid).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+        [Fact]
+        public void GuidNullable()
+        {
+            //insert
+            var orm = g.pgsql;
+            var item = new ToStringMap { };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            var find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guidnullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.guidnullable_to_string, find.guidnullable_to_string);
+            Assert.Null(find.guidnullable_to_string);
+
+            var newid = Guid.NewGuid();
+            item = new ToStringMap { guidnullable_to_string = newid };
+            Assert.Equal(1, orm.Insert<ToStringMap>().AppendData(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guidnullable_to_string == newid).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.guidnullable_to_string, find.guidnullable_to_string);
+            Assert.Equal(newid, find.guidnullable_to_string);
+
+            //update all
+            newid = Guid.NewGuid();
+            item.guidnullable_to_string = newid;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guidnullable_to_string == newid).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.guidnullable_to_string, find.guidnullable_to_string);
+            Assert.Equal(newid, find.guidnullable_to_string);
+
+            item.guidnullable_to_string = null;
+            Assert.Equal(1, orm.Update<ToStringMap>().SetSource(item).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guidnullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(item.guidnullable_to_string, find.guidnullable_to_string);
+            Assert.Null(find.guidnullable_to_string);
+
+            //update set
+            newid = Guid.NewGuid();
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.guidnullable_to_string, newid).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guidnullable_to_string == newid).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Equal(newid, find.guidnullable_to_string);
+
+            Assert.Equal(1, orm.Update<ToStringMap>().Where(a => a.id == item.id).Set(a => a.guidnullable_to_string, null).ExecuteAffrows());
+            find = orm.Select<ToStringMap>().Where(a => a.id == item.id && a.guidnullable_to_string == null).First();
+            Assert.NotNull(find);
+            Assert.Equal(item.id, find.id);
+            Assert.Null(find.guidnullable_to_string);
+
+            //delete
+            Assert.Equal(1, orm.Delete<ToStringMap>().Where(a => a.id == item.id && a.guidnullable_to_string == null).ExecuteAffrows());
+            Assert.Null(orm.Select<ToStringMap>().Where(a => a.id == item.id).First());
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/PostgreSQLAdo/PostgreSQLAdoTest.cs

@@ -0,0 +1,70 @@
+using FreeSql.DataAnnotations;
+using System;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.PostgreSQL
+{
+    public class PostgreSQLAdoTest
+    {
+        [Fact]
+        public void Pool()
+        {
+            var t1 = g.pgsql.Ado.MasterPool.StatisticsFullily;
+        }
+
+        [Fact]
+        public void SlavePools()
+        {
+            var t2 = g.pgsql.Ado.SlavePools.Count;
+        }
+
+        [Fact]
+        public void ExecuteReader()
+        {
+
+        }
+        [Fact]
+        public void ExecuteArray()
+        {
+
+        }
+        [Fact]
+        public void ExecuteNonQuery()
+        {
+
+        }
+        [Fact]
+        public void ExecuteScalar()
+        {
+
+        }
+
+        [Fact]
+        public void Query()
+        {
+
+            g.pgsql.CodeFirst.SyncStructure<xxx>();
+            var t3 = g.pgsql.Ado.Query<xxx>("select * from xxx");
+
+            var t4 = g.pgsql.Ado.Query<(int, string, string)>("select * from xxx");
+
+            var t5 = g.pgsql.Ado.Query<dynamic>("select * from xxx");
+        }
+
+        [Fact]
+        public void QueryMultipline()
+        {
+            g.pgsql.CodeFirst.SyncStructure<xxx>();
+            var t3 = g.pgsql.Ado.Query<xxx, (int, string, string), dynamic>("select * from xxx; select * from xxx; select * from xxx");
+        }
+
+        class xxx
+        {
+            public string Id { get; set; }
+            public string Path { get; set; }
+            public string Title2 { get; set; }
+
+            public string testf { get; set; }
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/PostgreSQLAopTest.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Collections.Generic;
+using System.Reflection;
+using System.Text;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.PostgreSQL
+{
+    public class PostgreSQLAopTest
+    {
+
+        class TestAuditValue
+        {
+            public Guid id { get; set; }
+            [Now]
+            public DateTime createtime { get; set; }
+        }
+        class NowAttribute: Attribute { }
+
+        [Fact]
+        public void AuditValue()
+        {
+            var date = DateTime.Now.Date;
+            var item = new TestAuditValue();
+
+            EventHandler<Aop.AuditValueEventArgs> audit = (s, e) =>
+             {
+                 if (e.Property.GetCustomAttribute<NowAttribute>(false) != null)
+                     e.Value = DateTime.Now.Date;
+             };
+            g.pgsql.Aop.AuditValue += audit;
+
+            g.pgsql.Insert(item).ExecuteAffrows();
+
+            g.pgsql.Aop.AuditValue -= audit;
+
+            Assert.Equal(item.createtime, date);
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/PostgreSQLCodeFirstTest.cs

@@ -0,0 +1,220 @@
+using FreeSql.DataAnnotations;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Net.NetworkInformation;
+using System.Text;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.PostgreSQL
+{
+    public class PostgreSQLCodeFirstTest
+    {
+
+        [Fact]
+        public void 中文表_字段()
+        {
+            var sql = g.pgsql.CodeFirst.GetComparisonDDLStatements<测试中文表>();
+            g.pgsql.CodeFirst.SyncStructure<测试中文表>();
+
+            var item = new 测试中文表
+            {
+                标题 = "测试标题",
+                创建时间 = DateTime.Now
+            };
+            Assert.Equal(1, g.pgsql.Insert<测试中文表>().AppendData(item).ExecuteAffrows());
+            Assert.NotEqual(Guid.Empty, item.编号);
+            var item2 = g.pgsql.Select<测试中文表>().Where(a => a.编号 == item.编号).First();
+            Assert.NotNull(item2);
+            Assert.Equal(item.编号, item2.编号);
+            Assert.Equal(item.标题, item2.标题);
+        }
+        class 测试中文表
+        {
+            [Column(IsPrimary = true)]
+            public Guid 编号 { get; set; }
+
+            public string 标题 { get; set; }
+
+            public DateTime 创建时间 { get; set; }
+        }
+
+        [Fact]
+        public void AddUniques()
+        {
+            var sql = g.pgsql.CodeFirst.GetComparisonDDLStatements<AddUniquesInfo>();
+            g.pgsql.CodeFirst.SyncStructure<AddUniquesInfo>();
+        }
+        [Table(Name = "AddUniquesInfo", OldName = "AddUniquesInfo2")]
+        class AddUniquesInfo
+        {
+            public Guid id { get; set; }
+            [Column(Unique = "uk_phone")]
+            public string phone { get; set; }
+
+            [Column(Unique = "uk_group_index, uk_group_index22")]
+            public string group { get; set; }
+            [Column(Unique = "uk_group_index")]
+            public int index { get; set; }
+            [Column(Unique = "uk_group_index22")]
+            public string index22 { get; set; }
+        }
+
+        [Fact]
+        public void AddField()
+        {
+            var sql = g.pgsql.CodeFirst.GetComparisonDDLStatements<TopicAddField>();
+            g.pgsql.Select<TopicAddField>();
+
+            var id = g.pgsql.Insert<TopicAddField>().AppendData(new TopicAddField { }).ExecuteIdentity();
+        }
+
+        [Table(Name = "ccc.TopicAddField", OldName = "TopicAddField")]
+        public class TopicAddField
+        {
+            [Column(IsIdentity = true)]
+            public int Id { get; set; }
+
+            public string name { get; set; } = "xxx";
+
+            public int clicks { get; set; } = 10;
+            //public int name { get; set; } = 3000;
+
+            //[Column(DbType = "varchar(200) not null", OldName = "title")]
+            //public string title222 { get; set; } = "333";
+
+            //[Column(DbType = "varchar(200) not null")]
+            //public string title222333 { get; set; } = "xxx";
+
+            //[Column(DbType = "varchar(100) not null", OldName = "title122333aaa")]
+            //public string titleaaa { get; set; } = "fsdf";
+
+
+            [Column(IsIgnore = true)]
+            public DateTime ct { get; set; } = DateTime.Now;
+        }
+
+        [Fact]
+        public void GetComparisonDDLStatements()
+        {
+
+            var sql = g.pgsql.CodeFirst.GetComparisonDDLStatements<TableAllType>();
+            g.pgsql.Select<TableAllType>();
+        }
+
+        IInsert<TableAllType> insert => g.pgsql.Insert<TableAllType>();
+        ISelect<TableAllType> select => g.pgsql.Select<TableAllType>();
+
+        [Fact]
+        public void CurdAllField()
+        {
+            var item = new TableAllType { };
+            item.Id = (int)insert.AppendData(item).ExecuteIdentity();
+
+            var newitem = select.Where(a => a.Id == item.Id).ToOne();
+
+            var item2 = new TableAllType
+            {
+                testFieldBool = true,
+                testFieldBoolNullable = true,
+                testFieldByte = byte.MaxValue,
+                testFieldByteNullable = byte.MinValue,
+                testFieldBytes = Encoding.UTF8.GetBytes("我是中国人"),
+                testFieldDateTime = DateTime.Now,
+                testFieldDateTimeNullable = DateTime.Now.AddDays(-1),
+                testFieldDecimal = 999.99M,
+                testFieldDecimalNullable = 111.11M,
+                testFieldDouble = 888.88,
+                testFieldDoubleNullable = 222.22,
+                testFieldEnum1 = TableAllTypeEnumType1.e3,
+                testFieldEnum1Nullable = TableAllTypeEnumType1.e2,
+                testFieldEnum2 = TableAllTypeEnumType2.f2,
+                testFieldEnum2Nullable = TableAllTypeEnumType2.f3,
+                testFieldFloat = 777.77F,
+                testFieldFloatNullable = 333.33F,
+                testFieldGuid = Guid.NewGuid(),
+                testFieldGuidNullable = Guid.NewGuid(),
+                testFieldInt = int.MaxValue,
+                testFieldIntNullable = 123,
+                testFieldLong = long.MaxValue,
+                
+                testFieldSByte = sbyte.MaxValue,
+                testFieldSByteNullable = sbyte.MinValue,
+                testFieldShort = short.MaxValue,
+                testFieldShortNullable = short.MinValue,
+                testFieldString = "我是中国人String",
+                testFieldTimeSpan = TimeSpan.FromDays(1),
+                testFieldTimeSpanNullable = TimeSpan.FromSeconds(90),
+                testFieldUInt = uint.MaxValue,
+                testFieldUIntNullable = uint.MinValue,
+                testFieldULong = ulong.MaxValue,
+                testFieldULongNullable = ulong.MinValue,
+                testFieldUShort = ushort.MaxValue,
+                testFieldUShortNullable = ushort.MinValue,
+                testFielLongNullable = long.MinValue,
+            };
+
+            var sqlPar = insert.AppendData(item2).ToSql();
+            var sqlText = insert.AppendData(item2).NoneParameter().ToSql();
+            var item3NP = insert.AppendData(item2).NoneParameter().ExecuteInserted();
+
+            var item3 = insert.AppendData(item2).ExecuteInserted().First();
+            var newitem2 = select.Where(a => a.Id == item3.Id).ToOne();
+
+            var items = select.ToList();
+        }
+
+        [Table(Name = "tb_alltype")]
+        class TableAllType
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+
+            public bool testFieldBool { get; set; }
+            public sbyte testFieldSByte { get; set; }
+            public short testFieldShort { get; set; }
+            public int testFieldInt { get; set; }
+            public long testFieldLong { get; set; }
+            public byte testFieldByte { get; set; }
+            public ushort testFieldUShort { get; set; }
+            public uint testFieldUInt { get; set; }
+            public ulong testFieldULong { get; set; }
+            public double testFieldDouble { get; set; }
+            public float testFieldFloat { get; set; }
+            public decimal testFieldDecimal { get; set; }
+            public TimeSpan testFieldTimeSpan { get; set; }
+            public DateTime testFieldDateTime { get; set; }
+            public byte[] testFieldBytes { get; set; }
+            public string testFieldString { get; set; }
+            public Guid testFieldGuid { get; set; }
+
+            public bool? testFieldBoolNullable { get; set; }
+            public sbyte? testFieldSByteNullable { get; set; }
+            public short? testFieldShortNullable { get; set; }
+            public int? testFieldIntNullable { get; set; }
+            public long? testFielLongNullable { get; set; }
+            public byte? testFieldByteNullable { get; set; }
+            public ushort? testFieldUShortNullable { get; set; }
+            public uint? testFieldUIntNullable { get; set; }
+            public ulong? testFieldULongNullable { get; set; }
+            public double? testFieldDoubleNullable { get; set; }
+            public float? testFieldFloatNullable { get; set; }
+            public decimal? testFieldDecimalNullable { get; set; }
+            public TimeSpan? testFieldTimeSpanNullable { get; set; }
+            public DateTime? testFieldDateTimeNullable { get; set; }
+            public Guid? testFieldGuidNullable { get; set; }
+
+            public TableAllTypeEnumType1 testFieldEnum1 { get; set; }
+            public TableAllTypeEnumType1? testFieldEnum1Nullable { get; set; }
+            public TableAllTypeEnumType2 testFieldEnum2 { get; set; }
+            public TableAllTypeEnumType2? testFieldEnum2Nullable { get; set; }
+        }
+
+        public enum TableAllTypeEnumType1 { e1, e2, e3, e5 }
+        [Flags] public enum TableAllTypeEnumType2 { f1, f2, f3 }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/PostgreSQLDbFirstTest.cs

@@ -0,0 +1,25 @@
+using FreeSql.DataAnnotations;
+using System;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.PostgreSQL
+{
+    public class PostgreSQLDbFirstTest
+    {
+        [Fact]
+        public void GetDatabases()
+        {
+
+            var t1 = g.pgsql.DbFirst.GetDatabases();
+
+        }
+
+        [Fact]
+        public void GetTablesByDatabase()
+        {
+
+            var t2 = g.pgsql.DbFirst.GetTablesByDatabase(g.pgsql.DbFirst.GetDatabases()[1]);
+
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/PostgreSQLExpression/ConvertTest.cs

@@ -0,0 +1,169 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.PostgreSQLExpression
+{
+    public class ConvertTest
+    {
+
+        ISelect<Topic> select => g.pgsql.Select<Topic>();
+
+        [Table(Name = "tb_topic")]
+        class Topic
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int Clicks { get; set; }
+            public int TypeGuid { get; set; }
+            public TestTypeInfo Type { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+        class TestTypeInfo
+        {
+            public int Guid { get; set; }
+            public int ParentId { get; set; }
+            public TestTypeParentInfo Parent { get; set; }
+            public string Name { get; set; }
+        }
+        class TestTypeParentInfo
+        {
+            public int Id { get; set; }
+            public string Name { get; set; }
+
+            public List<TestTypeInfo> Types { get; set; }
+        }
+
+        [Fact]
+        public void ToBoolean()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => (Convert.ToBoolean(a.Clicks) ? 1 : 0) > 0).ToList());
+            data.Add(select.Where(a => (bool.Parse(a.Clicks.ToString()) ? 1 : 0) > 0).ToList());
+        }
+        [Fact]
+        public void ToByte()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToByte(a.Clicks % 255) > 0).ToList());
+            data.Add(select.Where(a => byte.Parse((a.Clicks % 255).ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void ToChar()
+        {
+            var data = new List<object>();
+            //data.Add(select.Where(a => Convert.ToChar(a.Clicks) == '1').ToList());
+            //data.Add(select.Where(a => char.Parse(a.Clicks.ToString()) == '1').ToList());
+        }
+        [Fact]
+        public void ToDateTime()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToDateTime(a.CreateTime.ToString()).Year > 0).ToList());
+            data.Add(select.Where(a => DateTime.Parse(a.CreateTime.ToString()).Year > 0).ToList());
+        }
+        [Fact]
+        public void ToDecimal()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToDecimal(a.Clicks) > 0).ToList());
+            data.Add(select.Where(a => decimal.Parse(a.Clicks.ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void ToDouble()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToDouble(a.Clicks) > 0).ToList());
+            data.Add(select.Where(a => double.Parse(a.Clicks.ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void ToInt16()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToInt16(a.Clicks) > 0).ToList());
+            data.Add(select.Where(a => short.Parse(a.Clicks.ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void ToInt32()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => (int)a.Clicks > 0).ToList());
+            data.Add(select.Where(a => Convert.ToInt32(a.Clicks) > 0).ToList());
+            data.Add(select.Where(a => int.Parse(a.Clicks.ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void ToInt64()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToInt64(a.Clicks) > 0).ToList());
+            data.Add(select.Where(a => long.Parse(a.Clicks.ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void ToSByte()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToSByte(a.Clicks % 128) > 0).ToList());
+            data.Add(select.Where(a => sbyte.Parse((a.Clicks % 128).ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void ToSingle()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToSingle(a.Clicks) > 0).ToList());
+            data.Add(select.Where(a => float.Parse(a.Clicks.ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void this_ToString()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToString(a.Clicks).Equals("")).ToList());
+            data.Add(select.Where(a => a.Clicks.ToString().Equals("")).ToList());
+        }
+        [Fact]
+        public void ToUInt16()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToUInt16(a.Clicks) > 0).ToList());
+            data.Add(select.Where(a => ushort.Parse(a.Clicks.ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void ToUInt32()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToUInt32(a.Clicks) > 0).ToList());
+            data.Add(select.Where(a => uint.Parse(a.Clicks.ToString()) > 0).ToList());
+        }
+        [Fact]
+        public void ToUInt64()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Convert.ToUInt64(a.Clicks) > 0).ToList());
+            data.Add(select.Where(a => ulong.Parse(a.Clicks.ToString()) > 0).ToList());
+        }
+
+        [Fact]
+        public void Guid_Parse()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Guid.Parse(Guid.Empty.ToString()) == Guid.Empty).ToList());
+        }
+
+        [Fact]
+        public void Guid_NewGuid()
+        {
+            var data = new List<object>();
+            //data.Add(select.OrderBy(a => Guid.NewGuid()).Limit(10).ToList());
+        }
+
+        [Fact]
+        public void Random()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => new Random().Next() > a.Clicks).Limit(10).ToList());
+            data.Add(select.Where(a => new Random().NextDouble() > a.Clicks).Limit(10).ToList());
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/PostgreSQLExpression/DateTimeTest.cs

@@ -0,0 +1,706 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.PostgreSQLExpression
+{
+    public class DateTimeTest
+    {
+
+        ISelect<Topic> select => g.pgsql.Select<Topic>();
+
+        [Table(Name = "tb_topic111333")]
+        class Topic
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int Clicks { get; set; }
+            public int TypeGuid { get; set; }
+            public TestTypeInfo Type { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+        [Table(Name = "TestTypeInfo333")]
+        class TestTypeInfo
+        {
+            [Column(IsIdentity = true)]
+            public int Guid { get; set; }
+            public int ParentId { get; set; }
+            public TestTypeParentInfo Parent { get; set; }
+            public string Name { get; set; }
+            public DateTime Time { get; set; }
+        }
+        [Table(Name = "TestTypeParentInfo23123")]
+        class TestTypeParentInfo
+        {
+            public int Id { get; set; }
+            public string Name { get; set; }
+
+            public List<TestTypeInfo> Types { get; set; }
+            public DateTime Time2 { get; set; }
+        }
+        [Fact]
+        public void Now()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Date == DateTime.Now.Date).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (cast(date_format(a.`CreateTime`, '%Y-%m-%d') as datetime) = cast(date_format(now(), '%Y-%m-%d') as datetime))
+        }
+        [Fact]
+        public void UtcNow()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Date == DateTime.UtcNow.Date).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (cast(date_format(a.`CreateTime`, '%Y-%m-%d') as datetime) = cast(date_format(utc_timestamp(), '%Y-%m-%d') as datetime))
+        }
+        [Fact]
+        public void MinValue()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Date == DateTime.MinValue.Date).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (cast(date_format(a.`CreateTime`, '%Y-%m-%d') as datetime) = cast(date_format(cast('0001/1/1 0:00:00' as datetime), '%Y-%m-%d') as datetime))
+        }
+        [Fact]
+        public void MaxValue()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Date == DateTime.MaxValue.Date).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (cast(date_format(a.`CreateTime`, '%Y-%m-%d') as datetime) = cast(date_format(cast('9999/12/31 23:59:59' as datetime), '%Y-%m-%d') as datetime))
+        }
+        [Fact]
+        public void Date()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Date == DateTime.Now.Date).ToList());
+            data.Add(select.Where(a => a.Type.Time.Date > DateTime.Now.Date).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Date > DateTime.Now.Date).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (cast(date_format(a.`CreateTime`, '%Y-%m-%d') as datetime) = cast(date_format(now(), '%Y-%m-%d') as datetime));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (cast(date_format(a__Type.`Time`, '%Y-%m-%d') as datetime) > cast(date_format(now(), '%Y-%m-%d') as datetime));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (cast(date_format(a__Type__Parent.`Time2`, '%Y-%m-%d') as datetime) > cast(date_format(now(), '%Y-%m-%d') as datetime));
+            data.Add(select.Where(a => DateTime.Now.Subtract(a.CreateTime.Date).TotalSeconds > 0).ToList());
+            data.Add(select.Where(a => DateTime.Now.Subtract(a.Type.Time.Date).TotalSeconds > 0).ToList());
+            data.Add(select.Where(a => DateTime.Now.Subtract(a.Type.Parent.Time2.Date).TotalSeconds > 0).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (((timestampdiff(microsecond, cast(date_format(a.`CreateTime`, '%Y-%m-%d') as datetime), now())) / 1000000) > 0);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (((timestampdiff(microsecond, cast(date_format(a__Type.`Time`, '%Y-%m-%d') as datetime), now())) / 1000000) > 0);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (((timestampdiff(microsecond, cast(date_format(a__Type__Parent.`Time2`, '%Y-%m-%d') as datetime), now())) / 1000000) > 0)
+        }
+        [Fact]
+        public void TimeOfDay()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay == DateTime.Now.TimeOfDay).ToList());
+            data.Add(select.Where(a => a.Type.Time.TimeOfDay > DateTime.Now.TimeOfDay).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.TimeOfDay > DateTime.Now.TimeOfDay).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE ((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000) = (timestampdiff(microsecond, date_format(now(), '1970-1-1 %H:%i:%s.%f'), now()) + 62135596800000000));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE ((timestampdiff(microsecond, date_format(a__Type.`Time`, '1970-1-1 %H:%i:%s.%f'), a__Type.`Time`) + 62135596800000000) > (timestampdiff(microsecond, date_format(now(), '1970-1-1 %H:%i:%s.%f'), now()) + 62135596800000000));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE ((timestampdiff(microsecond, date_format(a__Type__Parent.`Time2`, '1970-1-1 %H:%i:%s.%f'), a__Type__Parent.`Time2`) + 62135596800000000) > (timestampdiff(microsecond, date_format(now(), '1970-1-1 %H:%i:%s.%f'), now()) + 62135596800000000))
+        }
+        [Fact]
+        public void DayOfWeek()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.DayOfWeek > DateTime.Now.DayOfWeek).ToList());
+            data.Add(select.Where(a => a.Type.Time.DayOfWeek > DateTime.Now.DayOfWeek).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.DayOfWeek > DateTime.Now.DayOfWeek).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE ((dayofweek(a.`CreateTime`) - 1) > (dayofweek(now()) - 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE ((dayofweek(a__Type.`Time`) - 1) > (dayofweek(now()) - 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE ((dayofweek(a__Type__Parent.`Time2`) - 1) > (dayofweek(now()) - 1))
+        }
+        [Fact]
+        public void Day()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Day > DateTime.Now.Day).ToList());
+            data.Add(select.Where(a => a.Type.Time.Day > DateTime.Now.Day).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Day > DateTime.Now.Day).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (dayofmonth(a.`CreateTime`) > dayofmonth(now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (dayofmonth(a__Type.`Time`) > dayofmonth(now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (dayofmonth(a__Type__Parent.`Time2`) > dayofmonth(now()))
+        }
+        [Fact]
+        public void DayOfYear()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.DayOfYear > DateTime.Now.DayOfYear).ToList());
+            data.Add(select.Where(a => a.Type.Time.DayOfYear > DateTime.Now.DayOfYear).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.DayOfYear > DateTime.Now.DayOfYear).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (dayofyear(a.`CreateTime`) > dayofyear(now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (dayofyear(a__Type.`Time`) > dayofyear(now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (dayofyear(a__Type__Parent.`Time2`) > dayofyear(now()))
+        }
+        [Fact]
+        public void Month()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Month > DateTime.Now.Month).ToList());
+            data.Add(select.Where(a => a.Type.Time.Month > DateTime.Now.Month).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Month > DateTime.Now.Month).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (month(a.`CreateTime`) > month(now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (month(a__Type.`Time`) > month(now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (month(a__Type__Parent.`Time2`) > month(now()))
+        }
+        [Fact]
+        public void Year()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Year > DateTime.Now.Year).ToList());
+            data.Add(select.Where(a => a.Type.Time.Year > DateTime.Now.Year).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Year > DateTime.Now.Year).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (year(a.`CreateTime`) > year(now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (year(a__Type.`Time`) > year(now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (year(a__Type__Parent.`Time2`) > year(now()))
+        }
+        [Fact]
+        public void Hour()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Hour > DateTime.Now.Hour).ToList());
+            data.Add(select.Where(a => a.Type.Time.Hour > DateTime.Now.Hour).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Hour > DateTime.Now.Hour).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (hour(a.`CreateTime`) > hour(now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (hour(a__Type.`Time`) > hour(now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (hour(a__Type__Parent.`Time2`) > hour(now()))
+        }
+        [Fact]
+        public void Minute()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Minute > DateTime.Now.Minute).ToList());
+            data.Add(select.Where(a => a.Type.Time.Minute > DateTime.Now.Minute).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Minute > DateTime.Now.Minute).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (minute(a.`CreateTime`) > minute(now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (minute(a__Type.`Time`) > minute(now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (minute(a__Type__Parent.`Time2`) > minute(now()))
+        }
+        [Fact]
+        public void Second()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Second > DateTime.Now.Second).ToList());
+            data.Add(select.Where(a => a.Type.Time.Second > DateTime.Now.Second).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Second > DateTime.Now.Second).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (second(a.`CreateTime`) > second(now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (second(a__Type.`Time`) > second(now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (second(a__Type__Parent.`Time2`) > second(now()))
+        }
+        [Fact]
+        public void Millisecond()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Millisecond > DateTime.Now.Millisecond).ToList());
+            data.Add(select.Where(a => a.Type.Time.Millisecond > DateTime.Now.Millisecond).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Millisecond > DateTime.Now.Millisecond).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (floor(microsecond(a.`CreateTime`) / 1000) > floor(microsecond(now()) / 1000));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (floor(microsecond(a__Type.`Time`) / 1000) > floor(microsecond(now()) / 1000));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (floor(microsecond(a__Type__Parent.`Time2`) / 1000) > floor(microsecond(now()) / 1000))
+        }
+        [Fact]
+        public void Ticks()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Ticks > DateTime.Now.Ticks).ToList());
+            data.Add(select.Where(a => a.Type.Time.Ticks > DateTime.Now.Ticks).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Ticks > DateTime.Now.Ticks).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE ((timestampdiff(microsecond, '1970-1-1', a.`CreateTime`) * 10 + 621355968000000000) > (timestampdiff(microsecond, '1970-1-1', now()) * 10 + 621355968000000000));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE ((timestampdiff(microsecond, '1970-1-1', a__Type.`Time`) * 10 + 621355968000000000) > (timestampdiff(microsecond, '1970-1-1', now()) * 10 + 621355968000000000));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE ((timestampdiff(microsecond, '1970-1-1', a__Type__Parent.`Time2`) * 10 + 621355968000000000) > (timestampdiff(microsecond, '1970-1-1', now()) * 10 + 621355968000000000))
+        }
+        [Fact]
+        public void Add()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Add(TimeSpan.FromDays(1)) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Time.Add(TimeSpan.FromDays(1)) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Add(TimeSpan.FromDays(1)) > DateTime.Now).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (date_add(a.`CreateTime`, interval ((1 * 86400000000)) microsecond) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (date_add(a__Type.`Time`, interval ((1 * 86400000000)) microsecond) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (date_add(a__Type__Parent.`Time2`, interval ((1 * 86400000000)) microsecond) > now())
+        }
+        [Fact]
+        public void AddDays()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.AddDays(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddDays(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddDays(1) > DateTime.Now).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (date_add(a.`CreateTime`, interval (1) day) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (date_add(a__Type.`Time`, interval (1) day) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (date_add(a__Type__Parent.`Time2`, interval (1) day) > now())
+        }
+        [Fact]
+        public void AddHours()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.AddHours(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddHours(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddHours(1) > DateTime.Now).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (date_add(a.`CreateTime`, interval (1) hour) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (date_add(a__Type.`Time`, interval (1) hour) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (date_add(a__Type__Parent.`Time2`, interval (1) hour) > now())
+        }
+        [Fact]
+        public void AddMilliseconds()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.AddMilliseconds(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddMilliseconds(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddMilliseconds(1) > DateTime.Now).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (date_add(a.`CreateTime`, interval (1) * 1000 microsecond) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (date_add(a__Type.`Time`, interval (1) * 1000 microsecond) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (date_add(a__Type__Parent.`Time2`, interval (1) * 1000 microsecond) > now())
+        }
+        [Fact]
+        public void AddMinutes()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.AddMinutes(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddMinutes(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddMinutes(1) > DateTime.Now).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (date_add(a.`CreateTime`, interval (1) minute) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (date_add(a__Type.`Time`, interval (1) minute) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (date_add(a__Type__Parent.`Time2`, interval (1) minute) > now())
+        }
+        [Fact]
+        public void AddMonths()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.AddMonths(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddMonths(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddMonths(1) > DateTime.Now).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (date_add(a.`CreateTime`, interval (1) month) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (date_add(a__Type.`Time`, interval (1) month) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (date_add(a__Type__Parent.`Time2`, interval (1) month) > now())
+        }
+        [Fact]
+        public void AddSeconds()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.AddSeconds(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddSeconds(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddSeconds(1) > DateTime.Now).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (date_add(a.`CreateTime`, interval (1) second) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (date_add(a__Type.`Time`, interval (1) second) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (date_add(a__Type__Parent.`Time2`, interval (1) second) > now())
+        }
+        [Fact]
+        public void AddTicks()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.AddTicks(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddTicks(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddTicks(1) > DateTime.Now).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (date_add(a.`CreateTime`, interval (1) / 10 microsecond) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (date_add(a__Type.`Time`, interval (1) / 10 microsecond) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (date_add(a__Type__Parent.`Time2`, interval (1) / 10 microsecond) > now())
+        }
+        [Fact]
+        public void AddYears()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.AddYears(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddYears(1) > DateTime.Now).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddYears(1) > DateTime.Now).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (date_add(a.`CreateTime`, interval (1) year) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (date_add(a__Type.`Time`, interval (1) year) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (date_add(a__Type__Parent.`Time2`, interval (1) year) > now())
+        }
+        [Fact]
+        public void Subtract()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.Subtract(DateTime.Now).TotalSeconds > 0).ToList());
+            data.Add(select.Where(a => a.Type.Time.Subtract(DateTime.Now).TotalSeconds > 0).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Subtract(DateTime.Now).TotalSeconds > 0).ToList());
+            //SELECT a."id", a."clicks", a."typeguid", a."title", a."createtime" 
+            //FROM "tb_topic111333" a 
+            //WHERE ((((extract(epoch from (a."createtime")::timestamp-(current_timestamp)::timestamp)*1000000))/1000000) > 0)
+
+            //SELECT a."id", a."clicks", a."typeguid", a__Type."guid", a__Type."parentid", a__Type."name", a__Type."time", a."title", a."createtime" 
+            //FROM "tb_topic111333" a 
+            //LEFT JOIN "testtypeinfo333" a__Type ON a__Type."guid" = a."typeguid" 
+            //WHERE ((((extract(epoch from (a__Type."time")::timestamp-(current_timestamp)::timestamp)*1000000))/1000000) > 0)
+
+            //SELECT a."id", a."clicks", a."typeguid", a__Type."guid", a__Type."parentid", a__Type."name", a__Type."time", a."title", a."createtime" 
+            //FROM "tb_topic111333" a 
+            //LEFT JOIN "testtypeinfo333" a__Type ON a__Type."guid" = a."typeguid" 
+            //LEFT JOIN "testtypeparentinfo23123" a__Type__Parent ON a__Type__Parent."id" = a__Type."parentid" 
+            //WHERE ((((extract(epoch from (a__Type__Parent."time2")::timestamp-(current_timestamp)::timestamp)*1000000))/1000000) > 0)
+            data.Add(select.Where(a => a.CreateTime.Subtract(TimeSpan.FromDays(1)) > a.CreateTime).ToList());
+            data.Add(select.Where(a => a.Type.Time.Subtract(TimeSpan.FromDays(1)) > a.CreateTime).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.Subtract(TimeSpan.FromDays(1)) > a.CreateTime).ToList());
+            //SELECT a."id", a."clicks", a."typeguid", a."title", a."createtime" 
+            //FROM "tb_topic111333" a 
+            //WHERE (((a."createtime")::timestamp-((((1)*86400000000))||' microseconds')::interval) > a."createtime")
+
+            //SELECT a."id", a."clicks", a."typeguid", a__Type."guid", a__Type."parentid", a__Type."name", a__Type."time", a."title", a."createtime" 
+            //FROM "tb_topic111333" a 
+            //LEFT JOIN "testtypeinfo333" a__Type ON a__Type."guid" = a."typeguid" 
+            //WHERE (((a__Type."time")::timestamp-((((1)*86400000000))||' microseconds')::interval) > a."createtime")
+
+            //SELECT a."id", a."clicks", a."typeguid", a__Type."guid", a__Type."parentid", a__Type."name", a__Type."time", a."title", a."createtime" 
+            //FROM "tb_topic111333" a 
+            //LEFT JOIN "testtypeinfo333" a__Type ON a__Type."guid" = a."typeguid" 
+            //LEFT JOIN "testtypeparentinfo23123" a__Type__Parent ON a__Type__Parent."id" = a__Type."parentid" 
+            //WHERE (((a__Type__Parent."time2")::timestamp-((((1)*86400000000))||' microseconds')::interval) > a."createtime")
+        }
+        [Fact]
+        public void Á½¸öÈÕÆÚÏà¼õ_Ч¹ûͬSubtract()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => (a.CreateTime - DateTime.Now).TotalSeconds > 0).ToList());
+            data.Add(select.Where(a => (a.Type.Time - DateTime.Now).TotalSeconds > 0).ToList());
+            data.Add(select.Where(a => (a.Type.Parent.Time2 - DateTime.Now).TotalSeconds > 0).ToList());
+            //SELECT a."id", a."clicks", a."typeguid", a."title", a."createtime" 
+            //FROM "tb_topic111333" a 
+            //WHERE ((((extract(epoch from (a."createtime")::timestamp-(current_timestamp)::timestamp)*1000000))/1000000) > 0)
+
+            //SELECT a."id", a."clicks", a."typeguid", a__Type."guid", a__Type."parentid", a__Type."name", a__Type."time", a."title", a."createtime" 
+            //FROM "tb_topic111333" a 
+            //LEFT JOIN "testtypeinfo333" a__Type ON a__Type."guid" = a."typeguid" 
+            //WHERE ((((extract(epoch from (a__Type."time")::timestamp-(current_timestamp)::timestamp)*1000000))/1000000) > 0)
+
+            //SELECT a."id", a."clicks", a."typeguid", a__Type."guid", a__Type."parentid", a__Type."name", a__Type."time", a."title", a."createtime" 
+            //FROM "tb_topic111333" a 
+            //LEFT JOIN "testtypeinfo333" a__Type ON a__Type."guid" = a."typeguid" 
+            //LEFT JOIN "testtypeparentinfo23123" a__Type__Parent ON a__Type__Parent."id" = a__Type."parentid" 
+            //WHERE ((((extract(epoch from (a__Type__Parent."time2")::timestamp-(current_timestamp)::timestamp)*1000000))/1000000) > 0)
+            data.Add(select.Where(a => (a.CreateTime - TimeSpan.FromDays(1)) > a.CreateTime).ToList());
+            data.Add(select.Where(a => (a.Type.Time - TimeSpan.FromDays(1)) > a.CreateTime).ToList());
+            data.Add(select.Where(a => (a.Type.Parent.Time2 - TimeSpan.FromDays(1)) > a.CreateTime).ToList());
+            //SELECT a."id", a."clicks", a."typeguid", a."title", a."createtime" 
+            //FROM "tb_topic111333" a 
+            //WHERE (((a."createtime")::timestamp-((((1)*86400000000))||' microseconds')::interval) > a."createtime")
+
+            //SELECT a."id", a."clicks", a."typeguid", a__Type."guid", a__Type."parentid", a__Type."name", a__Type."time", a."title", a."createtime" 
+            //FROM "tb_topic111333" a 
+            //LEFT JOIN "testtypeinfo333" a__Type ON a__Type."guid" = a."typeguid" 
+            //WHERE (((a__Type."time")::timestamp-((((1)*86400000000))||' microseconds')::interval) > a."createtime")
+
+            //SELECT a."id", a."clicks", a."typeguid", a__Type."guid", a__Type."parentid", a__Type."name", a__Type."time", a."title", a."createtime" 
+            //FROM "tb_topic111333" a 
+            //LEFT JOIN "testtypeinfo333" a__Type ON a__Type."guid" = a."typeguid" 
+            //LEFT JOIN "testtypeparentinfo23123" a__Type__Parent ON a__Type__Parent."id" = a__Type."parentid" 
+            //WHERE (((a__Type__Parent."time2")::timestamp-((((1)*86400000000))||' microseconds')::interval) > a."createtime")
+        }
+        [Fact]
+        public void this_Equals()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.AddYears(1).Equals(DateTime.Now)).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddYears(1).Equals(DateTime.Now)).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddYears(1).Equals(DateTime.Now)).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE ((date_add(a.`CreateTime`, interval (1) year) = now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE ((date_add(a__Type.`Time`, interval (1) year) = now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE ((date_add(a__Type__Parent.`Time2`, interval (1) year) = now()))
+        }
+        [Fact]
+        public void this_ToString()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.ToString().Equals(DateTime.Now)).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddYears(1).ToString().Equals(DateTime.Now)).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddYears(1).ToString().Equals(DateTime.Now)).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE ((date_format(a.`CreateTime`, '%Y-%m-%d %H:%i:%s.%f') = now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE ((date_format(date_add(a__Type.`Time`, interval (1) year), '%Y-%m-%d %H:%i:%s.%f') = now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE ((date_format(date_add(a__Type__Parent.`Time2`, interval (1) year), '%Y-%m-%d %H:%i:%s.%f') = now()))
+        }
+
+        [Fact]
+        public void DateTime_Compare()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.CompareTo(DateTime.Now) == 0).ToList());
+            data.Add(select.Where(a => a.Type.Time.AddYears(1).CompareTo(DateTime.Now) == 0).ToList());
+            data.Add(select.Where(a => a.Type.Parent.Time2.AddYears(1).CompareTo(DateTime.Now) == 0).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (((a.`CreateTime`) - (now())) = 0);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (((date_add(a__Type.`Time`, interval (1) year)) - (now())) = 0);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (((date_add(a__Type__Parent.`Time2`, interval (1) year)) - (now())) = 0)
+        }
+        [Fact]
+        public void DateTime_DaysInMonth()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => DateTime.DaysInMonth(a.CreateTime.Year, a.CreateTime.Month) > 30).ToList());
+            data.Add(select.Where(a => DateTime.DaysInMonth(a.Type.Time.Year, a.Type.Time.Month) > 30).ToList());
+            data.Add(select.Where(a => DateTime.DaysInMonth(a.Type.Parent.Time2.Year, a.Type.Parent.Time2.Month) > 30).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (dayofmonth(last_day(concat(year(a.`CreateTime`), month(a.`CreateTime`), '-01'))) > 30);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (dayofmonth(last_day(concat(year(a__Type.`Time`), month(a__Type.`Time`), '-01'))) > 30);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (dayofmonth(last_day(concat(year(a__Type__Parent.`Time2`), month(a__Type__Parent.`Time2`), '-01'))) > 30)
+        }
+        [Fact]
+        public void DateTime_Equals()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => DateTime.Equals(a.CreateTime.AddYears(1), DateTime.Now)).ToList());
+            data.Add(select.Where(a => DateTime.Equals(a.Type.Time.AddYears(1), DateTime.Now)).ToList());
+            data.Add(select.Where(a => DateTime.Equals(a.Type.Parent.Time2.AddYears(1), DateTime.Now)).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE ((date_add(a.`CreateTime`, interval (1) year) = now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE ((date_add(a__Type.`Time`, interval (1) year) = now()));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE ((date_add(a__Type__Parent.`Time2`, interval (1) year) = now()))
+        }
+        [Fact]
+        public void DateTime_IsLeapYear()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => DateTime.IsLeapYear(a.CreateTime.Year)).ToList());
+            data.Add(select.Where(a => DateTime.IsLeapYear(a.Type.Time.AddYears(1).Year)).ToList());
+            data.Add(select.Where(a => DateTime.IsLeapYear(a.Type.Parent.Time2.AddYears(1).Year)).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (((year(a.`CreateTime`)) % 4 = 0 AND (year(a.`CreateTime`)) % 100 <> 0 OR (year(a.`CreateTime`)) % 400 = 0));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (((year(date_add(a__Type.`Time`, interval (1) year))) % 4 = 0 AND (year(date_add(a__Type.`Time`, interval (1) year))) % 100 <> 0 OR (year(date_add(a__Type.`Time`, interval (1) year))) % 400 = 0));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (((year(date_add(a__Type__Parent.`Time2`, interval (1) year))) % 4 = 0 AND (year(date_add(a__Type__Parent.`Time2`, interval (1) year))) % 100 <> 0 OR (year(date_add(a__Type__Parent.`Time2`, interval (1) year))) % 400 = 0))
+        }
+        [Fact]
+        public void DateTime_Parse()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => DateTime.Parse(a.CreateTime.ToString()) > DateTime.Now).ToList());
+            data.Add(select.Where(a => DateTime.Parse(a.Type.Time.AddYears(1).ToString()) > DateTime.Now).ToList());
+            data.Add(select.Where(a => DateTime.Parse(a.Type.Parent.Time2.AddYears(1).ToString()) > DateTime.Now).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic111333` a 
+            //WHERE (cast(date_format(a.`CreateTime`, '%Y-%m-%d %H:%i:%s.%f') as datetime) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type 
+            //WHERE (cast(date_format(date_add(a__Type.`Time`, interval (1) year), '%Y-%m-%d %H:%i:%s.%f') as datetime) > now());
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a__Type.`Time` as7, a.`Title` as8, a.`CreateTime` as9 
+            //FROM `tb_topic111333` a, `TestTypeInfo333` a__Type, `TestTypeParentInfo23123` a__Type__Parent 
+            //WHERE (cast(date_format(date_add(a__Type__Parent.`Time2`, interval (1) year), '%Y-%m-%d %H:%i:%s.%f') as datetime) > now())
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/PostgreSQLExpression/MathTest.cs

@@ -0,0 +1,156 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.PostgreSQLExpression
+{
+    public class MathTest
+    {
+
+        ISelect<Topic> select => g.pgsql.Select<Topic>();
+
+        [Table(Name = "tb_topic")]
+        class Topic
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int Clicks { get; set; }
+            public int TypeGuid { get; set; }
+            public TestTypeInfo Type { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+        class TestTypeInfo
+        {
+            public int Guid { get; set; }
+            public int ParentId { get; set; }
+            public TestTypeParentInfo Parent { get; set; }
+            public string Name { get; set; }
+        }
+        class TestTypeParentInfo
+        {
+            public int Id { get; set; }
+            public string Name { get; set; }
+
+            public List<TestTypeInfo> Types { get; set; }
+        }
+
+        [Fact]
+        public void PI()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.PI + a.Clicks > 0).ToList());
+        }
+        [Fact]
+        public void Abs()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Abs(-a.Clicks) > 0).ToList());
+        }
+        [Fact]
+        public void Sign()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Sign(-a.Clicks) > 0).ToList());
+        }
+        [Fact]
+        public void Floor()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Floor(a.Clicks + 0.5) == a.Clicks).ToList());
+        }
+        [Fact]
+        public void Ceiling()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Ceiling(a.Clicks + 0.5) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Round()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Round(a.Clicks + 0.5) == a.Clicks).ToList());
+            data.Add(select.Where(a => Math.Round(a.Clicks + 0.5, 1) > a.Clicks).ToList());
+        }
+        [Fact]
+        public void Exp()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Exp(1) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Log()
+        {
+            var data = new List<object>();
+            //data.Add(select.Where(a => Math.Log(a.Clicks + 0.5) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Log10()
+        {
+            var data = new List<object>();
+            //data.Add(select.Where(a => Math.Log10(a.Clicks + 0.5) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Pow()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Pow(2, a.Clicks) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Sqrt()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Sqrt(Math.Pow(2, a.Clicks)) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Cos()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Cos(Math.Pow(2, a.Clicks)) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Sin()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Sin(Math.Pow(2, a.Clicks)) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Tan()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Tan(Math.Pow(2, a.Clicks)) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Acos()
+        {
+            var data = new List<object>();
+            //data.Add(select.Where(a => Math.Acos(Math.Pow(2, a.Clicks)) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Asin()
+        {
+            var data = new List<object>();
+            //data.Add(select.Where(a => Math.Asin(Math.Pow(2, a.Clicks)) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Atan()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Atan(Math.Pow(2, a.Clicks)) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Atan2()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Atan2(2, a.Clicks) == a.Clicks + 1).ToList());
+        }
+        [Fact]
+        public void Truncate()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => Math.Truncate(a.Clicks * 1.0 / 3) == a.Clicks + 1).ToList());
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/PostgreSQLExpression/OtherTest.cs

@@ -0,0 +1,139 @@
+using FreeSql.DataAnnotations;
+using Newtonsoft.Json.Linq;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Net;
+using System.Net.NetworkInformation;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.PostgreSQLExpression
+{
+    public class OtherTest
+    {
+
+        ISelect<TableAllType> select => g.pgsql.Select<TableAllType>();
+
+        public OtherTest()
+        {
+        }
+
+        [Fact]
+        public void Div()
+        {
+            var t1 = select.Where(a => a.testFieldInt / 3 > 3).Limit(10).ToList();
+            var t2 = select.Where(a => a.testFieldLong / 3 > 3).Limit(10).ToList();
+            var t3 = select.Where(a => a.testFieldShort / 3 > 3).Limit(10).ToList();
+
+            var t4 = select.Where(a => a.testFieldInt / 3.0 > 3).Limit(10).ToList();
+            var t5 = select.Where(a => a.testFieldLong / 3.0 > 3).Limit(10).ToList();
+            var t6 = select.Where(a => a.testFieldShort / 3.0 > 3).Limit(10).ToList();
+
+            var t7 = select.Where(a => a.testFieldDouble / 3 > 3).Limit(10).ToList();
+            var t8 = select.Where(a => a.testFieldDecimal / 3 > 3).Limit(10).ToList();
+            var t9 = select.Where(a => a.testFieldFloat / 3 > 3).Limit(10).ToList();
+        }
+
+        [Fact]
+        public void Boolean()
+        {
+            var t1 = select.Where(a => a.testFieldBool == true).ToList();
+            var t2 = select.Where(a => a.testFieldBool != true).ToList();
+            var t3 = select.Where(a => a.testFieldBool == false).ToList();
+            var t4 = select.Where(a => !a.testFieldBool).ToList();
+            var t5 = select.Where(a => a.testFieldBool).ToList();
+
+            var t11 = select.Where(a => a.testFieldBoolNullable == true).ToList();
+            var t22 = select.Where(a => a.testFieldBoolNullable != true).ToList();
+            var t33 = select.Where(a => a.testFieldBoolNullable == false).ToList();
+            var t44 = select.Where(a => !a.testFieldBoolNullable.Value).ToList();
+            var t55 = select.Where(a => a.testFieldBoolNullable.Value).ToList();
+        }
+
+        [Fact]
+        public void Array()
+        {
+            //g.pgsql.Aop.CurdAfter = (s, e) => {
+            //	Trace.WriteLine(e.CurdType + ": " + e.ElapsedMilliseconds + "ms " + e.Sql.Replace("\n", ""));
+            //};
+            IEnumerable<int> testlinqlist = new List<int>(new[] { 1, 2, 3 });
+            var testlinq = select.Where(a => testlinqlist.Contains(a.testFieldInt)).ToList();
+
+            //in not in
+            var sql111 = select.Where(a => new[] { 1, 2, 3 }.Contains(a.testFieldInt)).ToList();
+            var sql112 = select.Where(a => new[] { 1, 2, 3 }.Contains(a.testFieldInt) == false).ToList();
+            var sql113 = select.Where(a => !new[] { 1, 2, 3 }.Contains(a.testFieldInt)).ToList();
+
+            var inarray = new[] { 1, 2, 3 };
+            var sql1111 = select.Where(a => inarray.Contains(a.testFieldInt)).ToSql();
+            var sql1122 = select.Where(a => inarray.Contains(a.testFieldInt) == false).ToSql();
+            var sql1133 = select.Where(a => !inarray.Contains(a.testFieldInt)).ToSql();
+
+            //in not in
+            var sql11111 = select.Where(a => new List<int>() { 1, 2, 3 }.Contains(a.testFieldInt)).ToList();
+            var sql11222 = select.Where(a => new List<int>() { 1, 2, 3 }.Contains(a.testFieldInt) == false).ToList();
+            var sql11333 = select.Where(a => !new List<int>() { 1, 2, 3 }.Contains(a.testFieldInt)).ToList();
+
+            var sql11111a = select.Where(a => new List<int>(new[] { 1, 2, 3 }).Contains(a.testFieldInt)).ToList();
+            var sql11222b = select.Where(a => new List<int>(new[] { 1, 2, 3 }).Contains(a.testFieldInt) == false).ToList();
+            var sql11333c = select.Where(a => !new List<int>(new[] { 1, 2, 3 }).Contains(a.testFieldInt)).ToList();
+
+            var inarray2 = new List<int>() { 1, 2, 3 };
+            var sql111111 = select.Where(a => inarray.Contains(a.testFieldInt)).ToList();
+            var sql112222 = select.Where(a => inarray.Contains(a.testFieldInt) == false).ToList();
+            var sql113333 = select.Where(a => !inarray.Contains(a.testFieldInt)).ToList();
+        }
+        
+
+        [Table(Name = "tb_alltype")]
+        class TableAllType
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+
+            public bool testFieldBool { get; set; }
+            public sbyte testFieldSByte { get; set; }
+            public short testFieldShort { get; set; }
+            public int testFieldInt { get; set; }
+            public long testFieldLong { get; set; }
+            public byte testFieldByte { get; set; }
+            public ushort testFieldUShort { get; set; }
+            public uint testFieldUInt { get; set; }
+            public ulong testFieldULong { get; set; }
+            public double testFieldDouble { get; set; }
+            public float testFieldFloat { get; set; }
+            public decimal testFieldDecimal { get; set; }
+            public TimeSpan testFieldTimeSpan { get; set; }
+            public DateTime testFieldDateTime { get; set; }
+            public byte[] testFieldBytes { get; set; }
+            public string testFieldString { get; set; }
+            public Guid testFieldGuid { get; set; }
+
+            public bool? testFieldBoolNullable { get; set; }
+            public sbyte? testFieldSByteNullable { get; set; }
+            public short? testFieldShortNullable { get; set; }
+            public int? testFieldIntNullable { get; set; }
+            public long? testFielLongNullable { get; set; }
+            public byte? testFieldByteNullable { get; set; }
+            public ushort? testFieldUShortNullable { get; set; }
+            public uint? testFieldUIntNullable { get; set; }
+            public ulong? testFieldULongNullable { get; set; }
+            public double? testFieldDoubleNullable { get; set; }
+            public float? testFieldFloatNullable { get; set; }
+            public decimal? testFieldDecimalNullable { get; set; }
+            public TimeSpan? testFieldTimeSpanNullable { get; set; }
+            public DateTime? testFieldDateTimeNullable { get; set; }
+            public Guid? testFieldGuidNullable { get; set; }
+
+            public TableAllTypeEnumType1 testFieldEnum1 { get; set; }
+            public TableAllTypeEnumType1? testFieldEnum1Nullable { get; set; }
+            public TableAllTypeEnumType2 testFieldEnum2 { get; set; }
+            public TableAllTypeEnumType2? testFieldEnum2Nullable { get; set; }
+        }
+
+        public enum TableAllTypeEnumType1 { e1, e2, e3, e5 }
+        [Flags] public enum TableAllTypeEnumType2 { f1, f2, f3 }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/PostgreSQLExpression/StringTest.cs

@@ -0,0 +1,728 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.PostgreSQLExpression
+{
+    public class StringTest
+    {
+
+        ISelect<Topic> select => g.pgsql.Select<Topic>();
+
+        [Table(Name = "tb_topic")]
+        class Topic
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int Clicks { get; set; }
+            public int TypeGuid { get; set; }
+            public TestTypeInfo Type { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+        class TestTypeInfo
+        {
+            [Column(IsIdentity = true)]
+            public int Guid { get; set; }
+            public int ParentId { get; set; }
+            public TestTypeParentInfo Parent { get; set; }
+            public string Name { get; set; }
+        }
+        class TestTypeParentInfo
+        {
+            public int Id { get; set; }
+            public string Name { get; set; }
+
+            public List<TestTypeInfo> Types { get; set; }
+        }
+        class TestEqualsGuid
+        {
+            public Guid id { get; set; }
+        }
+
+        [Fact]
+        public void Equals__()
+        {
+            var list = new List<object>();
+            list.Add(select.Where(a => a.Title.Equals("aaa")).ToList());
+            list.Add(g.pgsql.Select<TestEqualsGuid>().Where(a => a.id.Equals(Guid.Empty)).ToList());
+        }
+
+
+        [Fact]
+        public void Empty()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => (a.Title ?? "") == string.Empty).ToSql());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (ifnull(a.`Title`, '') = '')
+        }
+
+        [Fact]
+        public void StartsWith()
+        {
+            var list = new List<object>();
+            list.Add(select.Where(a => a.Title.StartsWith("aaa")).ToList());
+            list.Add(select.Where(a => a.Title.StartsWith(a.Title)).ToList());
+            list.Add(select.Where(a => a.Title.StartsWith(a.Title + 1)).ToList());
+            list.Add(select.Where(a => a.Title.StartsWith(a.Type.Name)).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE((a.`Title`) LIKE '%aaa')
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE((a.`Title`) LIKE concat('%', a.`Title`))
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE((a.`Title`) LIKE concat('%', concat(a.`Title`, 1)))
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type
+            //WHERE((a.`Title`) LIKE concat('%', a__Type.`Name`))
+            list.Add(select.Where(a => (a.Title + "aaa").StartsWith("aaa")).ToList());
+            list.Add(select.Where(a => (a.Title + "aaa").StartsWith(a.Title)).ToList());
+            list.Add(select.Where(a => (a.Title + "aaa").StartsWith(a.Title + 1)).ToList());
+            list.Add(select.Where(a => (a.Title + "aaa").StartsWith(a.Type.Name)).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE((concat(a.`Title`, 'aaa')) LIKE '%aaa')
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE((concat(a.`Title`, 'aaa')) LIKE concat('%', a.`Title`))
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE((concat(a.`Title`, 'aaa')) LIKE concat('%', concat(a.`Title`, 1)))
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type
+            //WHERE((concat(a.`Title`, 'aaa')) LIKE concat('%', a__Type.`Name`))
+        }
+        [Fact]
+        public void EndsWith()
+        {
+            var list = new List<object>();
+            list.Add(select.Where(a => a.Title.EndsWith("aaa")).ToList());
+            list.Add(select.Where(a => a.Title.EndsWith(a.Title)).ToList());
+            list.Add(select.Where(a => a.Title.EndsWith(a.Title + 1)).ToList());
+            list.Add(select.Where(a => a.Title.EndsWith(a.Type.Name)).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE((a.`Title`) LIKE 'aaa%')
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE((a.`Title`) LIKE concat(a.`Title`, '%'))
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE((a.`Title`) LIKE concat(concat(a.`Title`, 1), '%'))
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type
+            //WHERE((a.`Title`) LIKE concat(a__Type.`Name`, '%'))
+            list.Add(select.Where(a => (a.Title + "aaa").EndsWith("aaa")).ToList());
+            list.Add(select.Where(a => (a.Title + "aaa").EndsWith(a.Title)).ToList());
+            list.Add(select.Where(a => (a.Title + "aaa").EndsWith(a.Title + 1)).ToList());
+            list.Add(select.Where(a => (a.Title + "aaa").EndsWith(a.Type.Name)).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE((concat(a.`Title`, 'aaa')) LIKE 'aaa%')
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE((concat(a.`Title`, 'aaa')) LIKE concat(a.`Title`, '%'))
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE((concat(a.`Title`, 'aaa')) LIKE concat(concat(a.`Title`, 1), '%'))
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type
+            //WHERE((concat(a.`Title`, 'aaa')) LIKE concat(a__Type.`Name`, '%'))
+        }
+        [Fact]
+        public void Contains()
+        {
+            var list = new List<object>();
+            list.Add(select.Where(a => a.Title.Contains("aaa")).ToList());
+            list.Add(select.Where(a => a.Title.Contains(a.Title)).ToList());
+            list.Add(select.Where(a => a.Title.Contains(a.Title + 1)).ToList());
+            list.Add(select.Where(a => a.Title.Contains(a.Type.Name)).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE((a.`Title`) LIKE '%aaa%')
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE((a.`Title`) LIKE concat('%', a.`Title`, '%'))
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE((a.`Title`) LIKE concat('%', a.`Title` +1, '%'))
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type
+            //WHERE((a.`Title`) LIKE concat('%', a__Type.`Name`, '%'))
+            list.Add(select.Where(a => (a.Title + "aaa").Contains("aaa")).ToList());
+            list.Add(select.Where(a => (a.Title + "aaa").Contains(a.Title)).ToList());
+            list.Add(select.Where(a => (a.Title + "aaa").Contains(a.Title + 1)).ToList());
+            list.Add(select.Where(a => (a.Title + "aaa").Contains(a.Type.Name)).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE((concat(a.`Title`, 'aaa')) LIKE '%aaa%')
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE((concat(a.`Title`, 'aaa')) LIKE concat('%', a.`Title`, '%'))
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE((concat(a.`Title`, 'aaa')) LIKE concat('%', concat(a.`Title`, 1), '%'))
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type
+            //WHERE((concat(a.`Title`, 'aaa')) LIKE concat('%', a__Type.`Name`, '%'))
+        }
+        [Fact]
+        public void ToLower()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.ToLower() == "aaa").ToList());
+            data.Add(select.Where(a => a.Title.ToLower() == a.Title).ToList());
+            data.Add(select.Where(a => a.Title.ToLower() == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => a.Title.ToLower() == a.Type.Name).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE(lower(a.`Title`) = 'aaa');
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE(lower(a.`Title`) = a.`Title`);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE(lower(a.`Title`) = concat(a.`Title`, 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type
+            //WHERE(lower(a.`Title`) = a__Type.`Name`);
+            data.Add(select.Where(a => (a.Title.ToLower() + "aaa").ToLower() == "aaa").ToList());
+            data.Add(select.Where(a => (a.Title.ToLower() + "aaa").ToLower() == a.Title).ToList());
+            data.Add(select.Where(a => (a.Title.ToLower() + "aaa").ToLower() == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => (a.Title.ToLower() + "aaa").ToLower() == a.Type.Name).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE(lower(concat(lower(a.`Title`), 'aaa')) = 'aaa');
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE(lower(concat(lower(a.`Title`), 'aaa')) = a.`Title`);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5
+            //FROM `tb_topic` a
+            //WHERE(lower(concat(lower(a.`Title`), 'aaa')) = concat(a.`Title`, 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type
+            //WHERE(lower(concat(lower(a.`Title`), 'aaa')) = a__Type.`Name`)
+        }
+        [Fact]
+        public void ToUpper()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.ToUpper() == "aaa").ToList());
+            data.Add(select.Where(a => a.Title.ToUpper() == a.Title).ToList());
+            data.Add(select.Where(a => a.Title.ToUpper() == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => a.Title.ToUpper() == a.Type.Name).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (upper(a.`Title`) = 'aaa');
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (upper(a.`Title`) = a.`Title`);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (upper(a.`Title`) = concat(a.`Title`, 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (upper(a.`Title`) = a__Type.`Name`);
+            data.Add(select.Where(a => (a.Title.ToUpper() + "aaa").ToUpper() == "aaa").ToList());
+            data.Add(select.Where(a => (a.Title.ToUpper() + "aaa").ToUpper() == a.Title).ToList());
+            data.Add(select.Where(a => (a.Title.ToUpper() + "aaa").ToUpper() == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => (a.Title.ToUpper() + "aaa").ToUpper() == a.Type.Name).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (upper(concat(upper(a.`Title`), 'aaa')) = 'aaa');
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (upper(concat(upper(a.`Title`), 'aaa')) = a.`Title`);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (upper(concat(upper(a.`Title`), 'aaa')) = concat(a.`Title`, 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (upper(concat(upper(a.`Title`), 'aaa')) = a__Type.`Name`)
+        }
+        [Fact]
+        public void Substring()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.Substring(0) == "aaa").ToList());
+            data.Add(select.Where(a => a.Title.Substring(0) == a.Title).ToList());
+            data.Add(select.Where(a => a.Title.Substring(0) == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => a.Title.Substring(0) == a.Type.Name).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (substr(a.`Title`, 1) = 'aaa');
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (substr(a.`Title`, 1) = a.`Title`);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (substr(a.`Title`, 1) = concat(a.`Title`, 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (substr(a.`Title`, 1) = a__Type.`Name`);
+            data.Add(select.Where(a => (a.Title.Substring(0) + "aaa").Substring(a.Title.Length) == "aaa").ToList());
+            data.Add(select.Where(a => (a.Title.Substring(0) + "aaa").Substring(0, a.Title.Length) == a.Title).ToList());
+            data.Add(select.Where(a => (a.Title.Substring(0) + "aaa").Substring(0, 3) == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => (a.Title.Substring(0) + "aaa").Substring(1, 2) == a.Type.Name).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (substr(concat(substr(a.`Title`, 1), 'aaa'), char_length(a.`Title`) + 1) = 'aaa');
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (substr(concat(substr(a.`Title`, 1), 'aaa'), 1, char_length(a.`Title`)) = a.`Title`);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (substr(concat(substr(a.`Title`, 1), 'aaa'), 1, 3) = concat(a.`Title`, 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (substr(concat(substr(a.`Title`, 1), 'aaa'), 2, 2) = a__Type.`Name`)
+        }
+        [Fact]
+        public void Length()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.Length == 0).ToList());
+            data.Add(select.Where(a => a.Title.Length == 1).ToList());
+            data.Add(select.Where(a => a.Title.Length == a.Title.Length + 1).ToList());
+            data.Add(select.Where(a => a.Title.Length == a.Type.Name.Length).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (char_length(a.`Title`) = 0);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (char_length(a.`Title`) = 1);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (char_length(a.`Title`) = char_length(a.`Title`) + 1);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (char_length(a.`Title`) = char_length(a__Type.`Name`));
+            data.Add(select.Where(a => (a.Title + "aaa").Length == 0).ToList());
+            data.Add(select.Where(a => (a.Title + "aaa").Length == 1).ToList());
+            data.Add(select.Where(a => (a.Title + "aaa").Length == a.Title.Length + 1).ToList());
+            data.Add(select.Where(a => (a.Title + "aaa").Length == a.Type.Name.Length).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (char_length(concat(a.`Title`, 'aaa')) = 0);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (char_length(concat(a.`Title`, 'aaa')) = 1);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (char_length(concat(a.`Title`, 'aaa')) = char_length(a.`Title`) + 1);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (char_length(concat(a.`Title`, 'aaa')) = char_length(a__Type.`Name`))
+        }
+        [Fact]
+        public void IndexOf()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.IndexOf("aaa") == -1).ToList());
+            data.Add(select.Where(a => a.Title.IndexOf("aaa", 2) == -1).ToList());
+            data.Add(select.Where(a => a.Title.IndexOf("aaa", 2) == (a.Title.Length + 1)).ToList());
+            data.Add(select.Where(a => a.Title.IndexOf("aaa", 2) == a.Type.Name.Length + 1).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE ((locate(a.`Title`, 'aaa') - 1) = -1);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE ((locate(a.`Title`, 'aaa', 3) - 1) = -1);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE ((locate(a.`Title`, 'aaa', 3) - 1) = char_length(a.`Title`) + 1);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE ((locate(a.`Title`, 'aaa', 3) - 1) = char_length(a__Type.`Name`) + 1);
+            data.Add(select.Where(a => (a.Title + "aaa").IndexOf("aaa") == -1).ToList());
+            data.Add(select.Where(a => (a.Title + "aaa").IndexOf("aaa", 2) == -1).ToList());
+            data.Add(select.Where(a => (a.Title + "aaa").IndexOf("aaa", 2) == (a.Title.Length + 1)).ToList());
+            data.Add(select.Where(a => (a.Title + "aaa").IndexOf("aaa", 2) == a.Type.Name.Length + 1).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE ((locate(concat(a.`Title`, 'aaa'), 'aaa') - 1) = -1);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE ((locate(concat(a.`Title`, 'aaa'), 'aaa', 3) - 1) = -1);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE ((locate(concat(a.`Title`, 'aaa'), 'aaa', 3) - 1) = char_length(a.`Title`) + 1);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE ((locate(concat(a.`Title`, 'aaa'), 'aaa', 3) - 1) = char_length(a__Type.`Name`) + 1)
+        }
+        [Fact]
+        public void PadLeft()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.PadLeft(10, 'a') == "aaa").ToList());
+            data.Add(select.Where(a => a.Title.PadLeft(10, 'a') == a.Title).ToList());
+            data.Add(select.Where(a => a.Title.PadLeft(10, 'a') == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => a.Title.PadLeft(10, 'a') == a.Type.Name).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (lpad(a.`Title`, 10, 'a') = 'aaa');
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (lpad(a.`Title`, 10, 'a') = a.`Title`);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (lpad(a.`Title`, 10, 'a') = concat(a.`Title`, 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (lpad(a.`Title`, 10, 'a') = a__Type.`Name`);
+            data.Add(select.Where(a => (a.Title.PadLeft(10, 'a') + "aaa").PadLeft(20, 'b') == "aaa").ToList());
+            data.Add(select.Where(a => (a.Title.PadLeft(10, 'a') + "aaa").PadLeft(20, 'b') == a.Title).ToList());
+            data.Add(select.Where(a => (a.Title.PadLeft(10, 'a') + "aaa").PadLeft(20, 'b') == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => (a.Title.PadLeft(10, 'a') + "aaa").PadLeft(20, 'b') == a.Type.Name).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (lpad(concat(lpad(a.`Title`, 10, 'a'), 'aaa'), 20, 'b') = 'aaa');
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (lpad(concat(lpad(a.`Title`, 10, 'a'), 'aaa'), 20, 'b') = a.`Title`);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (lpad(concat(lpad(a.`Title`, 10, 'a'), 'aaa'), 20, 'b') = concat(a.`Title`, 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (lpad(concat(lpad(a.`Title`, 10, 'a'), 'aaa'), 20, 'b') = a__Type.`Name`)
+        }
+        [Fact]
+        public void PadRight()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.PadRight(10, 'a') == "aaa").ToList());
+            data.Add(select.Where(a => a.Title.PadRight(10, 'a') == a.Title).ToList());
+            data.Add(select.Where(a => a.Title.PadRight(10, 'a') == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => a.Title.PadRight(10, 'a') == a.Type.Name).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (rpad(a.`Title`, 10, 'a') = 'aaa');
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (rpad(a.`Title`, 10, 'a') = a.`Title`);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (rpad(a.`Title`, 10, 'a') = concat(a.`Title`, 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (rpad(a.`Title`, 10, 'a') = a__Type.`Name`);
+            data.Add(select.Where(a => (a.Title.PadRight(10, 'a') + "aaa").PadRight(20, 'b') == "aaa").ToList());
+            data.Add(select.Where(a => (a.Title.PadRight(10, 'a') + "aaa").PadRight(20, 'b') == a.Title).ToList());
+            data.Add(select.Where(a => (a.Title.PadRight(10, 'a') + "aaa").PadRight(20, 'b') == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => (a.Title.PadRight(10, 'a') + "aaa").PadRight(20, 'b') == a.Type.Name).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (rpad(concat(rpad(a.`Title`, 10, 'a'), 'aaa'), 20, 'b') = 'aaa');
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (rpad(concat(rpad(a.`Title`, 10, 'a'), 'aaa'), 20, 'b') = a.`Title`);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (rpad(concat(rpad(a.`Title`, 10, 'a'), 'aaa'), 20, 'b') = concat(a.`Title`, 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (rpad(concat(rpad(a.`Title`, 10, 'a'), 'aaa'), 20, 'b') = a__Type.`Name`)
+        }
+        [Fact]
+        public void Trim()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.Trim() == "aaa").ToList());
+            data.Add(select.Where(a => a.Title.Trim('a') == a.Title).ToList());
+            data.Add(select.Where(a => a.Title.Trim('a', 'b') == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => a.Title.Trim('a', 'b', 'c') == a.Type.Name).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (trim(a.`Title`) = 'aaa');
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (trim('a' from a.`Title`) = a.`Title`);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (trim('b' from trim('a' from a.`Title`)) = concat(a.`Title`, 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (trim('c' from trim('b' from trim('a' from a.`Title`))) = a__Type.`Name`);
+            data.Add(select.Where(a => (a.Title.Trim() + "aaa").Trim() == "aaa").ToList());
+            data.Add(select.Where(a => (a.Title.Trim('a') + "aaa").Trim('a') == a.Title).ToList());
+            data.Add(select.Where(a => (a.Title.Trim('a', 'b') + "aaa").Trim('a', 'b') == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => (a.Title.Trim('a', 'b', 'c') + "aaa").Trim('a', 'b', 'c') == a.Type.Name).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (trim(concat(trim(a.`Title`), 'aaa')) = 'aaa');
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (trim('a' from concat(trim('a' from a.`Title`), 'aaa')) = a.`Title`);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (trim('b' from trim('a' from concat(trim('b' from trim('a' from a.`Title`)), 'aaa'))) = concat(a.`Title`, 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (trim('c' from trim('b' from trim('a' from concat(trim('c' from trim('b' from trim('a' from a.`Title`))), 'aaa')))) = a__Type.`Name`)
+        }
+        [Fact]
+        public void TrimStart()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.TrimStart() == "aaa").ToList());
+            data.Add(select.Where(a => a.Title.TrimStart('a') == a.Title).ToList());
+            data.Add(select.Where(a => a.Title.TrimStart('a', 'b') == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => a.Title.TrimStart('a', 'b', 'c') == a.Type.Name).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (ltrim(a.`Title`) = 'aaa');
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (trim(trailing 'a' from trim(leading 'a' from a.`Title`)) = a.`Title`);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (trim(trailing 'b' from trim(leading 'b' from trim(trailing 'a' from trim(leading 'a' from a.`Title`)))) = concat(a.`Title`, 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (trim(trailing 'c' from trim(leading 'c' from trim(trailing 'b' from trim(leading 'b' from trim(trailing 'a' from trim(leading 'a' from a.`Title`)))))) = a__Type.`Name`);
+            data.Add(select.Where(a => (a.Title.TrimStart() + "aaa").TrimStart() == "aaa").ToList());
+            data.Add(select.Where(a => (a.Title.TrimStart('a') + "aaa").TrimStart('a') == a.Title).ToList());
+            data.Add(select.Where(a => (a.Title.TrimStart('a', 'b') + "aaa").TrimStart('a', 'b') == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => (a.Title.TrimStart('a', 'b', 'c') + "aaa").TrimStart('a', 'b', 'c') == a.Type.Name).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (ltrim(concat(ltrim(a.`Title`), 'aaa')) = 'aaa');
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (trim(trailing 'a' from trim(leading 'a' from concat(trim(trailing 'a' from trim(leading 'a' from a.`Title`)), 'aaa'))) = a.`Title`);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (trim(trailing 'b' from trim(leading 'b' from trim(trailing 'a' from trim(leading 'a' from concat(trim(trailing 'b' from trim(leading 'b' from trim(trailing 'a' from trim(leading 'a' from a.`Title`)))), 'aaa'))))) = concat(a.`Title`, 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (trim(trailing 'c' from trim(leading 'c' from trim(trailing 'b' from trim(leading 'b' from trim(trailing 'a' from trim(leading 'a' from concat(trim(trailing 'c' from trim(leading 'c' from trim(trailing 'b' from trim(leading 'b' from trim(trailing 'a' from trim(leading 'a' from a.`Title`)))))), 'aaa'))))))) = a__Type.`Name`)
+        }
+        [Fact]
+        public void TrimEnd()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.TrimEnd() == "aaa").ToList());
+            data.Add(select.Where(a => a.Title.TrimEnd('a') == a.Title).ToList());
+            data.Add(select.Where(a => a.Title.TrimEnd('a', 'b') == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => a.Title.TrimEnd('a', 'b', 'c') == a.Type.Name).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (rtrim(a.`Title`) = 'aaa');
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (trim(trailing 'a' from a.`Title`) = a.`Title`);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (trim(trailing 'b' from trim(trailing 'a' from a.`Title`)) = concat(a.`Title`, 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (trim(trailing 'c' from trim(trailing 'b' from trim(trailing 'a' from a.`Title`))) = a__Type.`Name`);
+            data.Add(select.Where(a => (a.Title.TrimEnd() + "aaa").TrimEnd() == "aaa").ToList());
+            data.Add(select.Where(a => (a.Title.TrimEnd('a') + "aaa").TrimEnd('a') == a.Title).ToList());
+            data.Add(select.Where(a => (a.Title.TrimEnd('a', 'b') + "aaa").TrimEnd('a', 'b') == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => (a.Title.TrimEnd('a', 'b', 'c') + "aaa").TrimEnd('a', 'b', 'c') == a.Type.Name).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (rtrim(concat(rtrim(a.`Title`), 'aaa')) = 'aaa');
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (trim(trailing 'a' from concat(trim(trailing 'a' from a.`Title`), 'aaa')) = a.`Title`);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (trim(trailing 'b' from trim(trailing 'a' from concat(trim(trailing 'b' from trim(trailing 'a' from a.`Title`)), 'aaa'))) = concat(a.`Title`, 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (trim(trailing 'c' from trim(trailing 'b' from trim(trailing 'a' from concat(trim(trailing 'c' from trim(trailing 'b' from trim(trailing 'a' from a.`Title`))), 'aaa')))) = a__Type.`Name`)
+        }
+        [Fact]
+        public void Replace()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.Replace("a", "b") == "aaa").ToList());
+            data.Add(select.Where(a => a.Title.Replace("a", "b").Replace("b", "c") == a.Title).ToList());
+            data.Add(select.Where(a => a.Title.Replace("a", "b").Replace("b", "c").Replace("c", "a") == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => a.Title.Replace("a", "b").Replace("b", "c").Replace(a.Type.Name, "a") == a.Type.Name).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (replace(a.`Title`, 'a', 'b') = 'aaa');
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (replace(replace(a.`Title`, 'a', 'b'), 'b', 'c') = a.`Title`);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (replace(replace(replace(a.`Title`, 'a', 'b'), 'b', 'c'), 'c', 'a') = concat(a.`Title`, 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (replace(replace(replace(a.`Title`, 'a', 'b'), 'b', 'c'), a__Type.`Name`, 'a') = a__Type.`Name`);
+            data.Add(select.Where(a => (a.Title.Replace("a", "b") + "aaa").TrimEnd() == "aaa").ToList());
+            data.Add(select.Where(a => (a.Title.Replace("a", "b").Replace("b", "c") + "aaa").TrimEnd('a') == a.Title).ToList());
+            data.Add(select.Where(a => (a.Title.Replace("a", "b").Replace("b", "c").Replace("c", "a") + "aaa").TrimEnd('a', 'b') == (a.Title + 1)).ToList());
+            data.Add(select.Where(a => (a.Title.Replace("a", "b").Replace("b", "c").Replace(a.Type.Name, "a") + "aaa").TrimEnd('a', 'b', 'c') == a.Type.Name).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (concat(replace(a.`Title`, 'a', 'b'), 'aaa') = 'aaa');
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (concat(replace(replace(a.`Title`, 'a', 'b'), 'b', 'c'), 'aaa') = a.`Title`);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (concat(replace(replace(replace(a.`Title`, 'a', 'b'), 'b', 'c'), 'c', 'a'), 'aaa') = concat(a.`Title`, 1));
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (concat(replace(replace(replace(a.`Title`, 'a', 'b'), 'b', 'c'), a__Type.`Name`, 'a'), 'aaa') = a__Type.`Name`)
+        }
+        [Fact]
+        public void CompareTo()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.Title.CompareTo(a.Title) == 0).ToList());
+            data.Add(select.Where(a => a.Title.CompareTo(a.Title) > 0).ToList());
+            data.Add(select.Where(a => a.Title.CompareTo(a.Title + 1) == 0).ToList());
+            data.Add(select.Where(a => a.Title.CompareTo(a.Title + a.Type.Name) == 0).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (strcmp(a.`Title`, a.`Title`) = 0);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (strcmp(a.`Title`, a.`Title`) > 0);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (strcmp(a.`Title`, concat(a.`Title`, 1)) = 0);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (strcmp(a.`Title`, concat(a.`Title`, a__Type.`Name`)) = 0);
+            data.Add(select.Where(a => (a.Title + "aaa").CompareTo("aaa") == 0).ToList());
+            data.Add(select.Where(a => (a.Title + "aaa").CompareTo(a.Title) > 0).ToList());
+            data.Add(select.Where(a => (a.Title + "aaa").CompareTo(a.Title + 1) == 0).ToList());
+            data.Add(select.Where(a => (a.Title + "aaa").CompareTo(a.Type.Name) == 0).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (strcmp(concat(a.`Title`, 'aaa'), 'aaa') = 0);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (strcmp(concat(a.`Title`, 'aaa'), a.`Title`) > 0);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (strcmp(concat(a.`Title`, 'aaa'), concat(a.`Title`, 1)) = 0);
+
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a__Type.`Guid` as4, a__Type.`ParentId` as5, a__Type.`Name` as6, a.`Title` as7, a.`CreateTime` as8 
+            //FROM `tb_topic` a, `TestTypeInfo` a__Type 
+            //WHERE (strcmp(concat(a.`Title`, 'aaa'), a__Type.`Name`) = 0)
+        }
+
+        [Fact]
+        public void string_IsNullOrEmpty()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => string.IsNullOrEmpty(a.Title)).ToList());
+            data.Add(select.Where(a => string.IsNullOrEmpty(a.Title) == false).ToList());
+            data.Add(select.Where(a => !string.IsNullOrEmpty(a.Title)).ToList());
+        }
+
+        [Fact]
+        public void string_IsNullOrWhiteSpace()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => string.IsNullOrWhiteSpace(a.Title)).ToList());
+            data.Add(select.Where(a => string.IsNullOrWhiteSpace(a.Title) == false).ToList());
+            data.Add(select.Where(a => !string.IsNullOrWhiteSpace(a.Title)).ToList());
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/PostgreSQLExpression/TimeSpanTest.cs

@@ -0,0 +1,293 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.PostgreSQLExpression
+{
+    public class TimeSpanTest
+    {
+
+        ISelect<Topic> select => g.pgsql.Select<Topic>();
+
+        [Table(Name = "tb_topic")]
+        class Topic
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int Clicks { get; set; }
+            public int TypeGuid { get; set; }
+            public TestTypeInfo Type { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+        class TestTypeInfo
+        {
+            public int Guid { get; set; }
+            public int ParentId { get; set; }
+            public TestTypeParentInfo Parent { get; set; }
+            public string Name { get; set; }
+        }
+        class TestTypeParentInfo
+        {
+            public int Id { get; set; }
+            public string Name { get; set; }
+
+            public List<TestTypeInfo> Types { get; set; }
+        }
+        [Fact]
+        public void Zero()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay > TimeSpan.Zero).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000) > 0)
+        }
+        [Fact]
+        public void MinValue()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay > TimeSpan.MinValue).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000) > -922337203685477580)
+        }
+        [Fact]
+        public void MaxValue()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay < TimeSpan.MaxValue).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000) < 922337203685477580)
+        }
+        [Fact]
+        public void Days()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.Days == 0).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000)) div 86400000000) = 0)
+        }
+        [Fact]
+        public void Hours()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.Hours > 0).ToSql());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000)) div 3600000000) mod 24 > 0)
+        }
+        [Fact]
+        public void Milliseconds()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.Milliseconds > 0).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000)) div 1000 mod 1000) > 0)
+        }
+        [Fact]
+        public void Minutes()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.Minutes > 0).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000)) div 60000000 mod 60) > 0)
+        }
+        [Fact]
+        public void Seconds()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.Seconds > 0).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000)) div 1000000 mod 60) > 0)
+        }
+        [Fact]
+        public void Ticks()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.Ticks > 0).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000)) * 10) > 0)
+        }
+        [Fact]
+        public void TotalDays()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.TotalDays > 0).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000)) / 86400000000) > 0)
+        }
+        [Fact]
+        public void TotalHours()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.TotalHours > 0).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000)) / 3600000000) > 0)
+        }
+        [Fact]
+        public void TotalMilliseconds()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.TotalMilliseconds > 0).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000)) / 1000) > 0)
+        }
+        [Fact]
+        public void TotalMinutes()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.TotalMinutes > 0).ToSql());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000)) / 60000000) > 0)
+        }
+        [Fact]
+        public void TotalSeconds()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.TotalSeconds > 0).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000)) / 1000000) > 0)
+        }
+        [Fact]
+        public void Add()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.Add(TimeSpan.FromDays(1)) > TimeSpan.Zero).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE ((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000) + (1 * 86400000000)) > 0)
+        }
+        [Fact]
+        public void Subtract()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.Subtract(TimeSpan.FromDays(1)) > TimeSpan.Zero).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE ((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000) - (1 * 86400000000)) > 0)
+        }
+        [Fact]
+        public void CompareTo()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.CompareTo(TimeSpan.FromDays(1)) > 0).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000)) - ((1 * 86400000000))) > 0)
+        }
+        [Fact]
+        public void this_Equals()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.Equals(TimeSpan.FromDays(1))).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE ((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000) = (1 * 86400000000)))
+        }
+        [Fact]
+        public void this_ToString()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => a.CreateTime.TimeOfDay.ToString() == "ssss").ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (date_format(date_add(cast('0001/1/1 0:00:00' as datetime), interval (timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000)) microsecond), '%Y-%m-%d %H:%i:%s.%f') = 'ssss')
+        }
+
+        [Fact]
+        public void TimeSpan_Compare()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => TimeSpan.Compare(a.CreateTime.TimeOfDay, TimeSpan.FromDays(1)) > 0).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000)) - ((1 * 86400000000))) > 0)
+        }
+        [Fact]
+        public void TimeSpan_Equals()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => TimeSpan.Equals(a.CreateTime.TimeOfDay, TimeSpan.FromDays(1))).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE ((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000) = (1 * 86400000000)))
+        }
+        [Fact]
+        public void TimeSpan_FromDays()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => TimeSpan.Equals(a.CreateTime.TimeOfDay, TimeSpan.FromDays(1))).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE ((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000) = (1 * 86400000000)))
+        }
+        [Fact]
+        public void TimeSpan_FromHours()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => TimeSpan.Equals(a.CreateTime.TimeOfDay, TimeSpan.FromHours(1))).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE ((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000) = (1 * 3600000000)))
+        }
+        [Fact]
+        public void TimeSpan_FromMilliseconds()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => TimeSpan.Equals(a.CreateTime.TimeOfDay, TimeSpan.FromMilliseconds(1))).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE ((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000) = (1 * 1000)))
+        }
+        [Fact]
+        public void TimeSpan_FromMinutes()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => TimeSpan.Equals(a.CreateTime.TimeOfDay, TimeSpan.FromMinutes(1))).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE ((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000) = (1 * 60000000)))
+        }
+        [Fact]
+        public void TimeSpan_FromSeconds()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => TimeSpan.Equals(a.CreateTime.TimeOfDay, TimeSpan.FromSeconds(1))).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE ((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000) = (1 * 1000000)))
+        }
+        [Fact]
+        public void TimeSpan_FromTicks()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => TimeSpan.Equals(a.CreateTime.TimeOfDay, TimeSpan.FromTicks(1))).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE ((timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000) = (1 / 10)))
+        }
+        [Fact]
+        public void TimeSpan_Parse()
+        {
+            var data = new List<object>();
+            data.Add(select.Where(a => TimeSpan.Parse(a.CreateTime.TimeOfDay.ToString()) > TimeSpan.Zero).ToList());
+            //SELECT a.`Id` as1, a.`Clicks` as2, a.`TypeGuid` as3, a.`Title` as4, a.`CreateTime` as5 
+            //FROM `tb_topic` a 
+            //WHERE (cast(date_format(date_add(cast('0001/1/1 0:00:00' as datetime), interval (timestampdiff(microsecond, date_format(a.`CreateTime`, '1970-1-1 %H:%i:%s.%f'), a.`CreateTime`) + 62135596800000000)) microsecond), '%Y-%m-%d %H:%i:%s.%f') as signed) > 0)
+        }
+    }
+}

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/UnitTest1.cs

@@ -349,7 +349,6 @@ WHERE ROWNUM < 11";
             var testrunsql3 = g.sqlserver.Select<TaskBuild>().Where(a => a.OptionsEntity04 > DateTime.Now.AddDays(0).ToString("yyyyMMdd").TryTo<int>()).ToSql();
             var testrunsql4 = g.oracle.Select<TaskBuild>().Where(a => a.OptionsEntity04 > DateTime.Now.AddDays(0).ToString("yyyyMMdd").TryTo<int>()).ToSql();
 
-            var testssargs1 = "10100";
             var testformatsql1 = g.mysql.Select<TaskBuild>().Where(a => a.NamespaceName == $"1_{10100}").ToSql();
             var testorderbysql = g.mysql.Select<TaskBuild>().OrderByDescending(a => a.OptionsEntity04 + (a.score ?? 0)).ToSql();
 

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/g.cs

@@ -38,4 +38,27 @@ public class g
             (cmd, traceLog) => Console.WriteLine(traceLog))
         .Build());
     public static IFreeSql oracle => oracleLazy.Value;
+
+    static Lazy<IFreeSql> pgsqlLazy = new Lazy<IFreeSql>(() =>
+    {
+        return new FreeSql.FreeSqlBuilder()
+        .UseConnectionString(FreeSql.DataType.OdbcPostgreSQL, "Driver={PostgreSQL Unicode(x64)};Server=192.168.164.10;Port=5432;UID=postgres;PWD=123456;Database=tedb_odbc;Pooling=true;Maximum Pool Size=2")
+        .UseAutoSyncStructure(true)
+        .UseSyncStructureToLower(true)
+        .UseLazyLoading(true)
+        .UseMonitorCommand(
+            cmd => Trace.WriteLine(cmd.CommandText), //监听SQL命令对象，在执行前
+            (cmd, traceLog) => Console.WriteLine(traceLog))
+        .Build();
+    });
+    public static IFreeSql pgsql => pgsqlLazy.Value;
+
+    static Lazy<IFreeSql> odbcLazy = new Lazy<IFreeSql>(() => new FreeSql.FreeSqlBuilder()
+        .UseConnectionString(FreeSql.DataType.Odbc, "Driver={SQL Server};Server=.;Persist Security Info=False;Trusted_Connection=Yes;Integrated Security=True;DATABASE=freesqlTest_odbc;Pooling=true;Max pool size=5")
+        .UseMonitorCommand(
+            cmd => Trace.WriteLine(cmd.CommandText), //监听SQL命令对象，在执行前
+            (cmd, traceLog) => Console.WriteLine(traceLog))
+        .UseLazyLoading(true)
+        .Build());
+    public static IFreeSql odbc => odbcLazy.Value;
 }

FreeSql.Tests/FreeSql.Tests/PostgreSQL/PostgreSQLAdo/PostgreSQLAdoTest.cs

@@ -60,7 +60,7 @@ namespace FreeSql.Tests.PostgreSQL
 
         class xxx
         {
-            public int Id { get; set; }
+            public string Id { get; set; }
             public string Path { get; set; }
             public string Title2 { get; set; }
         }

FreeSql/DataType.cs

@@ -8,6 +8,17 @@ namespace FreeSql
 
         MySql, SqlServer, PostgreSQL, Oracle, Sqlite,
 
-        OdbcOracle, OdbcSqlServer, OdbcMySql
+        OdbcOracle, OdbcSqlServer, OdbcMySql, OdbcPostgreSQL,
+
+        /// <summary>
+        /// 通用的 Odbc 实现，只能做基本的 Crud 操作 <para></para>
+        /// 不支持实体结构迁移、不支持分页（只能 Take 查询） <para></para>
+        /// 
+        /// 通用实现为了让用户自己适配更多的数据库，比如连接 mssql 2000、db2 等数据库<para></para>
+        /// 默认适配 SqlServer，可以继承后重新适配 FreeSql.Odbc.Default.OdbcAdapter，最好去看下代码 <para></para>
+        /// 
+        /// 适配新的 OdbcAdapter，请在 FreeSqlBuilder.Build 之后调用 IFreeSql.SetOdbcAdapter 方法设置
+        /// </summary>
+        Odbc
     }
 }

FreeSql/FreeSql.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
-		<Version>0.9.17</Version>
+		<Version>0.9.18</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql is the most convenient ORM in dotnet. It supports Mysql, Postgresql, SqlServer, Oracle and Sqlite.</Description>

FreeSql/FreeSql.xml

@@ -345,6 +345,15 @@
             枚举项
             </summary>
         </member>
+        <member name="F:FreeSql.DataType.Odbc">
+            <summary>
+            通用的 Odbc 实现，只能做基本的 Crud 操作 <para></para>
+            不支持实体结构迁移、不支持分页（只能 Take 查询） <para></para>
+            默认适配 SqlServer，可以继承后重新适配 FreeSql.Odbc.Default.OdbcAdapter，最好去看下代码 <para></para>
+            
+            适配新的 OdbcAdapter，请在 FreeSqlBuilder.Build 之后调用 IFreeSql.SetOdbcAdapter 方法设置
+            </summary>
+        </member>
         <member name="M:FreeSql.Extensions.EntityUtil.EntityUtilExtensions.GetEntityKeyString(IFreeSql,System.Type,System.Object,System.Boolean,System.String)">
             <summary>
             获取实体的主键值，以 "*|_,[,_|*" 分割，当任意一个主键属性无值时，返回 null

FreeSql/FreeSqlBuilder.cs

@@ -178,6 +178,14 @@ namespace FreeSql
                         type = Type.GetType("FreeSql.Odbc.MySql.OdbcMySqlProvider`1,FreeSql.Provider.Odbc")?.MakeGenericType(typeof(TMark));
                         if (type == null) throw new Exception("缺少 FreeSql 数据库实现包：FreeSql.Provider.Odbc.dll，可前往 nuget 下载");
                         break;
+                    case DataType.OdbcPostgreSQL:
+                        type = Type.GetType("FreeSql.Odbc.PostgreSQL.OdbcPostgreSQLProvider`1,FreeSql.Provider.Odbc")?.MakeGenericType(typeof(TMark));
+                        if (type == null) throw new Exception("缺少 FreeSql 数据库实现包：FreeSql.Provider.Odbc.dll，可前往 nuget 下载");
+                        break;
+                    case DataType.Odbc:
+                        type = Type.GetType("FreeSql.Odbc.Default.OdbcProvider`1,FreeSql.Provider.Odbc")?.MakeGenericType(typeof(TMark));
+                        if (type == null) throw new Exception("缺少 FreeSql 数据库实现包：FreeSql.Provider.Odbc.dll，可前往 nuget 下载");
+                        break;
 
                     default: throw new Exception("未指定 UseConnectionString");
                 }
@@ -202,34 +210,24 @@ namespace FreeSql
                     switch (_entityPropertyConvertType)
                     {
                         case StringConvertType.Lower:
-                            ret.Aop.ConfigEntityProperty += (s, e) =>
-                            {
+                            ret.Aop.ConfigEntityProperty += (_, e) =>
                                 e.ModifyResult.Name = e.Property.Name.ToLower();
-                            };
                             break;
                         case StringConvertType.Upper:
-                            ret.Aop.ConfigEntityProperty += (s, e) =>
-                            {
+                            ret.Aop.ConfigEntityProperty += (_, e) =>
                                 e.ModifyResult.Name = e.Property.Name.ToUpper();
-                            };
                             break;
                         case StringConvertType.PascalCaseToUnderscore:
-                            ret.Aop.ConfigEntityProperty += (s, e) =>
-                            {
+                            ret.Aop.ConfigEntityProperty += (_, e) =>
                                 e.ModifyResult.Name = StringUtils.PascalCaseToUnderScore(e.Property.Name);
-                            };
                             break;
                         case StringConvertType.PascalCaseToUnderscoreWithLower:
-                            ret.Aop.ConfigEntityProperty += (s, e) =>
-                            {
+                            ret.Aop.ConfigEntityProperty += (_, e) =>
                                 e.ModifyResult.Name = StringUtils.PascalCaseToUnderScore(e.Property.Name).ToLower();
-                            };
                             break;
                         case StringConvertType.PascalCaseToUnderscoreWithUpper:
-                            ret.Aop.ConfigEntityProperty += (s, e) =>
-                            {
+                            ret.Aop.ConfigEntityProperty += (_, e) =>
                                 e.ModifyResult.Name = StringUtils.PascalCaseToUnderScore(e.Property.Name).ToUpper();
-                            };
                             break;
                         default:
                             break;
@@ -258,20 +256,25 @@ namespace FreeSql
                                 switch (ret.Ado.DataType)
                                 {
                                     case DataType.MySql:
+                                    case DataType.OdbcMySql:
                                         e.ModifyResult.DbType = tryval > 0 ? $"varchar({tryval})" : "text";
                                         break;
                                     case DataType.SqlServer:
+                                    case DataType.OdbcSqlServer:
                                         e.ModifyResult.DbType = tryval > 0 ? $"nvarchar({tryval})" : "nvarchar(max)";
                                         break;
                                     case DataType.PostgreSQL:
+                                    case DataType.OdbcPostgreSQL:
                                         e.ModifyResult.DbType = tryval > 0 ? $"varchar({tryval})" : "text";
                                         break;
                                     case DataType.Oracle:
+                                    case DataType.OdbcOracle:
                                         e.ModifyResult.DbType = tryval > 0 ? $"nvarchar2({tryval})" : "nvarchar2(4000)";
                                         break;
                                     case DataType.Sqlite:
                                         e.ModifyResult.DbType = tryval > 0 ? $"nvarchar({tryval})" : "text";
                                         break;
+
                                 }
                             }
                         }

FreeSql/Internal/CommonProvider/CodeFirstProvider.cs

@@ -27,7 +27,7 @@ namespace FreeSql.Internal.CommonProvider
             _commonExpression = commonExpression;
         }
 
-        public bool IsAutoSyncStructure { get; set; } = false;
+        public virtual bool IsAutoSyncStructure { get; set; } = false;
         public bool IsSyncStructureToLower { get; set; } = false;
         public bool IsSyncStructureToUpper { get; set; } = false;
         public bool IsConfigEntityFromDbFirst { get; set; } = false;

Providers/FreeSql.Provider.MySql/FreeSql.Provider.MySql.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net452</TargetFrameworks>
-		<Version>0.9.17</Version>
+		<Version>0.9.18</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql 数据库实现，基于 MySql 5.6</Description>

Providers/FreeSql.Provider.MySql/MySqlExpression.cs

@@ -383,7 +383,7 @@ namespace FreeSql.MySql
                             case "System.TimeSpan": return $"date_sub({left}, interval ({args1}) microsecond)";
                         }
                         break;
-                    case "Equals": return $"({left} = {getExp(exp.Arguments[0])})";
+                    case "Equals": return $"({left} = {args1})";
                     case "CompareTo": return $"timestampdiff(microsecond,{args1},{left})";
                     case "ToString": return exp.Arguments.Count == 0 ? $"date_format({left}, '%Y-%m-%d %H:%i:%s.%f')" : null;
                 }
@@ -419,8 +419,8 @@ namespace FreeSql.MySql
                 {
                     case "Add": return $"({left}+{args1})";
                     case "Subtract": return $"({left}-({args1}))";
-                    case "Equals": return $"({left} = {getExp(exp.Arguments[0])})";
-                    case "CompareTo": return $"({left}-({getExp(exp.Arguments[0])}))";
+                    case "Equals": return $"({left} = {args1})";
+                    case "CompareTo": return $"({left}-({args1}))";
                     case "ToString": return $"cast({left} as char)";
                 }
             }

Providers/FreeSql.Provider.MySqlConnector/FreeSql.Provider.MySqlConnector.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
-		<Version>0.9.17</Version>
+		<Version>0.9.18</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql 数据库实现，基于 MySql 5.6</Description>

Providers/FreeSql.Provider.Odbc/Default/Curd/OdbcDelete.cs

@@ -0,0 +1,21 @@
+using FreeSql.Internal;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FreeSql.Odbc.Default
+{
+
+    class OdbcDelete<T1> : Internal.CommonProvider.DeleteProvider<T1> where T1 : class
+    {
+        public OdbcDelete(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere)
+            : base(orm, commonUtils, commonExpression, dywhere)
+        {
+        }
+
+        public override List<T1> ExecuteDeleted() => throw new NotImplementedException("FreeSql.Odbc.Default 未实现该功能");
+        public override Task<List<T1>> ExecuteDeletedAsync() => throw new NotImplementedException("FreeSql.Odbc.Default 未实现该功能");
+    }
+}

Providers/FreeSql.Provider.Odbc/Default/Curd/OdbcInsert.cs

@@ -0,0 +1,107 @@
+using FreeSql.Internal;
+using SafeObjectPool;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Data.Common;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FreeSql.Odbc.Default
+{
+
+    class OdbcInsert<T1> : Internal.CommonProvider.InsertProvider<T1> where T1 : class
+    {
+        OdbcUtils _utils;
+        public OdbcInsert(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression)
+            : base(orm, commonUtils, commonExpression)
+        {
+            _utils = _commonUtils as OdbcUtils;
+        }
+
+        public override int ExecuteAffrows() => base.SplitExecuteAffrows(_utils.Adapter.InsertBatchSplitLimit, 255);
+        public override Task<int> ExecuteAffrowsAsync() => base.SplitExecuteAffrowsAsync(_utils.Adapter.InsertBatchSplitLimit, 255);
+        public override long ExecuteIdentity() => base.SplitExecuteIdentity(_utils.Adapter.InsertBatchSplitLimit, 255);
+        public override Task<long> ExecuteIdentityAsync() => base.SplitExecuteIdentityAsync(_utils.Adapter.InsertBatchSplitLimit, 255);
+        public override List<T1> ExecuteInserted() => base.SplitExecuteInserted(_utils.Adapter.InsertBatchSplitLimit, 255);
+        public override Task<List<T1>> ExecuteInsertedAsync() => base.SplitExecuteInsertedAsync(_utils.Adapter.InsertBatchSplitLimit, 255);
+
+        protected override long RawExecuteIdentity()
+        {
+            var sql = this.ToSql();
+            if (string.IsNullOrEmpty(sql)) return 0;
+
+            Object<DbConnection> poolConn = null;
+            var before = new Aop.CurdBeforeEventArgs(_table.Type, Aop.CurdType.Insert, string.Concat(sql, $"; {_utils.Adapter.InsertAfterGetIdentitySql}"), _params);
+            _orm.Aop.CurdBefore?.Invoke(this, before);
+            long ret = 0;
+            Exception exception = null;
+            try
+            {
+                var conn = _connection;
+                if (_transaction != null) conn = _transaction.Connection;
+                if (conn == null)
+                {
+                    poolConn = _orm.Ado.MasterPool.Get();
+                    conn = poolConn.Value;
+                }
+                _orm.Ado.ExecuteNonQuery(conn, _transaction, CommandType.Text, sql, _params);
+                ret = long.TryParse(string.Concat(_orm.Ado.ExecuteScalar(conn, _transaction, CommandType.Text, _utils.Adapter.InsertAfterGetIdentitySql)), out var trylng) ? trylng : 0;
+            }
+            catch (Exception ex)
+            {
+                exception = ex;
+                throw ex;
+            }
+            finally
+            {
+                if (poolConn != null)
+                    _orm.Ado.MasterPool.Return(poolConn);
+
+                var after = new Aop.CurdAfterEventArgs(before, exception, ret);
+                _orm.Aop.CurdAfter?.Invoke(this, after);
+            }
+            return ret;
+        }
+        async protected override Task<long> RawExecuteIdentityAsync()
+        {
+            var sql = this.ToSql();
+            if (string.IsNullOrEmpty(sql)) return 0;
+
+            Object<DbConnection> poolConn = null;
+            var before = new Aop.CurdBeforeEventArgs(_table.Type, Aop.CurdType.Insert, string.Concat(sql, $"; {_utils.Adapter.InsertAfterGetIdentitySql}"), _params);
+            _orm.Aop.CurdBefore?.Invoke(this, before);
+            long ret = 0;
+            Exception exception = null;
+            try
+            {
+                var conn = _connection;
+                if (_transaction != null) conn = _transaction.Connection;
+                if (conn == null)
+                {
+                    poolConn = _orm.Ado.MasterPool.Get();
+                    conn = poolConn.Value;
+                }
+                await _orm.Ado.ExecuteNonQueryAsync(conn, _transaction, CommandType.Text, sql, _params);
+                ret = long.TryParse(string.Concat(await _orm.Ado.ExecuteScalarAsync(conn, _transaction, CommandType.Text, _utils.Adapter.InsertAfterGetIdentitySql)), out var trylng) ? trylng : 0;
+            }
+            catch (Exception ex)
+            {
+                exception = ex;
+                throw ex;
+            }
+            finally
+            {
+                if (poolConn != null)
+                    _orm.Ado.MasterPool.Return(poolConn);
+
+                var after = new Aop.CurdAfterEventArgs(before, exception, ret);
+                _orm.Aop.CurdAfter?.Invoke(this, after);
+            }
+            return ret;
+        }
+
+        protected override List<T1> RawExecuteInserted() => throw new NotImplementedException("FreeSql.Odbc.Default 未实现该功能");
+        protected override Task<List<T1>> RawExecuteInsertedAsync() => throw new NotImplementedException("FreeSql.Odbc.Default 未实现该功能");
+    }
+}

Providers/FreeSql.Provider.Odbc/Default/Curd/OdbcSelect.cs

@@ -0,0 +1,189 @@
+using FreeSql.Internal;
+using FreeSql.Internal.Model;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+
+namespace FreeSql.Odbc.Default
+{
+
+    class OdbcSelect<T1> : FreeSql.Internal.CommonProvider.Select1Provider<T1> where T1 : class
+    {
+        internal static string ToSqlStatic(CommonUtils _commonUtils, CommonExpression _commonExpression, string _select, bool _distinct, string field, StringBuilder _join, StringBuilder _where, string _groupby, string _having, string _orderby, int _skip, int _limit, List<SelectTableInfo> _tables, List<Dictionary<Type, string>> tbUnions, List<LambdaExpression> _whereCascadeExpression, IFreeSql _orm)
+        {
+            var _utils = _commonUtils as OdbcUtils;
+            if (_orm.CodeFirst.IsAutoSyncStructure)
+                _orm.CodeFirst.SyncStructure(_tables.Select(a => a.Table.Type).ToArray());
+
+            if (_whereCascadeExpression.Any())
+                foreach (var tb in _tables.Where(a => a.Type != SelectTableInfoType.Parent))
+                    tb.Cascade = _commonExpression.GetWhereCascadeSql(tb, _whereCascadeExpression);
+
+            var sb = new StringBuilder();
+            var tbUnionsGt0 = tbUnions.Count > 1;
+            for (var tbUnionsIdx = 0; tbUnionsIdx < tbUnions.Count; tbUnionsIdx++)
+            {
+                if (tbUnionsIdx > 0) sb.Append(" \r\n\r\nUNION ALL\r\n\r\n");
+                if (tbUnionsGt0) sb.Append("select * from (");
+                var tbUnion = tbUnions[tbUnionsIdx];
+
+                var sbnav = new StringBuilder();
+                sb.Append(_select);
+                if (_distinct) sb.Append("DISTINCT ");
+                if (_limit > 0 && _utils.Adapter.SelectTopStyle == OdbcAdapter.SelecTopStyle.Top) sb.Append("TOP ").Append(_skip + _limit).Append(" ");
+                sb.Append(field);
+                if (_skip > 0)
+                {
+                    if (string.IsNullOrEmpty(_orderby))
+                    {
+                        var pktb = _tables.Where(a => a.Table.Primarys.Any()).FirstOrDefault();
+                        if (pktb != null) _orderby = string.Concat(" \r\nORDER BY ", pktb.Alias, ".", _commonUtils.QuoteSqlName(pktb?.Table.Primarys.First().Attribute.Name));
+                        else _orderby = string.Concat(" \r\nORDER BY ", _tables.First().Alias, ".", _commonUtils.QuoteSqlName(_tables.First().Table.Columns.First().Value.Attribute.Name));
+                    }
+                    sb.Append(", ROW_NUMBER() OVER(").Append(_orderby).Append(") AS __rownum__");
+
+                    throw new NotImplementedException("FreeSql.Odbc.Default 未实现 Skip/Offset 功能，如果需要分页请使用判断上一次 id");
+                }
+                sb.Append(" \r\nFROM ");
+                var tbsjoin = _tables.Where(a => a.Type != SelectTableInfoType.From).ToArray();
+                var tbsfrom = _tables.Where(a => a.Type == SelectTableInfoType.From).ToArray();
+                for (var a = 0; a < tbsfrom.Length; a++)
+                {
+                    sb.Append(_commonUtils.QuoteSqlName(tbUnion[tbsfrom[a].Table.Type])).Append(" ").Append(tbsfrom[a].Alias);
+                    if (tbsjoin.Length > 0)
+                    {
+                        //如果存在 join 查询，则处理 from t1, t2 改为 from t1 inner join t2 on 1 = 1
+                        for (var b = 1; b < tbsfrom.Length; b++)
+                        {
+                            sb.Append(" \r\nLEFT JOIN ").Append(_commonUtils.QuoteSqlName(tbUnion[tbsfrom[b].Table.Type])).Append(" ").Append(tbsfrom[b].Alias);
+
+                            if (string.IsNullOrEmpty(tbsfrom[b].NavigateCondition) && string.IsNullOrEmpty(tbsfrom[b].On) && string.IsNullOrEmpty(tbsfrom[b].Cascade)) sb.Append(" ON 1 = 1");
+                            else
+                            {
+                                sb.Append(" ON ").Append(tbsfrom[b].NavigateCondition ?? tbsfrom[b].On);
+                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false) sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                            }
+                        }
+                        break;
+                    }
+                    else
+                    {
+                        if (!string.IsNullOrEmpty(tbsfrom[a].NavigateCondition)) sbnav.Append(" AND (").Append(tbsfrom[a].NavigateCondition).Append(")");
+                        if (!string.IsNullOrEmpty(tbsfrom[a].On)) sbnav.Append(" AND (").Append(tbsfrom[a].On).Append(")");
+                        if (a > 0 && !string.IsNullOrEmpty(tbsfrom[a].Cascade)) sbnav.Append(" AND (").Append(tbsfrom[a].Cascade).Append(")");
+                    }
+                    if (a < tbsfrom.Length - 1) sb.Append(", ");
+                }
+                foreach (var tb in tbsjoin)
+                {
+                    if (tb.Type == SelectTableInfoType.Parent) continue;
+                    switch (tb.Type)
+                    {
+                        case SelectTableInfoType.LeftJoin:
+                            sb.Append(" \r\nLEFT JOIN ");
+                            break;
+                        case SelectTableInfoType.InnerJoin:
+                            sb.Append(" \r\nINNER JOIN ");
+                            break;
+                        case SelectTableInfoType.RightJoin:
+                            sb.Append(" \r\nRIGHT JOIN ");
+                            break;
+                    }
+                    sb.Append(_commonUtils.QuoteSqlName(tbUnion[tb.Table.Type])).Append(" ").Append(tb.Alias).Append(" ON ").Append(tb.On ?? tb.NavigateCondition);
+                    if (!string.IsNullOrEmpty(tb.Cascade)) sb.Append(" AND (").Append(tb.Cascade).Append(")");
+                    if (!string.IsNullOrEmpty(tb.On) && !string.IsNullOrEmpty(tb.NavigateCondition)) sbnav.Append(" AND (").Append(tb.NavigateCondition).Append(")");
+                }
+                if (_join.Length > 0) sb.Append(_join);
+
+                sbnav.Append(_where);
+                if (!string.IsNullOrEmpty(_tables[0].Cascade))
+                    sbnav.Append(" AND (").Append(_tables[0].Cascade).Append(")");
+
+                foreach (var tb in _tables)
+                {
+                    if (tb.Type == SelectTableInfoType.Parent) continue;
+                    if (string.IsNullOrEmpty(tb.Table.SelectFilter) == false)
+                        sbnav.Append(" AND (").Append(tb.Table.SelectFilter.Replace("a.", $"{tb.Alias}.")).Append(")");
+                }
+                if (sbnav.Length > 0)
+                {
+                    sb.Append(" \r\nWHERE ").Append(sbnav.Remove(0, 5));
+                }
+                if (string.IsNullOrEmpty(_groupby) == false)
+                {
+                    sb.Append(_groupby);
+                    if (string.IsNullOrEmpty(_having) == false)
+                        sb.Append(" \r\nHAVING ").Append(_having.Substring(5));
+                }
+                if (_skip <= 0)
+                    sb.Append(_orderby);
+                else
+                    sb.Insert(0, "WITH t AS ( ").Append(" ) SELECT t.* FROM t where __rownum__ > ").Append(_skip);
+
+                sbnav.Clear();
+                if (_limit > 0 && _utils.Adapter.SelectTopStyle == OdbcAdapter.SelecTopStyle.Limit) sb.Append(" \r\nLIMIT ").Append(_skip + _limit);
+                if (tbUnionsGt0) sb.Append(") ftb");
+            }
+            return sb.ToString();
+        }
+
+        public OdbcSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override ISelect<T1, T2> From<T2>(Expression<Func<ISelectFromExpression<T1>, T2, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcSelect<T1, T2>(_orm, _commonUtils, _commonExpression, null); OdbcSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3> From<T2, T3>(Expression<Func<ISelectFromExpression<T1>, T2, T3, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcSelect<T1, T2, T3>(_orm, _commonUtils, _commonExpression, null); OdbcSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4> From<T2, T3, T4>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcSelect<T1, T2, T3, T4>(_orm, _commonUtils, _commonExpression, null); OdbcSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5> From<T2, T3, T4, T5>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcSelect<T1, T2, T3, T4, T5>(_orm, _commonUtils, _commonExpression, null); OdbcSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6> From<T2, T3, T4, T5, T6>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcSelect<T1, T2, T3, T4, T5, T6>(_orm, _commonUtils, _commonExpression, null); OdbcSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6, T7> From<T2, T3, T4, T5, T6, T7>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcSelect<T1, T2, T3, T4, T5, T6, T7>(_orm, _commonUtils, _commonExpression, null); OdbcSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6, T7, T8> From<T2, T3, T4, T5, T6, T7, T8>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, T8, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcSelect<T1, T2, T3, T4, T5, T6, T7, T8>(_orm, _commonUtils, _commonExpression, null); OdbcSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9> From<T2, T3, T4, T5, T6, T7, T8, T9>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, T8, T9, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9>(_orm, _commonUtils, _commonExpression, null); OdbcSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> From<T2, T3, T4, T5, T6, T7, T8, T9, T10>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, T8, T9, T10, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>(_orm, _commonUtils, _commonExpression, null); OdbcSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override string ToSql(string field = null) => ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+    class OdbcSelect<T1, T2> : FreeSql.Internal.CommonProvider.Select2Provider<T1, T2> where T1 : class where T2 : class
+    {
+        public OdbcSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override string ToSql(string field = null) => OdbcSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+    class OdbcSelect<T1, T2, T3> : FreeSql.Internal.CommonProvider.Select3Provider<T1, T2, T3> where T1 : class where T2 : class where T3 : class
+    {
+        public OdbcSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override string ToSql(string field = null) => OdbcSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+    class OdbcSelect<T1, T2, T3, T4> : FreeSql.Internal.CommonProvider.Select4Provider<T1, T2, T3, T4> where T1 : class where T2 : class where T3 : class where T4 : class
+    {
+        public OdbcSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override string ToSql(string field = null) => OdbcSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+    class OdbcSelect<T1, T2, T3, T4, T5> : FreeSql.Internal.CommonProvider.Select5Provider<T1, T2, T3, T4, T5> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class
+    {
+        public OdbcSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override string ToSql(string field = null) => OdbcSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+    class OdbcSelect<T1, T2, T3, T4, T5, T6> : FreeSql.Internal.CommonProvider.Select6Provider<T1, T2, T3, T4, T5, T6> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class
+    {
+        public OdbcSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override string ToSql(string field = null) => OdbcSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+    class OdbcSelect<T1, T2, T3, T4, T5, T6, T7> : FreeSql.Internal.CommonProvider.Select7Provider<T1, T2, T3, T4, T5, T6, T7> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class
+    {
+        public OdbcSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override string ToSql(string field = null) => OdbcSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+    class OdbcSelect<T1, T2, T3, T4, T5, T6, T7, T8> : FreeSql.Internal.CommonProvider.Select8Provider<T1, T2, T3, T4, T5, T6, T7, T8> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class where T8 : class
+    {
+        public OdbcSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override string ToSql(string field = null) => OdbcSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+    class OdbcSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9> : FreeSql.Internal.CommonProvider.Select9Provider<T1, T2, T3, T4, T5, T6, T7, T8, T9> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class where T8 : class where T9 : class
+    {
+        public OdbcSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override string ToSql(string field = null) => OdbcSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+    class OdbcSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> : FreeSql.Internal.CommonProvider.Select10Provider<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class where T8 : class where T9 : class where T10 : class
+    {
+        public OdbcSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override string ToSql(string field = null) => OdbcSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+}

Providers/FreeSql.Provider.Odbc/Default/Curd/OdbcUpdate.cs

@@ -0,0 +1,64 @@
+using FreeSql.Internal;
+using FreeSql.Internal.Model;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FreeSql.Odbc.Default
+{
+
+    class OdbcUpdate<T1> : Internal.CommonProvider.UpdateProvider<T1> where T1 : class
+    {
+        OdbcUtils _utils;
+        public OdbcUpdate(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere)
+            : base(orm, commonUtils, commonExpression, dywhere)
+        {
+            _utils = _commonUtils as OdbcUtils;
+        }
+
+        public override int ExecuteAffrows() => base.SplitExecuteAffrows(_utils.Adapter.InsertBatchSplitLimit, 255);
+        public override Task<int> ExecuteAffrowsAsync() => base.SplitExecuteAffrowsAsync(_utils.Adapter.InsertBatchSplitLimit, 255);
+        public override List<T1> ExecuteUpdated() => base.SplitExecuteUpdated(_utils.Adapter.InsertBatchSplitLimit, 255);
+        public override Task<List<T1>> ExecuteUpdatedAsync() => base.SplitExecuteUpdatedAsync(_utils.Adapter.InsertBatchSplitLimit, 255);
+
+        protected override List<T1> RawExecuteUpdated() => throw new NotImplementedException("FreeSql.Odbc.Default 未实现该功能");
+        protected override Task<List<T1>> RawExecuteUpdatedAsync() => throw new NotImplementedException("FreeSql.Odbc.Default 未实现该功能");
+
+        protected override void ToSqlCase(StringBuilder caseWhen, ColumnInfo[] primarys)
+        {
+            if (_table.Primarys.Length == 1)
+            {
+                caseWhen.Append(_commonUtils.QuoteReadColumn(_table.Primarys.First().Attribute.MapType, _commonUtils.QuoteSqlName(_table.Primarys.First().Attribute.Name)));
+                return;
+            }
+            caseWhen.Append("(");
+            var pkidx = 0;
+            foreach (var pk in _table.Primarys)
+            {
+                if (pkidx > 0) caseWhen.Append(", ");
+                caseWhen.Append(_utils.Adapter.CastSql(_commonUtils.QuoteReadColumn(_table.Primarys.First().Attribute.MapType, _commonUtils.QuoteSqlName(pk.Attribute.Name)), _utils.Adapter.MappingOdbcTypeVarChar));
+                ++pkidx;
+            }
+            caseWhen.Append(")");
+        }
+
+        protected override void ToSqlWhen(StringBuilder sb, ColumnInfo[] primarys, object d)
+        {
+            if (_table.Primarys.Length == 1)
+            {
+                sb.Append(_commonUtils.FormatSql("{0}", _table.Primarys.First().GetMapValue(d)));
+                return;
+            }
+            var pkidx = 0;
+            foreach (var pk in _table.Primarys)
+            {
+                if (pkidx > 0) sb.Append(", ");
+                sb.Append(_utils.Adapter.CastSql(_commonUtils.FormatSql("{0}", pk.GetMapValue(d)), _utils.Adapter.MappingOdbcTypeVarChar));
+                ++pkidx;
+            }
+        }
+    }
+}

Providers/FreeSql.Provider.Odbc/Default/OdbcAdapter.cs

@@ -0,0 +1,173 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace FreeSql.Odbc.Default
+{
+    public class OdbcAdapter
+    {
+        /// <summary>
+        /// Select TOP 1，或 Limit 1 风格
+        /// </summary>
+        public virtual SelecTopStyle SelectTopStyle => SelecTopStyle.Top;
+        public enum SelecTopStyle { Top, Limit }
+        
+        /// <summary>
+        /// 插入成功后，获取自增值
+        /// </summary>
+        public virtual string InsertAfterGetIdentitySql => "SELECT SCOPE_IDENTITY()";
+        /// <summary>
+        /// 批量插入时，自动拆分的每次执行数量
+        /// </summary>
+        public virtual int InsertBatchSplitLimit => 255;
+        /// <summary>
+        /// 批量更新时，自动拆分的每次执行数量
+        /// </summary>
+        public virtual int UpdateBatchSplitLimit => 255;
+
+        public virtual string MappingOdbcTypeBit => "int";
+        public virtual string MappingOdbcTypeSmallInt => "smallint";
+        public virtual string MappingOdbcTypeInt => "int";
+        public virtual string MappingOdbcTypeBigInt => "bigint";
+        public virtual string MappingOdbcTypeTinyInt => "tinyint";
+        public virtual string MappingOdbcTypeDecimal => "decimal";
+        public virtual string MappingOdbcTypeDouble => "float";
+        public virtual string MappingOdbcTypeReal => "real";
+        public virtual string MappingOdbcTypeDateTime => "datetime";
+        public virtual string MappingOdbcTypeVarBinary => "varbinary";
+        public virtual string MappingOdbcTypeVarChar => "nvarchar";
+        public virtual string MappingOdbcTypeText => "nvarchar(max)";
+        public virtual string MappingOdbcTypeUniqueIdentifier => "uniqueidentifier";
+
+        public virtual char QuoteSqlNameLeft => '[';
+        public virtual char QuoteSqlNameRight => ']';
+
+        public virtual string FieldSql(Type type, string columnName) => columnName;
+        public virtual string UnicodeStringRawSql(object value) => value == null ? "NULL" : string.Concat("N'", value.ToString().Replace("'", "''"), "'");
+        public virtual string DateTimeRawSql(object value)
+        {
+            if (value == null) return "NULL";
+            if (value.Equals(DateTime.MinValue) == true) value = new DateTime(1970, 1, 1);
+            return string.Concat("'", ((DateTime)value).ToString("yyyy-MM-dd HH:mm:ss"), "'");
+        }
+        public virtual string TimeSpanRawSql(object value) => value == null ? "NULL" : ((TimeSpan)value).TotalSeconds.ToString();
+        public virtual string ByteRawSql(object value)
+        {
+            if (value == null) return "NULL";
+            var bytes = value as byte[];
+            var sb = new StringBuilder().Append("0x");
+            foreach (var vc in bytes)
+            {
+                if (vc < 10) sb.Append("0");
+                sb.Append(vc.ToString("X"));
+            }
+            return sb.ToString();
+        }
+
+        public virtual string CastSql(string sql, string to) => $"cast({sql} as {to})";
+        public virtual string IsNullSql(string sql, object value) => $"isnull({sql}, {value})";
+        public virtual string ConcatSql(string[] objs, Type[] types)
+        {
+            var sb = new StringBuilder();
+            var news = new string[objs.Length];
+            for (var a = 0; a < objs.Length; a++)
+                news[a] = types[a] == typeof(string) ? objs[a] : $"cast({objs[a]} as nvarchar)";
+            return string.Join(" + ", news);
+        }
+
+        public virtual string Mod(string left, string right, Type leftType, Type rightType) => $"{left} % {right}";
+        public virtual string Div(string left, string right, Type leftType, Type rightType) => $"{left} / {right}";
+
+        public virtual string LambdaConvert_ToBoolean(Type type, string operand) => $"(cast({operand} as varchar) not in ('0','false'))";
+        public virtual string LambdaConvert_ToByte(Type type, string operand) => $"cast({operand} as tinyint)";
+        public virtual string LambdaConvert_ToChar(Type type, string operand) => $"substring(cast({operand} as varchar),1,1)";
+        public virtual string LambdaConvert_ToDateTime(Type type, string operand) => $"cast({operand} as datetime)";
+        public virtual string LambdaConvert_ToDecimal(Type type, string operand) => $"cast({operand} as decimal(36,18))";
+        public virtual string LambdaConvert_ToDouble(Type type, string operand) => $"cast({operand} as decimal(32,16))";
+        public virtual string LambdaConvert_ToInt16(Type type, string operand) => $"cast({operand} as smallint)";
+        public virtual string LambdaConvert_ToInt32(Type type, string operand) => $"cast({operand} as int)";
+        public virtual string LambdaConvert_ToInt64(Type type, string operand) => $"cast({operand} as bigint)";
+        public virtual string LambdaConvert_ToSByte(Type type, string operand) => $"cast({operand} as tinyint)";
+        public virtual string LambdaConvert_ToSingle(Type type, string operand) => $"cast({operand} as decimal(14,7))";
+        public virtual string LambdaConvert_ToString(Type type, string operand) => type.NullableTypeOrThis() == typeof(Guid) ? $"cast({operand} as varchar(36))" : $"cast({operand} as nvarchar)";
+        public virtual string LambdaConvert_ToUInt16(Type type, string operand) => $"cast({operand} as smallint)";
+        public virtual string LambdaConvert_ToUInt32(Type type, string operand) => $"cast({operand} as int)";
+        public virtual string LambdaConvert_ToUInt64(Type type, string operand) => $"cast({operand} as bigint)";
+        public virtual string LambdaConvert_ToGuid(Type type, string operand) => $"cast({operand} as uniqueidentifier)";
+
+        public virtual string LambdaGuid_NewGuid => "newid()";
+        public virtual string LambdaRandom_Next => "cast(rand()*1000000000 as int)";
+        public virtual string LambdaRandom_NextDouble => "rand()";
+
+        public virtual string LambdaString_IsNullOrEmpty(string operand) => $"({operand} is null or {operand} = '')";
+        public virtual string LambdaString_IsNullOrWhiteSpace(string operand) => $"({operand} is null or {operand} = '' or ltrim({operand}) = '')";
+        public virtual string LambdaString_Length(string operand) => $"len({operand})";
+
+        public virtual string LambdaString_ToLower(string operand) => $"lower({operand})";
+        public virtual string LambdaString_ToUpper(string operand) => $"upper({operand})";
+        public virtual string LambdaString_Substring(string operand, string startIndex, string length) => string.IsNullOrEmpty(length) ? $"left({operand}, {startIndex})" : $"substring({operand}, {startIndex}, {length})";
+        public virtual string LambdaString_IndexOf(string operand, string value, string startIndex) => string.IsNullOrEmpty(startIndex) ? $"(charindex({operand}, {value})-1)" : $"(charindex({operand}, {value}, {startIndex})-1)";
+        public virtual string LambdaString_PadLeft(string operand, string length, string paddingChar) => string.IsNullOrEmpty(paddingChar) ? $"lpad({operand}, {length})" : $"lpad({operand}, {length}, {paddingChar})";
+        public virtual string LambdaString_PadRight(string operand, string length, string paddingChar) => string.IsNullOrEmpty(paddingChar) ? $"rpad({operand}, {length})" : $"rpad({operand}, {length}, {paddingChar})";
+        public virtual string LambdaString_Trim(string operand) => $"ltrim(rtrim({operand}))";
+        public virtual string LambdaString_TrimStart(string operand) => $"ltrim({operand})";
+        public virtual string LambdaString_TrimEnd(string operand) => $"rtrim({operand})";
+        public virtual string LambdaString_Replace(string operand, string oldValue, string newValue) => $"replace({operand}, {oldValue}, {newValue})";
+        public virtual string LambdaString_CompareTo(string operand, string value) => $"({operand} - {value})";
+        public virtual string LambdaString_Equals(string operand, string value) => $"({operand} = {value})";
+
+        public virtual string LambdaDateTime_Now => "getdate()";
+        public virtual string LambdaDateTime_UtcNow => "getutcdate()";
+        public virtual string LambdaDateTime_Today => "convert(char(10),getdate(),120)";
+        public virtual string LambdaDateTime_MinValue => "'1753/1/1 0:00:00'";
+        public virtual string LambdaDateTime_MaxValue => "'9999/12/31 23:59:59'";
+        public virtual string LambdaDateTime_Date(string operand) => $"convert(char(10),{operand},120)";
+        public virtual string LambdaDateTime_TimeOfDay(string operand) => $"datediff(second, convert(char(10),{operand},120), {operand})";
+        public virtual string LambdaDateTime_DayOfWeek(string operand) => $"(datepart(weekday, {operand})-1)";
+        public virtual string LambdaDateTime_Day(string operand) => $"datepart(day, {operand})";
+        public virtual string LambdaDateTime_DayOfYear(string operand) => $"datepart(dayofyear, {operand})";
+        public virtual string LambdaDateTime_Month(string operand) => $"datepart(month, {operand})";
+        public virtual string LambdaDateTime_Year(string operand) => $"datepart(year, {operand})";
+        public virtual string LambdaDateTime_Hour(string operand) => $"datepart(hour, {operand})";
+        public virtual string LambdaDateTime_Minute(string operand) => $"datepart(minute, {operand})";
+        public virtual string LambdaDateTime_Second(string operand) => $"datepart(second, {operand})";
+        public virtual string LambdaDateTime_Millisecond(string operand) => $"(datepart(millisecond, {operand})/1000)";
+        public virtual string LambdaDateTime_Ticks(string operand) => $"(cast(datediff(second, '1970-1-1', {operand}) as bigint)*10000000+621355968000000000)";
+
+        public virtual string LambdaDateTime_DaysInMonth(string year, string month) => $"datepart(day, dateadd(day, -1, dateadd(month, 1, cast({year} as varchar) + '-' + cast({month} as varchar) + '-1')))";
+        public virtual string LambdaDateTime_IsLeapYear(string year) => $"(({year})%4=0 AND ({year})%100<>0 OR ({year})%400=0)";
+        public virtual string LambdaDateTime_Add(string operand, string value) => $"dateadd(second, {value}, {operand})";
+        public virtual string LambdaDateTime_AddDays(string operand, string value) => $"dateadd(day, {value}, {operand})";
+        public virtual string LambdaDateTime_AddHours(string operand, string value) => $"dateadd(hour, {value}, {operand})";
+        public virtual string LambdaDateTime_AddMilliseconds(string operand, string value) => $"dateadd(second, ({value})/1000, {operand})";
+        public virtual string LambdaDateTime_AddMinutes(string operand, string value) => $"dateadd(minute, {value}, {operand})";
+        public virtual string LambdaDateTime_AddMonths(string operand, string value) => $"dateadd(month, {value}, {operand})";
+        public virtual string LambdaDateTime_AddSeconds(string operand, string value) => $"dateadd(second, {value}, {operand})";
+        public virtual string LambdaDateTime_AddTicks(string operand, string value) => $"dateadd(second, ({value})/10000000, {operand})";
+        public virtual string LambdaDateTime_AddYears(string operand, string value) => $"dateadd(year, {value}, {operand})";
+        public virtual string LambdaDateTime_Subtract(string operand, string value) => $"datediff(second, {value}, {operand})";
+        public virtual string LambdaDateTime_SubtractTimeSpan(string operand, string value) => $"dateadd(second, ({value})*-1, {operand})";
+        public virtual string LambdaDateTime_Equals(string operand, string value) => $"({operand} = {value})";
+        public virtual string LambdaDateTime_CompareTo(string operand, string value) => $"datediff(second,{value},{operand})";
+        public virtual string LambdaDateTime_ToString(string operand) => $"convert(varchar, {operand}, 121)";
+
+        public virtual string LambdaMath_Abs(string operand) => $"abs({operand})";
+        public virtual string LambdaMath_Sign(string operand) => $"sign({operand})";
+        public virtual string LambdaMath_Floor(string operand) => $"floor({operand})";
+        public virtual string LambdaMath_Ceiling(string operand) => $"ceiling({ operand})";
+        public virtual string LambdaMath_Round(string operand, string decimals) => $"round({operand}, {decimals})";
+        public virtual string LambdaMath_Exp(string operand) => $"exp({operand})";
+        public virtual string LambdaMath_Log(string operand) => $"log({operand})";
+        public virtual string LambdaMath_Log10(string operand) => $"log10({operand})";
+        public virtual string LambdaMath_Pow(string operand, string y) => $"power({operand}, {y})";
+        public virtual string LambdaMath_Sqrt(string operand) => $"sqrt({operand})";
+        public virtual string LambdaMath_Cos(string operand) => $"cos({operand})";
+        public virtual string LambdaMath_Sin(string operand) => $"sin({operand})";
+        public virtual string LambdaMath_Tan(string operand) => $"tan({operand})";
+        public virtual string LambdaMath_Acos(string operand) => $"acos({operand})";
+        public virtual string LambdaMath_Asin(string operand) => $"asin({operand})";
+        public virtual string LambdaMath_Atan(string operand) => $"atan({operand})";
+        public virtual string LambdaMath_Atan2(string operand, string x) => $"atan2({operand}, {x})";
+        public virtual string LambdaMath_Truncate(string operand) => $"floor({operand})";
+    }
+}

Providers/FreeSql.Provider.Odbc/Default/OdbcAdo/OdbcAdo.cs

@@ -0,0 +1,73 @@
+using FreeSql.Internal;
+using SafeObjectPool;
+using System;
+using System.Collections;
+using System.Data.Common;
+using System.Data.Odbc;
+using System.Text;
+using System.Threading;
+
+namespace FreeSql.Odbc.Default
+{
+    class OdbcAdo : FreeSql.Internal.CommonProvider.AdoProvider
+    {
+        public OdbcAdo() : base(DataType.Odbc) { }
+        public OdbcAdo(CommonUtils util, string masterConnectionString, string[] slaveConnectionStrings) : base(DataType.Odbc)
+        {
+            base._util = util;
+            if (!string.IsNullOrEmpty(masterConnectionString))
+                MasterPool = new OdbcConnectionPool("主库", masterConnectionString, null, null);
+            if (slaveConnectionStrings != null)
+            {
+                foreach (var slaveConnectionString in slaveConnectionStrings)
+                {
+                    var slavePool = new OdbcConnectionPool($"从库{SlavePools.Count + 1}", slaveConnectionString, () => Interlocked.Decrement(ref slaveUnavailables), () => Interlocked.Increment(ref slaveUnavailables));
+                    SlavePools.Add(slavePool);
+                }
+            }
+        }
+        OdbcAdapter Adapter => (_util == null ? FreeSqlOdbcGlobalExtensions.DefaultOdbcAdapter : _util._orm.GetOdbcAdapter());
+
+        static DateTime dt1970 = new DateTime(1970, 1, 1);
+        public override object AddslashesProcessParam(object param, Type mapType)
+        {
+            if (param == null) return "NULL";
+            if (mapType != null && mapType != param.GetType())
+                param = Utils.GetDataReaderValue(mapType, param);
+            if (param is bool || param is bool?)
+                return (bool)param ? 1 : 0;
+            else if (param is string)
+                return Adapter.UnicodeStringRawSql(param);
+            else if (param is char)
+                return string.Concat("'", param.ToString().Replace("'", "''"), "'");
+            else if (param is Enum)
+                return ((Enum)param).ToInt64();
+            else if (decimal.TryParse(string.Concat(param), out var trydec))
+                return param;
+            else if (param is DateTime || param is DateTime?)
+                return Adapter.DateTimeRawSql(param);
+            else if (param is TimeSpan || param is TimeSpan?)
+                return Adapter.TimeSpanRawSql(param);
+            else if (param is IEnumerable)
+            {
+                var sb = new StringBuilder();
+                var ie = param as IEnumerable;
+                foreach (var z in ie) sb.Append(",").Append(AddslashesProcessParam(z, mapType));
+                return sb.Length == 0 ? "(NULL)" : sb.Remove(0, 1).Insert(0, "(").Append(")").ToString();
+            }
+            return string.Concat("'", param.ToString().Replace("'", "''"), "'");
+        }
+
+        protected override DbCommand CreateCommand()
+        {
+            return new OdbcCommand();
+        }
+
+        protected override void ReturnConnection(ObjectPool<DbConnection> pool, Object<DbConnection> conn, Exception ex)
+        {
+            (pool as OdbcConnectionPool).Return(conn, ex);
+        }
+
+        protected override DbParameter[] GetDbParamtersByObject(string sql, object obj) => _util.GetDbParamtersByObject(sql, obj);
+    }
+}

Providers/FreeSql.Provider.Odbc/Default/OdbcAdo/OdbcConnectionPool.cs

@@ -0,0 +1,236 @@
+using SafeObjectPool;
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Data;
+using System.Data.Common;
+using System.Data.Odbc;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+
+namespace FreeSql.Odbc.Default
+{
+
+    class OdbcConnectionPool : ObjectPool<DbConnection>
+    {
+
+        internal Action availableHandler;
+        internal Action unavailableHandler;
+
+        public OdbcConnectionPool(string name, string connectionString, Action availableHandler, Action unavailableHandler) : base(null)
+        {
+            var policy = new OdbcConnectionPoolPolicy
+            {
+                _pool = this,
+                Name = name
+            };
+            this.Policy = policy;
+            policy.ConnectionString = connectionString;
+
+            this.availableHandler = availableHandler;
+            this.unavailableHandler = unavailableHandler;
+        }
+
+        public void Return(Object<DbConnection> obj, Exception exception, bool isRecreate = false)
+        {
+            if (exception != null && exception is OdbcException)
+            {
+
+                if (obj.Value.Ping() == false)
+                {
+
+                    base.SetUnavailable(exception);
+                }
+            }
+            base.Return(obj, isRecreate);
+        }
+    }
+
+    class OdbcConnectionPoolPolicy : IPolicy<DbConnection>
+    {
+
+        internal OdbcConnectionPool _pool;
+        public string Name { get; set; } = "Default OdbcConnection 对象池";
+        public int PoolSize { get; set; } = 100;
+        public TimeSpan SyncGetTimeout { get; set; } = TimeSpan.FromSeconds(10);
+        public TimeSpan IdleTimeout { get; set; } = TimeSpan.Zero;
+        public int AsyncGetCapacity { get; set; } = 10000;
+        public bool IsThrowGetTimeoutException { get; set; } = true;
+        public int CheckAvailableInterval { get; set; } = 5;
+
+        static ConcurrentDictionary<string, int> dicConnStrIncr = new ConcurrentDictionary<string, int>(StringComparer.CurrentCultureIgnoreCase);
+        private string _connectionString;
+        public string ConnectionString
+        {
+            get => _connectionString;
+            set
+            {
+                _connectionString = value ?? "";
+
+                var pattern = @"Max\s*pool\s*size\s*=\s*(\d+)";
+                Match m = Regex.Match(_connectionString, pattern, RegexOptions.IgnoreCase);
+                if (m.Success == false || int.TryParse(m.Groups[1].Value, out var poolsize) == false || poolsize <= 0) poolsize = 100;
+                var connStrIncr = dicConnStrIncr.AddOrUpdate(_connectionString, 1, (oldkey, oldval) => oldval + 1);
+                PoolSize = poolsize + connStrIncr;
+                _connectionString = m.Success ?
+                    Regex.Replace(_connectionString, pattern, $"Max pool size={PoolSize}", RegexOptions.IgnoreCase) :
+                    $"{_connectionString};Max pool size={PoolSize}";
+
+                pattern = @"Connection\s*LifeTime\s*=\s*(\d+)";
+                m = Regex.Match(_connectionString, pattern, RegexOptions.IgnoreCase);
+                if (m.Success)
+                {
+                    IdleTimeout = TimeSpan.FromSeconds(int.Parse(m.Groups[1].Value));
+                    _connectionString = Regex.Replace(_connectionString, pattern, "", RegexOptions.IgnoreCase);
+                }
+
+                var minPoolSize = 0;
+                pattern = @"Min\s*pool\s*size\s*=\s*(\d+)";
+                m = Regex.Match(_connectionString, pattern, RegexOptions.IgnoreCase);
+                if (m.Success)
+                {
+                    minPoolSize = int.Parse(m.Groups[1].Value);
+                    _connectionString = Regex.Replace(_connectionString, pattern, "", RegexOptions.IgnoreCase);
+                }
+
+                FreeSql.Internal.CommonUtils.PrevReheatConnectionPool(_pool, minPoolSize);
+            }
+        }
+
+        public bool OnCheckAvailable(Object<DbConnection> obj)
+        {
+            if (obj.Value.State == ConnectionState.Closed) obj.Value.Open();
+            return obj.Value.Ping(true);
+        }
+
+        public DbConnection OnCreate()
+        {
+            var conn = new OdbcConnection(_connectionString);
+            return conn;
+        }
+
+        public void OnDestroy(DbConnection obj)
+        {
+            if (obj.State != ConnectionState.Closed) obj.Close();
+            obj.Dispose();
+        }
+
+        public void OnGet(Object<DbConnection> obj)
+        {
+
+            if (_pool.IsAvailable)
+            {
+
+                if (obj.Value == null)
+                {
+                    if (_pool.SetUnavailable(new Exception("连接字符串错误")) == true)
+                        throw new Exception($"【{this.Name}】连接字符串错误，请检查。");
+                    return;
+                }
+
+                if (obj.Value.State != ConnectionState.Open || DateTime.Now.Subtract(obj.LastReturnTime).TotalSeconds > 60 && obj.Value.Ping() == false)
+                {
+
+                    try
+                    {
+                        obj.Value.Open();
+                    }
+                    catch (Exception ex)
+                    {
+                        if (_pool.SetUnavailable(ex) == true)
+                            throw new Exception($"【{this.Name}】状态不可用，等待后台检查程序恢复方可使用。{ex.Message}");
+                    }
+                }
+            }
+        }
+
+        async public Task OnGetAsync(Object<DbConnection> obj)
+        {
+
+            if (_pool.IsAvailable)
+            {
+
+                if (obj.Value == null)
+                {
+                    if (_pool.SetUnavailable(new Exception("连接字符串错误")) == true)
+                        throw new Exception($"【{this.Name}】连接字符串错误，请检查。");
+                    return;
+                }
+
+                if (obj.Value.State != ConnectionState.Open || DateTime.Now.Subtract(obj.LastReturnTime).TotalSeconds > 60 && (await obj.Value.PingAsync()) == false)
+                {
+
+                    try
+                    {
+                        await obj.Value.OpenAsync();
+                    }
+                    catch (Exception ex)
+                    {
+                        if (_pool.SetUnavailable(ex) == true)
+                            throw new Exception($"【{this.Name}】状态不可用，等待后台检查程序恢复方可使用。{ex.Message}");
+                    }
+                }
+            }
+        }
+
+        public void OnGetTimeout()
+        {
+
+        }
+
+        public void OnReturn(Object<DbConnection> obj)
+        {
+            if (obj.Value.State != ConnectionState.Closed) try { obj.Value.Close(); } catch { }
+        }
+
+        public void OnAvailable()
+        {
+            _pool.availableHandler?.Invoke();
+        }
+
+        public void OnUnavailable()
+        {
+            _pool.unavailableHandler?.Invoke();
+        }
+    }
+
+    static class DbConnectionExtensions
+    {
+
+        static DbCommand PingCommand(DbConnection conn)
+        {
+            var cmd = conn.CreateCommand();
+            cmd.CommandTimeout = 5;
+            cmd.CommandText = "select 1";
+            return cmd;
+        }
+        public static bool Ping(this DbConnection that, bool isThrow = false)
+        {
+            try
+            {
+                PingCommand(that).ExecuteNonQuery();
+                return true;
+            }
+            catch
+            {
+                if (that.State != ConnectionState.Closed) try { that.Close(); } catch { }
+                if (isThrow) throw;
+                return false;
+            }
+        }
+        async public static Task<bool> PingAsync(this DbConnection that, bool isThrow = false)
+        {
+            try
+            {
+                await PingCommand(that).ExecuteNonQueryAsync();
+                return true;
+            }
+            catch
+            {
+                if (that.State != ConnectionState.Closed) try { that.Close(); } catch { }
+                if (isThrow) throw;
+                return false;
+            }
+        }
+    }
+}

Providers/FreeSql.Provider.Odbc/Default/OdbcCodeFirst.cs

@@ -0,0 +1,90 @@
+using FreeSql.Internal;
+using FreeSql.Internal.Model;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Data.Odbc;
+using System.Linq;
+using System.Text;
+using System.Text.RegularExpressions;
+
+namespace FreeSql.Odbc.Default
+{
+
+    class OdbcCodeFirst : Internal.CommonProvider.CodeFirstProvider
+    {
+        public override bool IsAutoSyncStructure { get => false; set => base.IsAutoSyncStructure = false; }
+        public override bool IsNoneCommandParameter { get => true; set => base.IsNoneCommandParameter = true; }
+        public OdbcCodeFirst(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression) : base(orm, commonUtils, commonExpression)
+        {
+            _utils = _commonUtils as OdbcUtils;
+        }
+
+        OdbcUtils _utils;
+        object _dicCsToDbLock = new object();
+        Dictionary<string, (OdbcType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable, object defaultValue)> _dicCsToDb;
+
+        public override (int type, string dbtype, string dbtypeFull, bool? isnullable, object defaultValue)? GetDbInfo(Type type)
+        {
+            if (_dicCsToDb == null)
+            {
+                lock (_dicCsToDbLock)
+                {
+                    if (_dicCsToDb == null)
+                    {
+                        var reg = new Regex(@"\([^\)]+\)", RegexOptions.IgnoreCase | RegexOptions.Compiled);
+                        Func<string, string> deleteBrackets = str => reg.Replace(str, "");
+
+                        _dicCsToDb = new Dictionary<string, (OdbcType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable, object defaultValue)>() {
+                            { typeof(bool).FullName,  (OdbcType.Bit, _utils.Adapter.MappingOdbcTypeBit,$"{_utils.Adapter.MappingOdbcTypeBit} NOT NULL", null, false, false) },{ typeof(bool?).FullName,  (OdbcType.Bit, _utils.Adapter.MappingOdbcTypeBit,_utils.Adapter.MappingOdbcTypeBit, null, true, null) },
+
+                            { typeof(sbyte).FullName,  (OdbcType.SmallInt, _utils.Adapter.MappingOdbcTypeSmallInt, $"{_utils.Adapter.MappingOdbcTypeSmallInt} NOT NULL", false, false, 0) },{ typeof(sbyte?).FullName,  (OdbcType.SmallInt, _utils.Adapter.MappingOdbcTypeSmallInt, _utils.Adapter.MappingOdbcTypeSmallInt, false, true, null) },
+                            { typeof(short).FullName,  (OdbcType.SmallInt, _utils.Adapter.MappingOdbcTypeSmallInt,$"{_utils.Adapter.MappingOdbcTypeSmallInt} NOT NULL", false, false, 0) },{ typeof(short?).FullName,  (OdbcType.SmallInt, _utils.Adapter.MappingOdbcTypeSmallInt, _utils.Adapter.MappingOdbcTypeSmallInt, false, true, null) },
+                            { typeof(int).FullName,  (OdbcType.Int, _utils.Adapter.MappingOdbcTypeInt, $"{_utils.Adapter.MappingOdbcTypeInt} NOT NULL", false, false, 0) },{ typeof(int?).FullName,  (OdbcType.Int, _utils.Adapter.MappingOdbcTypeInt, _utils.Adapter.MappingOdbcTypeInt, false, true, null) },
+                            { typeof(long).FullName,  (OdbcType.BigInt, _utils.Adapter.MappingOdbcTypeBigInt,$"{_utils.Adapter.MappingOdbcTypeBigInt} NOT NULL", false, false, 0) },{ typeof(long?).FullName,  (OdbcType.BigInt, _utils.Adapter.MappingOdbcTypeBigInt,_utils.Adapter.MappingOdbcTypeBigInt, false, true, null) },
+
+                            { typeof(byte).FullName,  (OdbcType.TinyInt, _utils.Adapter.MappingOdbcTypeTinyInt,$"{_utils.Adapter.MappingOdbcTypeTinyInt} NOT NULL", true, false, 0) },{ typeof(byte?).FullName,  (OdbcType.TinyInt, _utils.Adapter.MappingOdbcTypeTinyInt,_utils.Adapter.MappingOdbcTypeTinyInt, true, true, null) },
+                            { typeof(ushort).FullName,  (OdbcType.Int, _utils.Adapter.MappingOdbcTypeInt,$"{_utils.Adapter.MappingOdbcTypeInt} NOT NULL", true, false, 0) },{ typeof(ushort?).FullName,  (OdbcType.Int, _utils.Adapter.MappingOdbcTypeInt, _utils.Adapter.MappingOdbcTypeInt, true, true, null) },
+                            { typeof(uint).FullName,  (OdbcType.BigInt, _utils.Adapter.MappingOdbcTypeBigInt, $"{_utils.Adapter.MappingOdbcTypeBigInt} NOT NULL", true, false, 0) },{ typeof(uint?).FullName,  (OdbcType.BigInt, _utils.Adapter.MappingOdbcTypeBigInt, _utils.Adapter.MappingOdbcTypeBigInt, true, true, null) },
+                            { typeof(ulong).FullName,  (OdbcType.Decimal, _utils.Adapter.MappingOdbcTypeDecimal, $"{_utils.Adapter.MappingOdbcTypeDecimal}(20,0) NOT NULL", true, false, 0) },{ typeof(ulong?).FullName,  (OdbcType.Decimal, _utils.Adapter.MappingOdbcTypeDecimal, $"{_utils.Adapter.MappingOdbcTypeDecimal}(20,0)", true, true, null) },
+
+                            { typeof(double).FullName,  (OdbcType.Double, _utils.Adapter.MappingOdbcTypeDouble, $"{_utils.Adapter.MappingOdbcTypeDouble} NOT NULL", false, false, 0) },{ typeof(double?).FullName,  (OdbcType.Double, _utils.Adapter.MappingOdbcTypeDouble, _utils.Adapter.MappingOdbcTypeDouble, false, true, null) },
+                            { typeof(float).FullName,  (OdbcType.Real, _utils.Adapter.MappingOdbcTypeReal,$"{_utils.Adapter.MappingOdbcTypeReal} NOT NULL", false, false, 0) },{ typeof(float?).FullName,  (OdbcType.Real, _utils.Adapter.MappingOdbcTypeReal,_utils.Adapter.MappingOdbcTypeReal, false, true, null) },
+                            { typeof(decimal).FullName,  (OdbcType.Decimal, _utils.Adapter.MappingOdbcTypeDecimal, $"{_utils.Adapter.MappingOdbcTypeDecimal}(10,2) NOT NULL", false, false, 0) },{ typeof(decimal?).FullName,  (OdbcType.Decimal, _utils.Adapter.MappingOdbcTypeDecimal, $"{_utils.Adapter.MappingOdbcTypeDecimal}(10,2)", false, true, null) },
+
+                            { typeof(DateTime).FullName,  (OdbcType.DateTime, _utils.Adapter.MappingOdbcTypeDateTime, $"{_utils.Adapter.MappingOdbcTypeDateTime} NOT NULL", false, false, new DateTime(1970,1,1)) },{ typeof(DateTime?).FullName,  (OdbcType.DateTime, _utils.Adapter.MappingOdbcTypeDateTime, _utils.Adapter.MappingOdbcTypeDateTime, false, true, null) },
+
+                            { typeof(byte[]).FullName,  (OdbcType.VarBinary, _utils.Adapter.MappingOdbcTypeVarBinary, $"{_utils.Adapter.MappingOdbcTypeVarBinary}(255)", false, null, new byte[0]) },
+                            { typeof(string).FullName,  (OdbcType.VarChar, _utils.Adapter.MappingOdbcTypeVarChar, $"{_utils.Adapter.MappingOdbcTypeVarChar}(255)", false, null, "") },
+
+                            { typeof(Guid).FullName,  (OdbcType.UniqueIdentifier, deleteBrackets(_utils.Adapter.MappingOdbcTypeUniqueIdentifier), $"{_utils.Adapter.MappingOdbcTypeUniqueIdentifier} NOT NULL", false, false, Guid.Empty) },{ typeof(Guid?).FullName,  (OdbcType.UniqueIdentifier, deleteBrackets(_utils.Adapter.MappingOdbcTypeUniqueIdentifier), _utils.Adapter.MappingOdbcTypeUniqueIdentifier, false, true, null) },
+                        };
+                    }
+                }
+            }
+
+            if (_dicCsToDb.TryGetValue(type.FullName, out var trydc)) return new (int, string, string, bool?, object)?(((int)trydc.type, trydc.dbtype, trydc.dbtypeFull, trydc.isnullable, trydc.defaultValue));
+            if (type.IsArray) return null;
+            var enumType = type.IsEnum ? type : null;
+            if (enumType == null && type.IsNullableType() && type.GenericTypeArguments.Length == 1 && type.GenericTypeArguments.First().IsEnum) enumType = type.GenericTypeArguments.First();
+            if (enumType != null)
+            {
+                var newItem = enumType.GetCustomAttributes(typeof(FlagsAttribute), false).Any() ?
+                    (OdbcType.BigInt, _utils.Adapter.MappingOdbcTypeBigInt, $"{_utils.Adapter.MappingOdbcTypeBigInt}{(type.IsEnum ? " NOT NULL" : "")}", false, type.IsEnum ? false : true, Enum.GetValues(enumType).GetValue(0)) :
+                    (OdbcType.Int, _utils.Adapter.MappingOdbcTypeInt, $"{_utils.Adapter.MappingOdbcTypeInt}{(type.IsEnum ? " NOT NULL" : "")}", false, type.IsEnum ? false : true, Enum.GetValues(enumType).GetValue(0));
+                if (_dicCsToDb.ContainsKey(type.FullName) == false)
+                {
+                    lock (_dicCsToDbLock)
+                    {
+                        if (_dicCsToDb.ContainsKey(type.FullName) == false)
+                            _dicCsToDb.Add(type.FullName, newItem);
+                    }
+                }
+                return ((int)newItem.Item1, newItem.Item2, newItem.Item3, newItem.Item5, newItem.Item6);
+            }
+            return null;
+        }
+
+        public override string GetComparisonDDLStatements(params Type[] entityTypes) => throw new NotImplementedException("FreeSql.Odbc.Default 未实现该功能");
+    }
+}

Providers/FreeSql.Provider.Odbc/Default/OdbcExpression.cs

@@ -0,0 +1,441 @@
+using FreeSql.Internal;
+using FreeSql.Internal.Model;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+
+namespace FreeSql.Odbc.Default
+{
+    class OdbcExpression : CommonExpression
+    {
+        OdbcUtils _utils;
+        public OdbcExpression(CommonUtils common) : base(common)
+        {
+            _utils = common as OdbcUtils;
+        }
+
+        public override string ExpressionLambdaToSqlOther(Expression exp, ExpTSC tsc)
+        {
+            Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
+            switch (exp.NodeType)
+            {
+                case ExpressionType.Convert:
+                    var operandExp = (exp as UnaryExpression)?.Operand;
+                    var gentype = exp.Type.NullableTypeOrThis();
+                    if (gentype != operandExp.Type.NullableTypeOrThis())
+                    {
+                        switch (gentype.ToString())
+                        {
+                            case "System.Boolean": return _utils.Adapter.LambdaConvert_ToBoolean(operandExp.Type, getExp(operandExp));
+                            case "System.Byte": return _utils.Adapter.LambdaConvert_ToByte(operandExp.Type, getExp(operandExp));
+                            case "System.Char": return _utils.Adapter.LambdaConvert_ToChar(operandExp.Type, getExp(operandExp));
+                            case "System.DateTime": return _utils.Adapter.LambdaConvert_ToDateTime(operandExp.Type, getExp(operandExp));
+                            case "System.Decimal": return _utils.Adapter.LambdaConvert_ToDecimal(operandExp.Type, getExp(operandExp));
+                            case "System.Double": return _utils.Adapter.LambdaConvert_ToDouble(operandExp.Type, getExp(operandExp));
+                            case "System.Int16": return _utils.Adapter.LambdaConvert_ToInt16(operandExp.Type, getExp(operandExp));
+                            case "System.Int32": return _utils.Adapter.LambdaConvert_ToInt32(operandExp.Type, getExp(operandExp));
+                            case "System.Int64": return _utils.Adapter.LambdaConvert_ToInt64(operandExp.Type, getExp(operandExp));
+                            case "System.SByte": return _utils.Adapter.LambdaConvert_ToSByte(operandExp.Type, getExp(operandExp));
+                            case "System.Single": return _utils.Adapter.LambdaConvert_ToSingle(operandExp.Type, getExp(operandExp));
+                            case "System.String": return _utils.Adapter.LambdaConvert_ToString(operandExp.Type, getExp(operandExp));
+                            case "System.UInt16": return _utils.Adapter.LambdaConvert_ToUInt16(operandExp.Type, getExp(operandExp));
+                            case "System.UInt32": return _utils.Adapter.LambdaConvert_ToUInt32(operandExp.Type, getExp(operandExp));
+                            case "System.UInt64": return _utils.Adapter.LambdaConvert_ToUInt64(operandExp.Type, getExp(operandExp));
+                            case "System.Guid": return _utils.Adapter.LambdaConvert_ToGuid(operandExp.Type, getExp(operandExp));
+                        }
+                    }
+                    break;
+                case ExpressionType.Call:
+                    var callExp = exp as MethodCallExpression;
+
+                    switch (callExp.Method.Name)
+                    {
+                        case "Parse":
+                        case "TryParse":
+                            switch (callExp.Method.DeclaringType.NullableTypeOrThis().ToString())
+                            {
+                                case "System.Boolean": return _utils.Adapter.LambdaConvert_ToBoolean(callExp.Method.DeclaringType, getExp(callExp.Arguments[0]));
+                                case "System.Byte": return _utils.Adapter.LambdaConvert_ToByte(callExp.Method.DeclaringType, getExp(callExp.Arguments[0]));
+                                case "System.Char": return _utils.Adapter.LambdaConvert_ToChar(callExp.Method.DeclaringType, getExp(callExp.Arguments[0]));
+                                case "System.DateTime": return _utils.Adapter.LambdaConvert_ToDateTime(callExp.Method.DeclaringType, getExp(callExp.Arguments[0]));
+                                case "System.Decimal": return _utils.Adapter.LambdaConvert_ToDecimal(callExp.Method.DeclaringType, getExp(callExp.Arguments[0]));
+                                case "System.Double": return _utils.Adapter.LambdaConvert_ToDouble(callExp.Method.DeclaringType, getExp(callExp.Arguments[0]));
+                                case "System.Int16": return _utils.Adapter.LambdaConvert_ToInt16(callExp.Method.DeclaringType, getExp(callExp.Arguments[0]));
+                                case "System.Int32": return _utils.Adapter.LambdaConvert_ToInt32(callExp.Method.DeclaringType, getExp(callExp.Arguments[0]));
+                                case "System.Int64": return _utils.Adapter.LambdaConvert_ToInt64(callExp.Method.DeclaringType, getExp(callExp.Arguments[0]));
+                                case "System.SByte": return _utils.Adapter.LambdaConvert_ToSByte(callExp.Method.DeclaringType, getExp(callExp.Arguments[0]));
+                                case "System.Single": return _utils.Adapter.LambdaConvert_ToSingle(callExp.Method.DeclaringType, getExp(callExp.Arguments[0]));
+                                case "System.UInt16": return _utils.Adapter.LambdaConvert_ToUInt16(callExp.Method.DeclaringType, getExp(callExp.Arguments[0]));
+                                case "System.UInt32": return _utils.Adapter.LambdaConvert_ToUInt32(callExp.Method.DeclaringType, getExp(callExp.Arguments[0]));
+                                case "System.UInt64": return _utils.Adapter.LambdaConvert_ToUInt64(callExp.Method.DeclaringType, getExp(callExp.Arguments[0]));
+                                case "System.Guid": return _utils.Adapter.LambdaConvert_ToGuid(callExp.Method.DeclaringType, getExp(callExp.Arguments[0]));
+                            }
+                            break;
+                        case "NewGuid":
+                            switch (callExp.Method.DeclaringType.NullableTypeOrThis().ToString())
+                            {
+                                case "System.Guid": return _utils.Adapter.LambdaGuid_NewGuid;
+                            }
+                            break;
+                        case "Next":
+                            if (callExp.Object?.Type == typeof(Random)) return _utils.Adapter.LambdaRandom_Next;
+                            break;
+                        case "NextDouble":
+                            if (callExp.Object?.Type == typeof(Random)) return _utils.Adapter.LambdaRandom_NextDouble;
+                            break;
+                        case "Random":
+                            if (callExp.Method.DeclaringType.IsNumberType()) return _utils.Adapter.LambdaRandom_NextDouble;
+                            break;
+                        case "ToString":
+                            if (callExp.Object != null) return callExp.Arguments.Count == 0 ? _utils.Adapter.LambdaConvert_ToString(callExp.Object.Type, getExp(callExp.Object)) : null;
+                            break;
+                    }
+
+                    var objExp = callExp.Object;
+                    var objType = objExp?.Type;
+                    if (objType?.FullName == "System.Byte[]") return null;
+
+                    var argIndex = 0;
+                    if (objType == null && callExp.Method.DeclaringType == typeof(Enumerable))
+                    {
+                        objExp = callExp.Arguments.FirstOrDefault();
+                        objType = objExp?.Type;
+                        argIndex++;
+                    }
+                    if (objType == null) objType = callExp.Method.DeclaringType;
+                    if (objType != null || objType.IsArray || typeof(IList).IsAssignableFrom(callExp.Method.DeclaringType))
+                    {
+                        var left = objExp == null ? null : getExp(objExp);
+                        switch (callExp.Method.Name)
+                        {
+                            case "Contains":
+                                //判断 in
+                                return $"({getExp(callExp.Arguments[argIndex])}) in {left}";
+                        }
+                    }
+                    break;
+                case ExpressionType.NewArrayInit:
+                    var arrExp = exp as NewArrayExpression;
+                    var arrSb = new StringBuilder();
+                    arrSb.Append("(");
+                    for (var a = 0; a < arrExp.Expressions.Count; a++)
+                    {
+                        if (a > 0) arrSb.Append(",");
+                        arrSb.Append(getExp(arrExp.Expressions[a]));
+                    }
+                    if (arrSb.Length == 1) arrSb.Append("NULL");
+                    return arrSb.Append(")").ToString();
+                case ExpressionType.ListInit:
+                    var listExp = exp as ListInitExpression;
+                    var listSb = new StringBuilder();
+                    listSb.Append("(");
+                    for (var a = 0; a < listExp.Initializers.Count; a++)
+                    {
+                        if (listExp.Initializers[a].Arguments.Any() == false) continue;
+                        if (a > 0) listSb.Append(",");
+                        listSb.Append(getExp(listExp.Initializers[a].Arguments.FirstOrDefault()));
+                    }
+                    if (listSb.Length == 1) listSb.Append("NULL");
+                    return listSb.Append(")").ToString();
+                case ExpressionType.New:
+                    var newExp = exp as NewExpression;
+                    if (typeof(IList).IsAssignableFrom(newExp.Type))
+                    {
+                        if (newExp.Arguments.Count == 0) return "(NULL)";
+                        if (typeof(IEnumerable).IsAssignableFrom(newExp.Arguments[0].Type) == false) return "(NULL)";
+                        return getExp(newExp.Arguments[0]);
+                    }
+                    return null;
+            }
+            return null;
+        }
+
+        public override string ExpressionLambdaToSqlMemberAccessString(MemberExpression exp, ExpTSC tsc)
+        {
+            if (exp.Expression == null)
+            {
+                switch (exp.Member.Name)
+                {
+                    case "Empty": return "''";
+                }
+                return null;
+            }
+            var left = ExpressionLambdaToSql(exp.Expression, tsc);
+            switch (exp.Member.Name)
+            {
+                case "Length": return _utils.Adapter.LambdaString_Length(left);
+            }
+            return null;
+        }
+        public override string ExpressionLambdaToSqlMemberAccessDateTime(MemberExpression exp, ExpTSC tsc)
+        {
+            if (exp.Expression == null)
+            {
+                switch (exp.Member.Name)
+                {
+                    case "Now": return _utils.Adapter.LambdaDateTime_Now;
+                    case "UtcNow": return _utils.Adapter.LambdaDateTime_UtcNow;
+                    case "Today": return _utils.Adapter.LambdaDateTime_Today;
+                    case "MinValue": return _utils.Adapter.LambdaDateTime_MinValue;
+                    case "MaxValue": return _utils.Adapter.LambdaDateTime_MaxValue;
+                }
+                return null;
+            }
+            var left = ExpressionLambdaToSql(exp.Expression, tsc);
+            switch (exp.Member.Name)
+            {
+                case "Date": return _utils.Adapter.LambdaDateTime_Date(left);
+                case "TimeOfDay": return _utils.Adapter.LambdaDateTime_TimeOfDay(left);
+                case "DayOfWeek": return _utils.Adapter.LambdaDateTime_DayOfWeek(left);
+                case "Day": return _utils.Adapter.LambdaDateTime_Day(left);
+                case "DayOfYear": return _utils.Adapter.LambdaDateTime_DayOfYear(left);
+                case "Month": return _utils.Adapter.LambdaDateTime_Month(left);
+                case "Year": return _utils.Adapter.LambdaDateTime_Year(left);
+                case "Hour": return _utils.Adapter.LambdaDateTime_Hour(left);
+                case "Minute": return _utils.Adapter.LambdaDateTime_Minute(left);
+                case "Second": return _utils.Adapter.LambdaDateTime_Second(left);
+                case "Millisecond": return _utils.Adapter.LambdaDateTime_Millisecond(left);
+                case "Ticks": return _utils.Adapter.LambdaDateTime_Ticks(left);
+            }
+            return null;
+        }
+
+        public override string ExpressionLambdaToSqlMemberAccessTimeSpan(MemberExpression exp, ExpTSC tsc)
+        {
+            if (exp.Expression == null)
+            {
+                switch (exp.Member.Name)
+                {
+                    case "Zero": return "0";
+                    case "MinValue": return "-922337203685477580"; //微秒 Ticks / 10
+                    case "MaxValue": return "922337203685477580";
+                }
+                return null;
+            }
+            var left = ExpressionLambdaToSql(exp.Expression, tsc);
+            switch (exp.Member.Name)
+            {
+                case "Days": return _utils.Adapter.LambdaMath_Floor($"({left})/{60 * 60 * 24}");
+                case "Hours": return _utils.Adapter.LambdaMath_Floor($"({left})/{60 * 60}%24");
+                case "Milliseconds": return $"({_utils.Adapter.CastSql(left, _utils.Adapter.MappingOdbcTypeBigInt)}*1000)";
+                case "Minutes": return _utils.Adapter.LambdaMath_Floor($"({left})/60%60");
+                case "Seconds": return $"(({left})%60)";
+                case "Ticks": return $"({_utils.Adapter.CastSql(left, _utils.Adapter.MappingOdbcTypeBigInt)}*10000000)";
+                case "TotalDays": return $"(({left})/{60 * 60 * 24})";
+                case "TotalHours": return $"(({left})/{60 * 60})";
+                case "TotalMilliseconds": return $"({_utils.Adapter.CastSql(left, _utils.Adapter.MappingOdbcTypeBigInt)}*1000)";
+                case "TotalMinutes": return $"(({left})/60)";
+                case "TotalSeconds": return $"({left})";
+            }
+            return null;
+        }
+
+        public override string ExpressionLambdaToSqlCallString(MethodCallExpression exp, ExpTSC tsc)
+        {
+            Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
+            if (exp.Object == null)
+            {
+                switch (exp.Method.Name)
+                {
+                    case "IsNullOrEmpty": return _utils.Adapter.LambdaString_IsNullOrEmpty(getExp(exp.Arguments[0]));
+                    case "IsNullOrWhiteSpace": return _utils.Adapter.LambdaString_IsNullOrWhiteSpace(getExp(exp.Arguments[0]));
+                    case "Concat": return _common.StringConcat(exp.Arguments.Select(a => getExp(a)).ToArray(), exp.Arguments.Select(a => a.Type).ToArray());
+                }
+            }
+            else
+            {
+                var left = getExp(exp.Object);
+                switch (exp.Method.Name)
+                {
+                    case "StartsWith":
+                    case "EndsWith":
+                    case "Contains":
+                        var args0Value = getExp(exp.Arguments[0]);
+                        if (args0Value == "NULL") return $"({left}) IS NULL";
+                        if (exp.Method.Name == "StartsWith") return $"({left}) LIKE {(args0Value.EndsWith("'") ? args0Value.Insert(args0Value.Length - 1, "%") : $"({_common.StringConcat(new string[] { args0Value, "'%'" }, new[] { typeof(int), typeof(string) })})")}";
+                        if (exp.Method.Name == "EndsWith") return $"({left}) LIKE {(args0Value.StartsWith("'") ? args0Value.Insert(1, "%") : $"({_common.StringConcat(new string[] { "'%'", args0Value }, new[] { typeof(string), typeof(int) })})")}";
+                        if (args0Value.StartsWith("'") && args0Value.EndsWith("'")) return $"({left}) LIKE {args0Value.Insert(1, "%").Insert(args0Value.Length, "%")}";
+                        return $"({left}) LIKE ({_common.StringConcat(new string[] { "'%'", args0Value, "'%'" }, new[] { typeof(string), typeof(int), typeof(string)})})";
+                    case "ToLower": return _utils.Adapter.LambdaString_ToLower(left);
+                    case "ToUpper": return _utils.Adapter.LambdaString_ToUpper(left);
+                    case "Substring":
+                        var substrArgs1 = getExp(exp.Arguments[0]);
+                        if (long.TryParse(substrArgs1, out var testtrylng1)) substrArgs1 = (testtrylng1 + 1).ToString();
+                        else substrArgs1 += "+1";
+                        if (exp.Arguments.Count == 1) return _utils.Adapter.LambdaString_Substring(left, substrArgs1, null);
+                        return _utils.Adapter.LambdaString_Substring(left, substrArgs1, getExp(exp.Arguments[1]));
+                    case "IndexOf":
+                        var indexOfFindStr = getExp(exp.Arguments[0]);
+                        if (exp.Arguments.Count > 1 && exp.Arguments[1].Type.FullName == "System.Int32")
+                        {
+                            var locateArgs1 = getExp(exp.Arguments[1]);
+                            if (long.TryParse(locateArgs1, out var testtrylng2)) locateArgs1 = (testtrylng2 + 1).ToString();
+                            else locateArgs1 += "+1";
+                            return _utils.Adapter.LambdaString_IndexOf(left, indexOfFindStr, locateArgs1);
+                        }
+                        return _utils.Adapter.LambdaString_IndexOf(left, indexOfFindStr, null);
+                    case "PadLeft":
+                        if (exp.Arguments.Count == 1) return _utils.Adapter.LambdaString_PadLeft(left, getExp(exp.Arguments[0]), null);
+                        return _utils.Adapter.LambdaString_PadLeft(left, getExp(exp.Arguments[0]), getExp(exp.Arguments[1]));
+                    case "PadRight":
+                        if (exp.Arguments.Count == 1) return _utils.Adapter.LambdaString_PadRight(left, getExp(exp.Arguments[0]), null);
+                        return _utils.Adapter.LambdaString_PadRight(left, getExp(exp.Arguments[0]), getExp(exp.Arguments[1]));
+                    case "Trim": return _utils.Adapter.LambdaString_Trim(left);
+                    case "TrimStart": return _utils.Adapter.LambdaString_TrimStart(left);
+                    case "TrimEnd": return _utils.Adapter.LambdaString_TrimEnd(left);
+                    case "Replace": return _utils.Adapter.LambdaString_Replace(left, getExp(exp.Arguments[0]), getExp(exp.Arguments[1]));
+                    case "CompareTo": return _utils.Adapter.LambdaString_CompareTo(left, getExp(exp.Arguments[0]));
+                    case "Equals": return _utils.Adapter.LambdaString_Equals(left, getExp(exp.Arguments[0]));
+                }
+            }
+            return null;
+        }
+        public override string ExpressionLambdaToSqlCallMath(MethodCallExpression exp, ExpTSC tsc)
+        {
+            Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
+            switch (exp.Method.Name)
+            {
+                case "Abs": return _utils.Adapter.LambdaMath_Abs(getExp(exp.Arguments[0]));
+                case "Sign": return _utils.Adapter.LambdaMath_Sign(getExp(exp.Arguments[0]));
+                case "Floor": return _utils.Adapter.LambdaMath_Floor(getExp(exp.Arguments[0]));
+                case "Ceiling": return _utils.Adapter.LambdaMath_Ceiling(getExp(exp.Arguments[0]));
+                case "Round":
+                    if (exp.Arguments.Count > 1 && exp.Arguments[1].Type.FullName == "System.Int32") return _utils.Adapter.LambdaMath_Round(getExp(exp.Arguments[0]), getExp(exp.Arguments[1]));
+                    return _utils.Adapter.LambdaMath_Round(getExp(exp.Arguments[0]), "0");
+                case "Exp": return _utils.Adapter.LambdaMath_Exp(getExp(exp.Arguments[0]));
+                case "Log": return _utils.Adapter.LambdaMath_Log(getExp(exp.Arguments[0]));
+                case "Log10": return _utils.Adapter.LambdaMath_Log10(getExp(exp.Arguments[0]));
+                case "Pow": return _utils.Adapter.LambdaMath_Pow(getExp(exp.Arguments[0]), getExp(exp.Arguments[1]));
+                case "Sqrt": return _utils.Adapter.LambdaMath_Sqrt(getExp(exp.Arguments[0]));
+                case "Cos": return  _utils.Adapter.LambdaMath_Cos(getExp(exp.Arguments[0]));
+                case "Sin": return  _utils.Adapter.LambdaMath_Sin(getExp(exp.Arguments[0]));
+                case "Tan": return  _utils.Adapter.LambdaMath_Tan(getExp(exp.Arguments[0]));
+                case "Acos": return _utils.Adapter.LambdaMath_Acos(getExp(exp.Arguments[0]));
+                case "Asin": return _utils.Adapter.LambdaMath_Asin(getExp(exp.Arguments[0]));
+                case "Atan": return _utils.Adapter.LambdaMath_Atan(getExp(exp.Arguments[0]));
+                case "Atan2": return _utils.Adapter.LambdaMath_Atan2(getExp(exp.Arguments[0]), getExp(exp.Arguments[1]));
+                case "Truncate": return _utils.Adapter.LambdaMath_Truncate(getExp(exp.Arguments[0]));
+            }
+            return null;
+        }
+        public override string ExpressionLambdaToSqlCallDateTime(MethodCallExpression exp, ExpTSC tsc)
+        {
+            Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
+            if (exp.Object == null)
+            {
+                switch (exp.Method.Name)
+                {
+                    case "Compare": return _utils.Adapter.LambdaDateTime_CompareTo(getExp(exp.Arguments[0]), getExp(exp.Arguments[1]));
+                    case "DaysInMonth": return _utils.Adapter.LambdaDateTime_DaysInMonth(getExp(exp.Arguments[0]), getExp(exp.Arguments[1]));
+                    case "Equals": return _utils.Adapter.LambdaDateTime_Equals(getExp(exp.Arguments[0]), getExp(exp.Arguments[1]));
+
+                    case "IsLeapYear": return _utils.Adapter.LambdaDateTime_IsLeapYear(getExp(exp.Arguments[0]));
+
+                    case "Parse": return _utils.Adapter.LambdaConvert_ToDateTime(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                    case "ParseExact":
+                    case "TryParse":
+                    case "TryParseExact": return _utils.Adapter.LambdaConvert_ToDateTime(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                }
+            }
+            else
+            {
+                var left = getExp(exp.Object);
+                var args1 = exp.Arguments.Count == 0 ? null : getExp(exp.Arguments[0]);
+                switch (exp.Method.Name)
+                {
+                    case "Add": return _utils.Adapter.LambdaDateTime_Add(left, args1);
+                    case "AddDays": return _utils.Adapter.LambdaDateTime_AddDays(left, args1);
+                    case "AddHours": return _utils.Adapter.LambdaDateTime_AddHours(left, args1);
+                    case "AddMilliseconds": return _utils.Adapter.LambdaDateTime_AddMilliseconds(left, args1);
+                    case "AddMinutes": return _utils.Adapter.LambdaDateTime_AddMinutes(left, args1);
+                    case "AddMonths": return _utils.Adapter.LambdaDateTime_AddMonths(left, args1);
+                    case "AddSeconds": return _utils.Adapter.LambdaDateTime_AddSeconds(left, args1);
+                    case "AddTicks": return _utils.Adapter.LambdaDateTime_AddTicks(left, args1);
+                    case "AddYears": return _utils.Adapter.LambdaDateTime_AddYears(left, args1);
+                    case "Subtract":
+                        switch ((exp.Arguments[0].Type.IsNullableType() ? exp.Arguments[0].Type.GenericTypeArguments.FirstOrDefault() : exp.Arguments[0].Type).FullName)
+                        {
+                            case "System.DateTime": return _utils.Adapter.LambdaDateTime_Subtract(left, args1);
+                            case "System.TimeSpan": return _utils.Adapter.LambdaDateTime_SubtractTimeSpan(left, args1);
+                        }
+                        break;
+                    case "Equals": return _utils.Adapter.LambdaDateTime_Equals(left, args1);
+                    case "CompareTo": return _utils.Adapter.LambdaDateTime_CompareTo(left, args1);
+                    case "ToString": return exp.Arguments.Count == 0 ? _utils.Adapter.LambdaDateTime_ToString(left) : null;
+                }
+            }
+            return null;
+        }
+
+        public virtual string LambdaDateSpan_Add(string operand, string value) => $"({operand}+{value})";
+        public virtual string LambdaDateSpan_Subtract(string operand, string value) => $"({operand}-({value}))";
+        public virtual string LambdaDateSpan_Equals(string oldvalue, string newvalue) => $"({oldvalue} = {newvalue})";
+        public virtual string LambdaDateSpan_CompareTo(string oldvalue, string newvalue) => $"({oldvalue}-({newvalue}))";
+
+        public override string ExpressionLambdaToSqlCallTimeSpan(MethodCallExpression exp, ExpTSC tsc)
+        {
+            Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
+            if (exp.Object == null)
+            {
+                switch (exp.Method.Name)
+                {
+                    case "Compare": return $"({getExp(exp.Arguments[0])}-({getExp(exp.Arguments[1])}))";
+                    case "Equals": return $"({getExp(exp.Arguments[0])} = {getExp(exp.Arguments[1])})";
+                    case "FromDays": return $"(({getExp(exp.Arguments[0])})*{60 * 60 * 24})";
+                    case "FromHours": return $"(({getExp(exp.Arguments[0])})*{60 * 60})";
+                    case "FromMilliseconds": return $"(({getExp(exp.Arguments[0])})/1000)";
+                    case "FromMinutes": return $"(({getExp(exp.Arguments[0])})*60)";
+                    case "FromSeconds": return $"({getExp(exp.Arguments[0])})";
+                    case "FromTicks": return $"(({getExp(exp.Arguments[0])})/10000000)";
+                    case "Parse": return _utils.Adapter.LambdaConvert_ToInt64(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                    case "ParseExact":
+                    case "TryParse":
+                    case "TryParseExact": return _utils.Adapter.LambdaConvert_ToInt64(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                }
+            }
+            else
+            {
+                var left = getExp(exp.Object);
+                var args1 = exp.Arguments.Count == 0 ? null : getExp(exp.Arguments[0]);
+                switch (exp.Method.Name)
+                {
+                    case "Add": return $"({left}+{args1})";
+                    case "Subtract": return $"({left}-({args1}))";
+                    case "Equals": return $"({left} = {args1})";
+                    case "CompareTo": return $"({left}-({args1}))";
+                    case "ToString": return _utils.Adapter.LambdaConvert_ToString(exp.Type, left);
+                }
+            }
+            return null;
+        }
+        public override string ExpressionLambdaToSqlCallConvert(MethodCallExpression exp, ExpTSC tsc)
+        {
+            Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
+            if (exp.Object == null)
+            {
+                switch (exp.Method.Name)
+                {
+                    case "ToBoolean": return _utils.Adapter.LambdaConvert_ToBoolean(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                    case "ToByte": return _utils.Adapter.LambdaConvert_ToByte(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                    case "ToChar": return _utils.Adapter.LambdaConvert_ToChar(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                    case "ToDateTime": return _utils.Adapter.LambdaConvert_ToDateTime(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                    case "ToDecimal": return _utils.Adapter.LambdaConvert_ToDecimal(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                    case "ToDouble": return _utils.Adapter.LambdaConvert_ToDouble(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                    case "ToInt16": return _utils.Adapter.LambdaConvert_ToInt16(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                    case "ToInt32": return _utils.Adapter.LambdaConvert_ToInt32(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                    case "ToInt64": return _utils.Adapter.LambdaConvert_ToInt64(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                    case "ToSByte": return _utils.Adapter.LambdaConvert_ToSByte(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                    case "ToSingle": return _utils.Adapter.LambdaConvert_ToSingle(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                    case "ToString": return _utils.Adapter.LambdaConvert_ToString(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                    case "ToUInt16": return _utils.Adapter.LambdaConvert_ToUInt16(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                    case "ToUInt32": return _utils.Adapter.LambdaConvert_ToUInt32(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                    case "ToUInt64": return _utils.Adapter.LambdaConvert_ToUInt64(exp.Arguments[0].Type, getExp(exp.Arguments[0]));
+                }
+            }
+            return null;
+        }
+    }
+}

Providers/FreeSql.Provider.Odbc/Default/OdbcProvider.cs

@@ -0,0 +1,113 @@
+using FreeSql.Internal;
+using FreeSql.Internal.CommonProvider;
+using System;
+using System.Collections.Generic;
+using System.Collections.Concurrent;
+using System.Linq;
+using FreeSql.Odbc.Default;
+
+namespace FreeSql.Odbc.Default
+{
+
+    public class OdbcProvider<TMark> : IFreeSql<TMark>
+    {
+
+        public ISelect<T1> Select<T1>() where T1 : class => new OdbcSelect<T1>(this, this.InternalCommonUtils, this.InternalCommonExpression, null);
+        public ISelect<T1> Select<T1>(object dywhere) where T1 : class => new OdbcSelect<T1>(this, this.InternalCommonUtils, this.InternalCommonExpression, dywhere);
+        public IInsert<T1> Insert<T1>() where T1 : class => new OdbcInsert<T1>(this, this.InternalCommonUtils, this.InternalCommonExpression);
+        public IInsert<T1> Insert<T1>(T1 source) where T1 : class => this.Insert<T1>().AppendData(source);
+        public IInsert<T1> Insert<T1>(T1[] source) where T1 : class => this.Insert<T1>().AppendData(source);
+        public IInsert<T1> Insert<T1>(IEnumerable<T1> source) where T1 : class => this.Insert<T1>().AppendData(source);
+        public IUpdate<T1> Update<T1>() where T1 : class => new OdbcUpdate<T1>(this, this.InternalCommonUtils, this.InternalCommonExpression, null);
+        public IUpdate<T1> Update<T1>(object dywhere) where T1 : class => new OdbcUpdate<T1>(this, this.InternalCommonUtils, this.InternalCommonExpression, dywhere);
+        public IDelete<T1> Delete<T1>() where T1 : class => new OdbcDelete<T1>(this, this.InternalCommonUtils, this.InternalCommonExpression, null);
+        public IDelete<T1> Delete<T1>(object dywhere) where T1 : class => new OdbcDelete<T1>(this, this.InternalCommonUtils, this.InternalCommonExpression, dywhere);
+
+        public IAdo Ado { get; }
+        public IAop Aop { get; }
+        public ICodeFirst CodeFirst { get; }
+        public IDbFirst DbFirst => throw new NotImplementedException("FreeSql.Odbc.Default 未实现该功能");
+
+        /// <summary>
+        /// 生成一个普通访问功能的 IFreeSql 对象，用来访问 odbc 
+        /// </summary>
+        /// <param name="masterConnectionString"></param>
+        /// <param name="slaveConnectionString"></param>
+        /// <param name="adapter">适配器</param>
+        public OdbcProvider(string masterConnectionString, string[] slaveConnectionString)
+        {
+            this.InternalCommonUtils = new OdbcUtils(this);
+            this.InternalCommonExpression = new OdbcExpression(this.InternalCommonUtils);
+
+            this.Ado = new OdbcAdo(this.InternalCommonUtils, masterConnectionString, slaveConnectionString);
+            this.Aop = new AopProvider();
+
+            this.CodeFirst = new OdbcCodeFirst(this, this.InternalCommonUtils, this.InternalCommonExpression);
+
+            var _utils = InternalCommonUtils as OdbcUtils;
+            //处理 MaxLength
+            this.Aop.ConfigEntityProperty += new EventHandler<Aop.ConfigEntityPropertyEventArgs>((s, e) =>
+            {
+                object[] attrs = null;
+                try
+                {
+                    attrs = e.Property.GetCustomAttributes(false).ToArray(); //.net core 反射存在版本冲突问题，导致该方法异常
+                }
+                catch { }
+
+                var maxlenAttr = attrs.Where(a => {
+                    return ((a as Attribute)?.TypeId as Type)?.Name == "MaxLengthAttribute";
+                }).FirstOrDefault();
+                if (maxlenAttr != null)
+                {
+                    var lenProp = maxlenAttr.GetType().GetProperties().Where(a => a.PropertyType.IsNumberType()).FirstOrDefault();
+                    if (lenProp != null && int.TryParse(string.Concat(lenProp.GetValue(maxlenAttr, null)), out var tryval))
+                    {
+                        if (tryval != 0)
+                        {
+                            switch (this.Ado.DataType)
+                            {
+                                case DataType.Sqlite:
+                                    e.ModifyResult.DbType = tryval > 0 ? $"{_utils.Adapter.MappingOdbcTypeVarChar}({tryval})" : _utils.Adapter.MappingOdbcTypeText;
+                                    break;
+                            }
+                        }
+                    }
+                }
+            });
+        }
+
+        internal CommonUtils InternalCommonUtils { get; }
+        internal CommonExpression InternalCommonExpression { get; }
+
+        public void Transaction(Action handler) => Ado.Transaction(handler);
+
+        public void Transaction(Action handler, TimeSpan timeout) => Ado.Transaction(handler, timeout);
+
+        ~OdbcProvider()
+        {
+            this.Dispose();
+        }
+        bool _isdisposed = false;
+        public void Dispose()
+        {
+            if (_isdisposed) return;
+            try
+            {
+                (this.Ado as AdoProvider)?.Dispose();
+            }
+            finally
+            {
+                FreeSqlOdbcGlobalExtensions._dicOdbcAdater.TryRemove(this as IFreeSql, out var tryada);
+            }
+        }
+    }
+}
+
+partial class FreeSqlOdbcGlobalExtensions
+{
+    internal static OdbcAdapter DefaultOdbcAdapter = new OdbcAdapter();
+    internal static ConcurrentDictionary<IFreeSql, OdbcAdapter> _dicOdbcAdater = new ConcurrentDictionary<IFreeSql, OdbcAdapter>();
+    public static void SetOdbcAdapter(this IFreeSql that, OdbcAdapter adapter) => _dicOdbcAdater.AddOrUpdate(that, adapter, (fsql, old) => adapter);
+    internal static OdbcAdapter GetOdbcAdapter(this IFreeSql that) => _dicOdbcAdater.TryGetValue(that, out var tryada) ? tryada : DefaultOdbcAdapter;
+}

Providers/FreeSql.Provider.Odbc/Default/OdbcUtils.cs

@@ -0,0 +1,73 @@
+using FreeSql.Internal;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Data.Common;
+using System.Data.Odbc;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+
+namespace FreeSql.Odbc.Default
+{
+
+    public class OdbcUtils : CommonUtils
+    {
+        public OdbcUtils(IFreeSql orm) : base(orm) { }
+        public OdbcAdapter Adapter => _orm.GetOdbcAdapter();
+
+        public override DbParameter AppendParamter(List<DbParameter> _params, string parameterName, Type type, object value)
+        {
+            if (string.IsNullOrEmpty(parameterName)) parameterName = $"p_{_params?.Count}";
+            if (value?.Equals(DateTime.MinValue) == true) value = new DateTime(1970, 1, 1);
+            var ret = new OdbcParameter { ParameterName = QuoteParamterName(parameterName), Value = value };
+            var tp = _orm.CodeFirst.GetDbInfo(type)?.type;
+            if (tp != null) ret.OdbcType = (OdbcType)tp.Value;
+            _params?.Add(ret);
+            return ret;
+        }
+
+        public override DbParameter[] GetDbParamtersByObject(string sql, object obj) =>
+            Utils.GetDbParamtersByObject<OdbcParameter>(sql, obj, null, (name, type, value) =>
+            {
+                if (value?.Equals(DateTime.MinValue) == true) value = new DateTime(1970, 1, 1);
+                var ret = new OdbcParameter { ParameterName = $"@{name}", Value = value };
+                var tp = _orm.CodeFirst.GetDbInfo(type)?.type;
+                if (tp != null) ret.OdbcType = (OdbcType)tp.Value;
+                return ret;
+            });
+
+        public override string FormatSql(string sql, params object[] args) => sql?.FormatOdbc(args);
+        public override string QuoteSqlName(string name)
+        {
+            var nametrim = name.Trim();
+            if (nametrim.StartsWith("(") && nametrim.EndsWith(")"))
+                return nametrim; //原生SQL
+            //return $"[{nametrim.TrimStart('[').TrimEnd(']').Replace(".", "].[")}]";
+            return $"{Adapter.QuoteSqlNameLeft}{nametrim.TrimStart(Adapter.QuoteSqlNameLeft).TrimEnd(Adapter.QuoteSqlNameRight).Replace(".", $"{Adapter.QuoteSqlNameRight}.{Adapter.QuoteSqlNameLeft}")}{Adapter.QuoteSqlNameRight}";
+        }
+        public override string TrimQuoteSqlName(string name)
+        {
+            var nametrim = name.Trim();
+            if (nametrim.StartsWith("(") && nametrim.EndsWith(")"))
+                return nametrim; //原生SQL
+            //return $"{nametrim.TrimStart('[').TrimEnd(']').Replace("].[", ".").Replace(".[", ".")}";
+            return $"{nametrim.TrimStart(Adapter.QuoteSqlNameLeft).TrimEnd(Adapter.QuoteSqlNameRight).Replace($"{Adapter.QuoteSqlNameRight}.{Adapter.QuoteSqlNameLeft}", ".").Replace($".{Adapter.QuoteSqlNameLeft}", ".")}";
+        }
+        public override string QuoteParamterName(string name) => $"@{(_orm.CodeFirst.IsSyncStructureToLower ? name.ToLower() : name)}";
+        public override string IsNull(string sql, object value) => Adapter.IsNullSql(sql, value);
+        public override string StringConcat(string[] objs, Type[] types) => Adapter.ConcatSql(objs, types);
+        public override string Mod(string left, string right, Type leftType, Type rightType) => Adapter.Mod(left, right, leftType, rightType);
+        public override string Div(string left, string right, Type leftType, Type rightType) => Adapter.Div(left, right, leftType, rightType);
+
+        public override string QuoteWriteParamter(Type type, string paramterName) => paramterName;
+        public override string QuoteReadColumn(Type type, string columnName) => Adapter.FieldSql(type, columnName);
+
+        public override string GetNoneParamaterSqlValue(List<DbParameter> specialParams, Type type, object value)
+        {
+            if (value == null) return "NULL";
+            if (type == typeof(byte[])) return Adapter.ByteRawSql(value);
+            return FormatSql("{0}", value, 1);
+        }
+    }
+}

Providers/FreeSql.Provider.Odbc/FreeSql.Provider.Odbc.csproj

@@ -2,10 +2,10 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
-		<Version>0.9.17</Version>
+		<Version>0.9.18</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
-		<Description>FreeSql 数据库 Odbc 实现，基于 {Oracle}、{SQL Server}、{MySQL ODBC 8.0 Unicode Driver}</Description>
+		<Description>FreeSql 数据库 Odbc 实现，基于 {Oracle}、{SQL Server}、{MySQL ODBC 8.0 Unicode Driver}、{PostgreSQL Unicode(x64)} 专用访问实现，以及通用 Odbc 访问所有数据库</Description>
 		<PackageProjectUrl>https://github.com/2881099/FreeSql</PackageProjectUrl>
 		<RepositoryUrl>https://github.com/2881099/FreeSql</RepositoryUrl>
 		<RepositoryType>git</RepositoryType>

Providers/FreeSql.Provider.Odbc/FreeSqlOdbcGlobalExtensions.cs

@@ -16,8 +16,8 @@
     /// <param name="that"></param>
     /// <param name="args"></param>
     /// <returns></returns>
-    public static string FormatOdbcSqlServer(this string that, params object[] args) => _sqlserverAdo.Addslashes(that, args);
-    static FreeSql.Odbc.SqlServer.OdbcSqlServerAdo _sqlserverAdo = new FreeSql.Odbc.SqlServer.OdbcSqlServerAdo();
+    public static string FormatOdbcSqlServer(this string that, params object[] args) => _odbcSqlServerAdo.Addslashes(that, args);
+    static FreeSql.Odbc.SqlServer.OdbcSqlServerAdo _odbcSqlServerAdo = new FreeSql.Odbc.SqlServer.OdbcSqlServerAdo();
 
     /// <summary>
     /// 特殊处理类似 string.Format 的使用方法，防止注入，以及 IS NULL 转换
@@ -25,6 +25,24 @@
     /// <param name="that"></param>
     /// <param name="args"></param>
     /// <returns></returns>
-    public static string FormatOdbcMySql(this string that, params object[] args) => _mysqlAdo.Addslashes(that, args);
-    static FreeSql.Odbc.MySql.OdbcMySqlAdo _mysqlAdo = new FreeSql.Odbc.MySql.OdbcMySqlAdo();
+    public static string FormatOdbcMySql(this string that, params object[] args) => _odbcMySqlAdo.Addslashes(that, args);
+    static FreeSql.Odbc.MySql.OdbcMySqlAdo _odbcMySqlAdo = new FreeSql.Odbc.MySql.OdbcMySqlAdo();
+
+    /// <summary>
+    /// 特殊处理类似 string.Format 的使用方法，防止注入，以及 IS NULL 转换
+    /// </summary>
+    /// <param name="that"></param>
+    /// <param name="args"></param>
+    /// <returns></returns>
+    public static string FormatOdbcPostgreSQL(this string that, params object[] args) => _odbcPostgreSQLAdo.Addslashes(that, args);
+    static FreeSql.Odbc.PostgreSQL.OdbcPostgreSQLAdo _odbcPostgreSQLAdo = new FreeSql.Odbc.PostgreSQL.OdbcPostgreSQLAdo();
+
+    /// <summary>
+    /// 特殊处理类似 string.Format 的使用方法，防止注入，以及 IS NULL 转换
+    /// </summary>
+    /// <param name="that"></param>
+    /// <param name="args"></param>
+    /// <returns></returns>
+    public static string FormatOdbc(this string that, params object[] args) => _odbcAdo.Addslashes(that, args);
+    static FreeSql.Odbc.Default.OdbcAdo _odbcAdo = new FreeSql.Odbc.Default.OdbcAdo();
 }

Providers/FreeSql.Provider.Odbc/MySql/Curd/OdbcMySqlSelect.cs

@@ -114,60 +114,60 @@ namespace FreeSql.Odbc.MySql
         }
 
         public OdbcMySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
-        public override ISelect<T1, T2> From<T2>(Expression<Func<ISelectFromExpression<T1>, T2, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new MySqlSelect<T1, T2>(_orm, _commonUtils, _commonExpression, null); OdbcMySqlSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
-        public override ISelect<T1, T2, T3> From<T2, T3>(Expression<Func<ISelectFromExpression<T1>, T2, T3, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new MySqlSelect<T1, T2, T3>(_orm, _commonUtils, _commonExpression, null); OdbcMySqlSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
-        public override ISelect<T1, T2, T3, T4> From<T2, T3, T4>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new MySqlSelect<T1, T2, T3, T4>(_orm, _commonUtils, _commonExpression, null); OdbcMySqlSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
-        public override ISelect<T1, T2, T3, T4, T5> From<T2, T3, T4, T5>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new MySqlSelect<T1, T2, T3, T4, T5>(_orm, _commonUtils, _commonExpression, null); OdbcMySqlSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
-        public override ISelect<T1, T2, T3, T4, T5, T6> From<T2, T3, T4, T5, T6>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new MySqlSelect<T1, T2, T3, T4, T5, T6>(_orm, _commonUtils, _commonExpression, null); OdbcMySqlSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
-        public override ISelect<T1, T2, T3, T4, T5, T6, T7> From<T2, T3, T4, T5, T6, T7>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new MySqlSelect<T1, T2, T3, T4, T5, T6, T7>(_orm, _commonUtils, _commonExpression, null); OdbcMySqlSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
-        public override ISelect<T1, T2, T3, T4, T5, T6, T7, T8> From<T2, T3, T4, T5, T6, T7, T8>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, T8, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new MySqlSelect<T1, T2, T3, T4, T5, T6, T7, T8>(_orm, _commonUtils, _commonExpression, null); OdbcMySqlSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
-        public override ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9> From<T2, T3, T4, T5, T6, T7, T8, T9>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, T8, T9, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new MySqlSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9>(_orm, _commonUtils, _commonExpression, null); OdbcMySqlSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
-        public override ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> From<T2, T3, T4, T5, T6, T7, T8, T9, T10>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, T8, T9, T10, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new MySqlSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>(_orm, _commonUtils, _commonExpression, null); OdbcMySqlSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2> From<T2>(Expression<Func<ISelectFromExpression<T1>, T2, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcMySqlSelect<T1, T2>(_orm, _commonUtils, _commonExpression, null); OdbcMySqlSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3> From<T2, T3>(Expression<Func<ISelectFromExpression<T1>, T2, T3, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcMySqlSelect<T1, T2, T3>(_orm, _commonUtils, _commonExpression, null); OdbcMySqlSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4> From<T2, T3, T4>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcMySqlSelect<T1, T2, T3, T4>(_orm, _commonUtils, _commonExpression, null); OdbcMySqlSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5> From<T2, T3, T4, T5>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcMySqlSelect<T1, T2, T3, T4, T5>(_orm, _commonUtils, _commonExpression, null); OdbcMySqlSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6> From<T2, T3, T4, T5, T6>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcMySqlSelect<T1, T2, T3, T4, T5, T6>(_orm, _commonUtils, _commonExpression, null); OdbcMySqlSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6, T7> From<T2, T3, T4, T5, T6, T7>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcMySqlSelect<T1, T2, T3, T4, T5, T6, T7>(_orm, _commonUtils, _commonExpression, null); OdbcMySqlSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6, T7, T8> From<T2, T3, T4, T5, T6, T7, T8>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, T8, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcMySqlSelect<T1, T2, T3, T4, T5, T6, T7, T8>(_orm, _commonUtils, _commonExpression, null); OdbcMySqlSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9> From<T2, T3, T4, T5, T6, T7, T8, T9>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, T8, T9, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcMySqlSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9>(_orm, _commonUtils, _commonExpression, null); OdbcMySqlSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> From<T2, T3, T4, T5, T6, T7, T8, T9, T10>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, T8, T9, T10, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcMySqlSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>(_orm, _commonUtils, _commonExpression, null); OdbcMySqlSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
         public override string ToSql(string field = null) => ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
-    class MySqlSelect<T1, T2> : FreeSql.Internal.CommonProvider.Select2Provider<T1, T2> where T1 : class where T2 : class
+    class OdbcMySqlSelect<T1, T2> : FreeSql.Internal.CommonProvider.Select2Provider<T1, T2> where T1 : class where T2 : class
     {
-        public MySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public OdbcMySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
         public override string ToSql(string field = null) => OdbcMySqlSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
-    class MySqlSelect<T1, T2, T3> : FreeSql.Internal.CommonProvider.Select3Provider<T1, T2, T3> where T1 : class where T2 : class where T3 : class
+    class OdbcMySqlSelect<T1, T2, T3> : FreeSql.Internal.CommonProvider.Select3Provider<T1, T2, T3> where T1 : class where T2 : class where T3 : class
     {
-        public MySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public OdbcMySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
         public override string ToSql(string field = null) => OdbcMySqlSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
-    class MySqlSelect<T1, T2, T3, T4> : FreeSql.Internal.CommonProvider.Select4Provider<T1, T2, T3, T4> where T1 : class where T2 : class where T3 : class where T4 : class
+    class OdbcMySqlSelect<T1, T2, T3, T4> : FreeSql.Internal.CommonProvider.Select4Provider<T1, T2, T3, T4> where T1 : class where T2 : class where T3 : class where T4 : class
     {
-        public MySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public OdbcMySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
         public override string ToSql(string field = null) => OdbcMySqlSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
-    class MySqlSelect<T1, T2, T3, T4, T5> : FreeSql.Internal.CommonProvider.Select5Provider<T1, T2, T3, T4, T5> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class
+    class OdbcMySqlSelect<T1, T2, T3, T4, T5> : FreeSql.Internal.CommonProvider.Select5Provider<T1, T2, T3, T4, T5> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class
     {
-        public MySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public OdbcMySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
         public override string ToSql(string field = null) => OdbcMySqlSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
-    class MySqlSelect<T1, T2, T3, T4, T5, T6> : FreeSql.Internal.CommonProvider.Select6Provider<T1, T2, T3, T4, T5, T6> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class
+    class OdbcMySqlSelect<T1, T2, T3, T4, T5, T6> : FreeSql.Internal.CommonProvider.Select6Provider<T1, T2, T3, T4, T5, T6> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class
     {
-        public MySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public OdbcMySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
         public override string ToSql(string field = null) => OdbcMySqlSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
-    class MySqlSelect<T1, T2, T3, T4, T5, T6, T7> : FreeSql.Internal.CommonProvider.Select7Provider<T1, T2, T3, T4, T5, T6, T7> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class
+    class OdbcMySqlSelect<T1, T2, T3, T4, T5, T6, T7> : FreeSql.Internal.CommonProvider.Select7Provider<T1, T2, T3, T4, T5, T6, T7> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class
     {
-        public MySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public OdbcMySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
         public override string ToSql(string field = null) => OdbcMySqlSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
-    class MySqlSelect<T1, T2, T3, T4, T5, T6, T7, T8> : FreeSql.Internal.CommonProvider.Select8Provider<T1, T2, T3, T4, T5, T6, T7, T8> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class where T8 : class
+    class OdbcMySqlSelect<T1, T2, T3, T4, T5, T6, T7, T8> : FreeSql.Internal.CommonProvider.Select8Provider<T1, T2, T3, T4, T5, T6, T7, T8> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class where T8 : class
     {
-        public MySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public OdbcMySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
         public override string ToSql(string field = null) => OdbcMySqlSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
-    class MySqlSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9> : FreeSql.Internal.CommonProvider.Select9Provider<T1, T2, T3, T4, T5, T6, T7, T8, T9> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class where T8 : class where T9 : class
+    class OdbcMySqlSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9> : FreeSql.Internal.CommonProvider.Select9Provider<T1, T2, T3, T4, T5, T6, T7, T8, T9> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class where T8 : class where T9 : class
     {
-        public MySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public OdbcMySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
         public override string ToSql(string field = null) => OdbcMySqlSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
-    class MySqlSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> : FreeSql.Internal.CommonProvider.Select10Provider<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class where T8 : class where T9 : class where T10 : class
+    class OdbcMySqlSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> : FreeSql.Internal.CommonProvider.Select10Provider<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class where T8 : class where T9 : class where T10 : class
     {
-        public MySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public OdbcMySqlSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
         public override string ToSql(string field = null) => OdbcMySqlSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
 }

Providers/FreeSql.Provider.Odbc/MySql/OdbcMySqlCodeFirst.cs

@@ -1,15 +1,10 @@
-using FreeSql.DataAnnotations;
-using FreeSql.DatabaseModel;
-using FreeSql.Internal;
-using FreeSql.Internal.Model;
+using FreeSql.Internal;
 using System;
-using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Data;
 using System.Data.Odbc;
 using System.Linq;
 using System.Text;
-using System.Text.RegularExpressions;
 
 namespace FreeSql.Odbc.MySql
 {

Providers/FreeSql.Provider.Odbc/MySql/OdbcMySqlExpression.cs

@@ -383,7 +383,7 @@ namespace FreeSql.Odbc.MySql
                             case "System.TimeSpan": return $"date_sub({left}, interval ({args1}) microsecond)";
                         }
                         break;
-                    case "Equals": return $"({left} = {getExp(exp.Arguments[0])})";
+                    case "Equals": return $"({left} = {args1})";
                     case "CompareTo": return $"timestampdiff(microsecond,{args1},{left})";
                     case "ToString": return exp.Arguments.Count == 0 ? $"date_format({left}, '%Y-%m-%d %H:%i:%s.%f')" : null;
                 }
@@ -419,8 +419,8 @@ namespace FreeSql.Odbc.MySql
                 {
                     case "Add": return $"({left}+{args1})";
                     case "Subtract": return $"({left}-({args1}))";
-                    case "Equals": return $"({left} = {getExp(exp.Arguments[0])})";
-                    case "CompareTo": return $"({left}-({getExp(exp.Arguments[0])}))";
+                    case "Equals": return $"({left} = {args1})";
+                    case "CompareTo": return $"({left}-({args1}))";
                     case "ToString": return $"cast({left} as char)";
                 }
             }

Providers/FreeSql.Provider.Odbc/Oracle/Curd/OdbcOracleSelect.cs

@@ -126,60 +126,60 @@ namespace FreeSql.Odbc.Oracle
         }
 
         public OdbcOracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
-        public override ISelect<T1, T2> From<T2>(Expression<Func<ISelectFromExpression<T1>, T2, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OracleSelect<T1, T2>(_orm, _commonUtils, _commonExpression, null); OdbcOracleSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
-        public override ISelect<T1, T2, T3> From<T2, T3>(Expression<Func<ISelectFromExpression<T1>, T2, T3, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OracleSelect<T1, T2, T3>(_orm, _commonUtils, _commonExpression, null); OdbcOracleSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
-        public override ISelect<T1, T2, T3, T4> From<T2, T3, T4>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OracleSelect<T1, T2, T3, T4>(_orm, _commonUtils, _commonExpression, null); OdbcOracleSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
-        public override ISelect<T1, T2, T3, T4, T5> From<T2, T3, T4, T5>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OracleSelect<T1, T2, T3, T4, T5>(_orm, _commonUtils, _commonExpression, null); OdbcOracleSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
-        public override ISelect<T1, T2, T3, T4, T5, T6> From<T2, T3, T4, T5, T6>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OracleSelect<T1, T2, T3, T4, T5, T6>(_orm, _commonUtils, _commonExpression, null); OdbcOracleSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
-        public override ISelect<T1, T2, T3, T4, T5, T6, T7> From<T2, T3, T4, T5, T6, T7>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OracleSelect<T1, T2, T3, T4, T5, T6, T7>(_orm, _commonUtils, _commonExpression, null); OdbcOracleSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
-        public override ISelect<T1, T2, T3, T4, T5, T6, T7, T8> From<T2, T3, T4, T5, T6, T7, T8>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, T8, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OracleSelect<T1, T2, T3, T4, T5, T6, T7, T8>(_orm, _commonUtils, _commonExpression, null); OdbcOracleSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
-        public override ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9> From<T2, T3, T4, T5, T6, T7, T8, T9>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, T8, T9, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OracleSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9>(_orm, _commonUtils, _commonExpression, null); OdbcOracleSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
-        public override ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> From<T2, T3, T4, T5, T6, T7, T8, T9, T10>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, T8, T9, T10, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OracleSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>(_orm, _commonUtils, _commonExpression, null); OdbcOracleSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2> From<T2>(Expression<Func<ISelectFromExpression<T1>, T2, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcOracleSelect<T1, T2>(_orm, _commonUtils, _commonExpression, null); OdbcOracleSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3> From<T2, T3>(Expression<Func<ISelectFromExpression<T1>, T2, T3, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcOracleSelect<T1, T2, T3>(_orm, _commonUtils, _commonExpression, null); OdbcOracleSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4> From<T2, T3, T4>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcOracleSelect<T1, T2, T3, T4>(_orm, _commonUtils, _commonExpression, null); OdbcOracleSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5> From<T2, T3, T4, T5>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcOracleSelect<T1, T2, T3, T4, T5>(_orm, _commonUtils, _commonExpression, null); OdbcOracleSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6> From<T2, T3, T4, T5, T6>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcOracleSelect<T1, T2, T3, T4, T5, T6>(_orm, _commonUtils, _commonExpression, null); OdbcOracleSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6, T7> From<T2, T3, T4, T5, T6, T7>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcOracleSelect<T1, T2, T3, T4, T5, T6, T7>(_orm, _commonUtils, _commonExpression, null); OdbcOracleSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6, T7, T8> From<T2, T3, T4, T5, T6, T7, T8>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, T8, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcOracleSelect<T1, T2, T3, T4, T5, T6, T7, T8>(_orm, _commonUtils, _commonExpression, null); OdbcOracleSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9> From<T2, T3, T4, T5, T6, T7, T8, T9>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, T8, T9, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcOracleSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9>(_orm, _commonUtils, _commonExpression, null); OdbcOracleSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> From<T2, T3, T4, T5, T6, T7, T8, T9, T10>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, T8, T9, T10, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcOracleSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>(_orm, _commonUtils, _commonExpression, null); OdbcOracleSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
         public override string ToSql(string field = null) => ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
-    class OracleSelect<T1, T2> : FreeSql.Internal.CommonProvider.Select2Provider<T1, T2> where T1 : class where T2 : class
+    class OdbcOracleSelect<T1, T2> : FreeSql.Internal.CommonProvider.Select2Provider<T1, T2> where T1 : class where T2 : class
     {
-        public OracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public OdbcOracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
         public override string ToSql(string field = null) => OdbcOracleSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
-    class OracleSelect<T1, T2, T3> : FreeSql.Internal.CommonProvider.Select3Provider<T1, T2, T3> where T1 : class where T2 : class where T3 : class
+    class OdbcOracleSelect<T1, T2, T3> : FreeSql.Internal.CommonProvider.Select3Provider<T1, T2, T3> where T1 : class where T2 : class where T3 : class
     {
-        public OracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public OdbcOracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
         public override string ToSql(string field = null) => OdbcOracleSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
-    class OracleSelect<T1, T2, T3, T4> : FreeSql.Internal.CommonProvider.Select4Provider<T1, T2, T3, T4> where T1 : class where T2 : class where T3 : class where T4 : class
+    class OdbcOracleSelect<T1, T2, T3, T4> : FreeSql.Internal.CommonProvider.Select4Provider<T1, T2, T3, T4> where T1 : class where T2 : class where T3 : class where T4 : class
     {
-        public OracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public OdbcOracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
         public override string ToSql(string field = null) => OdbcOracleSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
-    class OracleSelect<T1, T2, T3, T4, T5> : FreeSql.Internal.CommonProvider.Select5Provider<T1, T2, T3, T4, T5> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class
+    class OdbcOracleSelect<T1, T2, T3, T4, T5> : FreeSql.Internal.CommonProvider.Select5Provider<T1, T2, T3, T4, T5> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class
     {
-        public OracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public OdbcOracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
         public override string ToSql(string field = null) => OdbcOracleSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
-    class OracleSelect<T1, T2, T3, T4, T5, T6> : FreeSql.Internal.CommonProvider.Select6Provider<T1, T2, T3, T4, T5, T6> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class
+    class OdbcOracleSelect<T1, T2, T3, T4, T5, T6> : FreeSql.Internal.CommonProvider.Select6Provider<T1, T2, T3, T4, T5, T6> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class
     {
-        public OracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public OdbcOracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
         public override string ToSql(string field = null) => OdbcOracleSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
-    class OracleSelect<T1, T2, T3, T4, T5, T6, T7> : FreeSql.Internal.CommonProvider.Select7Provider<T1, T2, T3, T4, T5, T6, T7> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class
+    class OdbcOracleSelect<T1, T2, T3, T4, T5, T6, T7> : FreeSql.Internal.CommonProvider.Select7Provider<T1, T2, T3, T4, T5, T6, T7> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class
     {
-        public OracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public OdbcOracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
         public override string ToSql(string field = null) => OdbcOracleSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
-    class OracleSelect<T1, T2, T3, T4, T5, T6, T7, T8> : FreeSql.Internal.CommonProvider.Select8Provider<T1, T2, T3, T4, T5, T6, T7, T8> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class where T8 : class
+    class OdbcOracleSelect<T1, T2, T3, T4, T5, T6, T7, T8> : FreeSql.Internal.CommonProvider.Select8Provider<T1, T2, T3, T4, T5, T6, T7, T8> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class where T8 : class
     {
-        public OracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public OdbcOracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
         public override string ToSql(string field = null) => OdbcOracleSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
-    class OracleSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9> : FreeSql.Internal.CommonProvider.Select9Provider<T1, T2, T3, T4, T5, T6, T7, T8, T9> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class where T8 : class where T9 : class
+    class OdbcOracleSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9> : FreeSql.Internal.CommonProvider.Select9Provider<T1, T2, T3, T4, T5, T6, T7, T8, T9> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class where T8 : class where T9 : class
     {
-        public OracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public OdbcOracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
         public override string ToSql(string field = null) => OdbcOracleSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
-    class OracleSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> : FreeSql.Internal.CommonProvider.Select10Provider<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class where T8 : class where T9 : class where T10 : class
+    class OdbcOracleSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> : FreeSql.Internal.CommonProvider.Select10Provider<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class where T8 : class where T9 : class where T10 : class
     {
-        public OracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public OdbcOracleSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
         public override string ToSql(string field = null) => OdbcOracleSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
     }
 }

Providers/FreeSql.Provider.Odbc/Oracle/OdbcOracleCodeFirst.cs

@@ -1,9 +1,7 @@
 using FreeSql.DataAnnotations;
-using FreeSql.DatabaseModel;
 using FreeSql.Internal;
 using FreeSql.Internal.Model;
 using System;
-using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Data;
 using System.Data.Odbc;

Providers/FreeSql.Provider.Odbc/Oracle/OdbcOracleExpression.cs

@@ -385,8 +385,8 @@ namespace FreeSql.Odbc.Oracle
                             case "System.TimeSpan": return $"({left}-{args1})";
                         }
                         break;
-                    case "Equals": return $"({left} = {getExp(exp.Arguments[0])})";
-                    case "CompareTo": return $"extract(day from ({left}-({getExp(exp.Arguments[0])})))";
+                    case "Equals": return $"({left} = {args1})";
+                    case "CompareTo": return $"extract(day from ({left}-({args1})))";
                     case "ToString": return exp.Arguments.Count == 0 ? $"to_char({left},'YYYY-MM-DD HH24:MI:SS.FF6')" : null;
                 }
             }
@@ -421,8 +421,8 @@ namespace FreeSql.Odbc.Oracle
                 {
                     case "Add": return $"({left}+{args1})";
                     case "Subtract": return $"({left}-({args1}))";
-                    case "Equals": return $"({left} = {getExp(exp.Arguments[0])})";
-                    case "CompareTo": return $"extract(day from ({left}-({getExp(exp.Arguments[0])})))";
+                    case "Equals": return $"({left} = {args1})";
+                    case "CompareTo": return $"extract(day from ({left}-({args1})))";
                     case "ToString": return $"to_char({left})";
                 }
             }

Providers/FreeSql.Provider.Odbc/PostgreSQL/Curd/OdbcPostgreSQLDelete.cs

@@ -0,0 +1,95 @@
+using FreeSql.Internal;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FreeSql.Odbc.PostgreSQL
+{
+
+    class OdbcPostgreSQLDelete<T1> : Internal.CommonProvider.DeleteProvider<T1> where T1 : class
+    {
+        public OdbcPostgreSQLDelete(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere)
+            : base(orm, commonUtils, commonExpression, dywhere)
+        {
+        }
+
+        public override List<T1> ExecuteDeleted()
+        {
+            var sql = this.ToSql();
+            if (string.IsNullOrEmpty(sql)) return new List<T1>();
+
+            var sb = new StringBuilder();
+            sb.Append(sql).Append(" RETURNING ");
+
+            var colidx = 0;
+            foreach (var col in _table.Columns.Values)
+            {
+                if (colidx > 0) sb.Append(", ");
+                sb.Append(_commonUtils.QuoteReadColumn(col.Attribute.MapType, _commonUtils.QuoteSqlName(col.Attribute.Name))).Append(" as ").Append(_commonUtils.QuoteSqlName(col.CsName));
+                ++colidx;
+            }
+            sql = sb.ToString();
+            var dbParms = _params.ToArray();
+            var before = new Aop.CurdBeforeEventArgs(_table.Type, Aop.CurdType.Delete, sql, dbParms);
+            _orm.Aop.CurdBefore?.Invoke(this, before);
+            var ret = new List<T1>();
+            Exception exception = null;
+            try
+            {
+                ret = _orm.Ado.Query<T1>(_connection, _transaction, CommandType.Text, sql, dbParms);
+            }
+            catch (Exception ex)
+            {
+                exception = ex;
+                throw ex;
+            }
+            finally
+            {
+                var after = new Aop.CurdAfterEventArgs(before, exception, ret);
+                _orm.Aop.CurdAfter?.Invoke(this, after);
+            }
+            this.ClearData();
+            return ret;
+        }
+        async public override Task<List<T1>> ExecuteDeletedAsync()
+        {
+            var sql = this.ToSql();
+            if (string.IsNullOrEmpty(sql)) return new List<T1>();
+
+            var sb = new StringBuilder();
+            sb.Append(sql).Append(" RETURNING ");
+
+            var colidx = 0;
+            foreach (var col in _table.Columns.Values)
+            {
+                if (colidx > 0) sb.Append(", ");
+                sb.Append(_commonUtils.QuoteReadColumn(col.Attribute.MapType, _commonUtils.QuoteSqlName(col.Attribute.Name))).Append(" as ").Append(_commonUtils.QuoteSqlName(col.CsName));
+                ++colidx;
+            }
+            sql = sb.ToString();
+            var dbParms = _params.ToArray();
+            var before = new Aop.CurdBeforeEventArgs(_table.Type, Aop.CurdType.Delete, sql, dbParms);
+            _orm.Aop.CurdBefore?.Invoke(this, before);
+            var ret = new List<T1>();
+            Exception exception = null;
+            try
+            {
+                ret = await _orm.Ado.QueryAsync<T1>(_connection, _transaction, CommandType.Text, sql, dbParms);
+            }
+            catch (Exception ex)
+            {
+                exception = ex;
+                throw ex;
+            }
+            finally
+            {
+                var after = new Aop.CurdAfterEventArgs(before, exception, ret);
+                _orm.Aop.CurdAfter?.Invoke(this, after);
+            }
+            this.ClearData();
+            return ret;
+        }
+    }
+}

Providers/FreeSql.Provider.Odbc/PostgreSQL/Curd/OdbcPostgreSQLInsert.cs

@@ -0,0 +1,199 @@
+using FreeSql.Internal;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FreeSql.Odbc.PostgreSQL
+{
+
+    class OdbcPostgreSQLInsert<T1> : Internal.CommonProvider.InsertProvider<T1> where T1 : class
+    {
+        public OdbcPostgreSQLInsert(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression)
+            : base(orm, commonUtils, commonExpression)
+        {
+        }
+
+        public override int ExecuteAffrows() => base.SplitExecuteAffrows(5000, 3000);
+        public override Task<int> ExecuteAffrowsAsync() => base.SplitExecuteAffrowsAsync(5000, 3000);
+        public override long ExecuteIdentity() => base.SplitExecuteIdentity(5000, 3000);
+        public override Task<long> ExecuteIdentityAsync() => base.SplitExecuteIdentityAsync(5000, 3000);
+        public override List<T1> ExecuteInserted() => base.SplitExecuteInserted(5000, 3000);
+        public override Task<List<T1>> ExecuteInsertedAsync() => base.SplitExecuteInsertedAsync(5000, 3000);
+
+
+        protected override long RawExecuteIdentity()
+        {
+            var sql = this.ToSql();
+            if (string.IsNullOrEmpty(sql)) return 0;
+
+            long ret = 0;
+            Exception exception = null;
+            Aop.CurdBeforeEventArgs before = null;
+
+            var identCols = _table.Columns.Where(a => a.Value.Attribute.IsIdentity == true);
+            if (identCols.Any() == false)
+            {
+                before = new Aop.CurdBeforeEventArgs(_table.Type, Aop.CurdType.Insert, sql, _params);
+                _orm.Aop.CurdBefore?.Invoke(this, before);
+                try
+                {
+                    ret = _orm.Ado.ExecuteNonQuery(_connection, _transaction, CommandType.Text, sql, _params);
+                }
+                catch (Exception ex)
+                {
+                    exception = ex;
+                    throw ex;
+                }
+                finally
+                {
+                    var after = new Aop.CurdAfterEventArgs(before, exception, ret);
+                    _orm.Aop.CurdAfter?.Invoke(this, after);
+                }
+                return 0;
+            }
+            sql = string.Concat(sql, " RETURNING ", _commonUtils.QuoteSqlName(identCols.First().Value.Attribute.Name));
+            before = new Aop.CurdBeforeEventArgs(_table.Type, Aop.CurdType.Insert, sql, _params);
+            _orm.Aop.CurdBefore?.Invoke(this, before);
+            try
+            {
+                long.TryParse(string.Concat(_orm.Ado.ExecuteScalar(_connection, _transaction, CommandType.Text, sql, _params)), out ret);
+            }
+            catch (Exception ex)
+            {
+                exception = ex;
+                throw ex;
+            }
+            finally
+            {
+                var after = new Aop.CurdAfterEventArgs(before, exception, ret);
+                _orm.Aop.CurdAfter?.Invoke(this, after);
+            }
+            return ret;
+        }
+        async protected override Task<long> RawExecuteIdentityAsync()
+        {
+            var sql = this.ToSql();
+            if (string.IsNullOrEmpty(sql)) return 0;
+
+            long ret = 0;
+            Exception exception = null;
+            Aop.CurdBeforeEventArgs before = null;
+
+            var identCols = _table.Columns.Where(a => a.Value.Attribute.IsIdentity == true);
+            if (identCols.Any() == false)
+            {
+                before = new Aop.CurdBeforeEventArgs(_table.Type, Aop.CurdType.Insert, sql, _params);
+                _orm.Aop.CurdBefore?.Invoke(this, before);
+                try
+                {
+                    ret = await _orm.Ado.ExecuteNonQueryAsync(_connection, _transaction, CommandType.Text, sql, _params);
+                }
+                catch (Exception ex)
+                {
+                    exception = ex;
+                    throw ex;
+                }
+                finally
+                {
+                    var after = new Aop.CurdAfterEventArgs(before, exception, ret);
+                    _orm.Aop.CurdAfter?.Invoke(this, after);
+                }
+                return 0;
+            }
+            sql = string.Concat(sql, " RETURNING ", _commonUtils.QuoteSqlName(identCols.First().Value.Attribute.Name));
+            before = new Aop.CurdBeforeEventArgs(_table.Type, Aop.CurdType.Insert, sql, _params);
+            _orm.Aop.CurdBefore?.Invoke(this, before);
+            try
+            {
+                long.TryParse(string.Concat(await _orm.Ado.ExecuteScalarAsync(_connection, _transaction, CommandType.Text, sql, _params)), out ret);
+            }
+            catch (Exception ex)
+            {
+                exception = ex;
+                throw ex;
+            }
+            finally
+            {
+                var after = new Aop.CurdAfterEventArgs(before, exception, ret);
+                _orm.Aop.CurdAfter?.Invoke(this, after);
+            }
+            return ret;
+        }
+
+        protected override List<T1> RawExecuteInserted()
+        {
+            var sql = this.ToSql();
+            if (string.IsNullOrEmpty(sql)) return new List<T1>();
+
+            var sb = new StringBuilder();
+            sb.Append(sql).Append(" RETURNING ");
+
+            var colidx = 0;
+            foreach (var col in _table.Columns.Values)
+            {
+                if (colidx > 0) sb.Append(", ");
+                sb.Append(_commonUtils.QuoteReadColumn(col.Attribute.MapType, _commonUtils.QuoteSqlName(col.Attribute.Name))).Append(" as ").Append(_commonUtils.QuoteSqlName(col.CsName));
+                ++colidx;
+            }
+            sql = sb.ToString();
+            var before = new Aop.CurdBeforeEventArgs(_table.Type, Aop.CurdType.Insert, sql, _params);
+            _orm.Aop.CurdBefore?.Invoke(this, before);
+            var ret = new List<T1>();
+            Exception exception = null;
+            try
+            {
+                ret = _orm.Ado.Query<T1>(_connection, _transaction, CommandType.Text, sql, _params);
+            }
+            catch (Exception ex)
+            {
+                exception = ex;
+                throw ex;
+            }
+            finally
+            {
+                var after = new Aop.CurdAfterEventArgs(before, exception, ret);
+                _orm.Aop.CurdAfter?.Invoke(this, after);
+            }
+            return ret;
+        }
+        async protected override Task<List<T1>> RawExecuteInsertedAsync()
+        {
+            var sql = this.ToSql();
+            if (string.IsNullOrEmpty(sql)) return new List<T1>();
+
+            var sb = new StringBuilder();
+            sb.Append(sql).Append(" RETURNING ");
+
+            var colidx = 0;
+            foreach (var col in _table.Columns.Values)
+            {
+                if (colidx > 0) sb.Append(", ");
+                sb.Append(_commonUtils.QuoteReadColumn(col.Attribute.MapType, _commonUtils.QuoteSqlName(col.Attribute.Name))).Append(" as ").Append(_commonUtils.QuoteSqlName(col.CsName));
+                ++colidx;
+            }
+            sql = sb.ToString();
+            var before = new Aop.CurdBeforeEventArgs(_table.Type, Aop.CurdType.Insert, sql, _params);
+            _orm.Aop.CurdBefore?.Invoke(this, before);
+            var ret = new List<T1>();
+            Exception exception = null;
+            try
+            {
+                ret = await _orm.Ado.QueryAsync<T1>(_connection, _transaction, CommandType.Text, sql, _params);
+            }
+            catch (Exception ex)
+            {
+                exception = ex;
+                throw ex;
+            }
+            finally
+            {
+                var after = new Aop.CurdAfterEventArgs(before, exception, ret);
+                _orm.Aop.CurdAfter?.Invoke(this, after);
+            }
+            return ret;
+        }
+    }
+}

Providers/FreeSql.Provider.Odbc/PostgreSQL/Curd/OdbcPostgreSQLSelect.cs

@@ -0,0 +1,175 @@
+using FreeSql.Internal;
+using FreeSql.Internal.Model;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+
+namespace FreeSql.Odbc.PostgreSQL
+{
+
+    class OdbcPostgreSQLSelect<T1> : FreeSql.Internal.CommonProvider.Select1Provider<T1> where T1 : class
+    {
+
+        internal static string ToSqlStatic(CommonUtils _commonUtils, CommonExpression _commonExpression, string _select, bool _distinct, string field, StringBuilder _join, StringBuilder _where, string _groupby, string _having, string _orderby, int _skip, int _limit, List<SelectTableInfo> _tables, List<Dictionary<Type, string>> tbUnions, List<LambdaExpression> _whereCascadeExpression, IFreeSql _orm)
+        {
+            if (_orm.CodeFirst.IsAutoSyncStructure)
+                _orm.CodeFirst.SyncStructure(_tables.Select(a => a.Table.Type).ToArray());
+
+            if (_whereCascadeExpression.Any())
+                foreach (var tb in _tables.Where(a => a.Type != SelectTableInfoType.Parent))
+                    tb.Cascade = _commonExpression.GetWhereCascadeSql(tb, _whereCascadeExpression);
+
+            var sb = new StringBuilder();
+            var tbUnionsGt0 = tbUnions.Count > 1;
+            for (var tbUnionsIdx = 0; tbUnionsIdx < tbUnions.Count; tbUnionsIdx++)
+            {
+                if (tbUnionsIdx > 0) sb.Append(" \r\n\r\nUNION ALL\r\n\r\n");
+                if (tbUnionsGt0) sb.Append("select * from (");
+                var tbUnion = tbUnions[tbUnionsIdx];
+
+                var sbnav = new StringBuilder();
+                sb.Append(_select);
+                if (_distinct) sb.Append("DISTINCT ");
+                sb.Append(field).Append(" \r\nFROM ");
+                var tbsjoin = _tables.Where(a => a.Type != SelectTableInfoType.From).ToArray();
+                var tbsfrom = _tables.Where(a => a.Type == SelectTableInfoType.From).ToArray();
+                for (var a = 0; a < tbsfrom.Length; a++)
+                {
+                    sb.Append(_commonUtils.QuoteSqlName(tbUnion[tbsfrom[a].Table.Type])).Append(" ").Append(tbsfrom[a].Alias);
+                    if (tbsjoin.Length > 0)
+                    {
+                        //如果存在 join 查询，则处理 from t1, t2 改为 from t1 inner join t2 on 1 = 1
+                        for (var b = 1; b < tbsfrom.Length; b++)
+                        {
+                            sb.Append(" \r\nLEFT JOIN ").Append(_commonUtils.QuoteSqlName(tbUnion[tbsfrom[b].Table.Type])).Append(" ").Append(tbsfrom[b].Alias);
+
+                            if (string.IsNullOrEmpty(tbsfrom[b].NavigateCondition) && string.IsNullOrEmpty(tbsfrom[b].On) && string.IsNullOrEmpty(tbsfrom[b].Cascade)) sb.Append(" ON 1 = 1");
+                            else
+                            {
+                                sb.Append(" ON ").Append(tbsfrom[b].NavigateCondition ?? tbsfrom[b].On);
+                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false) sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                            }
+                        }
+                        break;
+                    }
+                    else
+                    {
+                        if (!string.IsNullOrEmpty(tbsfrom[a].NavigateCondition)) sbnav.Append(" AND (").Append(tbsfrom[a].NavigateCondition).Append(")");
+                        if (!string.IsNullOrEmpty(tbsfrom[a].On)) sbnav.Append(" AND (").Append(tbsfrom[a].On).Append(")");
+                        if (a > 0 && !string.IsNullOrEmpty(tbsfrom[a].Cascade)) sbnav.Append(" AND (").Append(tbsfrom[a].Cascade).Append(")");
+                    }
+                    if (a < tbsfrom.Length - 1) sb.Append(", ");
+                }
+                foreach (var tb in tbsjoin)
+                {
+                    if (tb.Type == SelectTableInfoType.Parent) continue;
+                    switch (tb.Type)
+                    {
+                        case SelectTableInfoType.LeftJoin:
+                            sb.Append(" \r\nLEFT JOIN ");
+                            break;
+                        case SelectTableInfoType.InnerJoin:
+                            sb.Append(" \r\nINNER JOIN ");
+                            break;
+                        case SelectTableInfoType.RightJoin:
+                            sb.Append(" \r\nRIGHT JOIN ");
+                            break;
+                    }
+                    sb.Append(_commonUtils.QuoteSqlName(tbUnion[tb.Table.Type])).Append(" ").Append(tb.Alias).Append(" ON ").Append(tb.On ?? tb.NavigateCondition);
+                    if (!string.IsNullOrEmpty(tb.Cascade)) sb.Append(" AND (").Append(tb.Cascade).Append(")");
+                    if (!string.IsNullOrEmpty(tb.On) && !string.IsNullOrEmpty(tb.NavigateCondition)) sbnav.Append(" AND (").Append(tb.NavigateCondition).Append(")");
+                }
+                if (_join.Length > 0) sb.Append(_join);
+
+                sbnav.Append(_where);
+                if (!string.IsNullOrEmpty(_tables[0].Cascade))
+                    sbnav.Append(" AND (").Append(_tables[0].Cascade).Append(")");
+
+                foreach (var tb in _tables)
+                {
+                    if (tb.Type == SelectTableInfoType.Parent) continue;
+                    if (string.IsNullOrEmpty(tb.Table.SelectFilter) == false)
+                        sbnav.Append(" AND (").Append(tb.Table.SelectFilter.Replace("a.", $"{tb.Alias}.")).Append(")");
+                }
+                if (sbnav.Length > 0)
+                {
+                    sb.Append(" \r\nWHERE ").Append(sbnav.Remove(0, 5));
+                }
+                if (string.IsNullOrEmpty(_groupby) == false)
+                {
+                    sb.Append(_groupby);
+                    if (string.IsNullOrEmpty(_having) == false)
+                        sb.Append(" \r\nHAVING ").Append(_having.Substring(5));
+                }
+                sb.Append(_orderby);
+                if (_limit > 0)
+                    sb.Append(" \r\nlimit ").Append(_limit);
+                if (_skip > 0)
+                    sb.Append(" \r\noffset ").Append(_skip);
+
+                sbnav.Clear();
+                if (tbUnionsGt0) sb.Append(") ftb");
+            }
+            return sb.ToString();
+        }
+
+        public OdbcPostgreSQLSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override ISelect<T1, T2> From<T2>(Expression<Func<ISelectFromExpression<T1>, T2, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcPostgreSQLSelect<T1, T2>(_orm, _commonUtils, _commonExpression, null); OdbcPostgreSQLSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3> From<T2, T3>(Expression<Func<ISelectFromExpression<T1>, T2, T3, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcPostgreSQLSelect<T1, T2, T3>(_orm, _commonUtils, _commonExpression, null); OdbcPostgreSQLSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4> From<T2, T3, T4>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcPostgreSQLSelect<T1, T2, T3, T4>(_orm, _commonUtils, _commonExpression, null); OdbcPostgreSQLSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5> From<T2, T3, T4, T5>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcPostgreSQLSelect<T1, T2, T3, T4, T5>(_orm, _commonUtils, _commonExpression, null); OdbcPostgreSQLSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6> From<T2, T3, T4, T5, T6>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcPostgreSQLSelect<T1, T2, T3, T4, T5, T6>(_orm, _commonUtils, _commonExpression, null); OdbcPostgreSQLSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6, T7> From<T2, T3, T4, T5, T6, T7>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcPostgreSQLSelect<T1, T2, T3, T4, T5, T6, T7>(_orm, _commonUtils, _commonExpression, null); OdbcPostgreSQLSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6, T7, T8> From<T2, T3, T4, T5, T6, T7, T8>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, T8, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcPostgreSQLSelect<T1, T2, T3, T4, T5, T6, T7, T8>(_orm, _commonUtils, _commonExpression, null); OdbcPostgreSQLSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9> From<T2, T3, T4, T5, T6, T7, T8, T9>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, T8, T9, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcPostgreSQLSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9>(_orm, _commonUtils, _commonExpression, null); OdbcPostgreSQLSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> From<T2, T3, T4, T5, T6, T7, T8, T9, T10>(Expression<Func<ISelectFromExpression<T1>, T2, T3, T4, T5, T6, T7, T8, T9, T10, ISelectFromExpression<T1>>> exp) { this.InternalFrom(exp); var ret = new OdbcPostgreSQLSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>(_orm, _commonUtils, _commonExpression, null); OdbcPostgreSQLSelect<T1>.CopyData(this, ret, exp?.Parameters); return ret; }
+        public override string ToSql(string field = null) => ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+    class OdbcPostgreSQLSelect<T1, T2> : FreeSql.Internal.CommonProvider.Select2Provider<T1, T2> where T1 : class where T2 : class
+    {
+        public OdbcPostgreSQLSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override string ToSql(string field = null) => OdbcPostgreSQLSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+    class OdbcPostgreSQLSelect<T1, T2, T3> : FreeSql.Internal.CommonProvider.Select3Provider<T1, T2, T3> where T1 : class where T2 : class where T3 : class
+    {
+        public OdbcPostgreSQLSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override string ToSql(string field = null) => OdbcPostgreSQLSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+    class OdbcPostgreSQLSelect<T1, T2, T3, T4> : FreeSql.Internal.CommonProvider.Select4Provider<T1, T2, T3, T4> where T1 : class where T2 : class where T3 : class where T4 : class
+    {
+        public OdbcPostgreSQLSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override string ToSql(string field = null) => OdbcPostgreSQLSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+    class OdbcPostgreSQLSelect<T1, T2, T3, T4, T5> : FreeSql.Internal.CommonProvider.Select5Provider<T1, T2, T3, T4, T5> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class
+    {
+        public OdbcPostgreSQLSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override string ToSql(string field = null) => OdbcPostgreSQLSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+    class OdbcPostgreSQLSelect<T1, T2, T3, T4, T5, T6> : FreeSql.Internal.CommonProvider.Select6Provider<T1, T2, T3, T4, T5, T6> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class
+    {
+        public OdbcPostgreSQLSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override string ToSql(string field = null) => OdbcPostgreSQLSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+    class OdbcPostgreSQLSelect<T1, T2, T3, T4, T5, T6, T7> : FreeSql.Internal.CommonProvider.Select7Provider<T1, T2, T3, T4, T5, T6, T7> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class
+    {
+        public OdbcPostgreSQLSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override string ToSql(string field = null) => OdbcPostgreSQLSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+    class OdbcPostgreSQLSelect<T1, T2, T3, T4, T5, T6, T7, T8> : FreeSql.Internal.CommonProvider.Select8Provider<T1, T2, T3, T4, T5, T6, T7, T8> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class where T8 : class
+    {
+        public OdbcPostgreSQLSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override string ToSql(string field = null) => OdbcPostgreSQLSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+    class OdbcPostgreSQLSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9> : FreeSql.Internal.CommonProvider.Select9Provider<T1, T2, T3, T4, T5, T6, T7, T8, T9> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class where T8 : class where T9 : class
+    {
+        public OdbcPostgreSQLSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override string ToSql(string field = null) => OdbcPostgreSQLSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+    class OdbcPostgreSQLSelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> : FreeSql.Internal.CommonProvider.Select10Provider<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> where T1 : class where T2 : class where T3 : class where T4 : class where T5 : class where T6 : class where T7 : class where T8 : class where T9 : class where T10 : class
+    {
+        public OdbcPostgreSQLSelect(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere) : base(orm, commonUtils, commonExpression, dywhere) { }
+        public override string ToSql(string field = null) => OdbcPostgreSQLSelect<T1>.ToSqlStatic(_commonUtils, _commonExpression, _select, _distinct, field ?? this.GetAllFieldExpressionTreeLevel2().Field, _join, _where, _groupby, _having, _orderby, _skip, _limit, _tables, this.GetTableRuleUnions(), _whereCascadeExpression, _orm);
+    }
+}

Providers/FreeSql.Provider.Odbc/PostgreSQL/Curd/OdbcPostgreSQLUpdate.cs

@@ -0,0 +1,149 @@
+using FreeSql.Internal;
+using FreeSql.Internal.Model;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FreeSql.Odbc.PostgreSQL
+{
+
+    class OdbcPostgreSQLUpdate<T1> : Internal.CommonProvider.UpdateProvider<T1> where T1 : class
+    {
+
+        public OdbcPostgreSQLUpdate(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere)
+            : base(orm, commonUtils, commonExpression, dywhere)
+        {
+        }
+
+        public override int ExecuteAffrows() => base.SplitExecuteAffrows(500, 3000);
+        public override Task<int> ExecuteAffrowsAsync() => base.SplitExecuteAffrowsAsync(500, 3000);
+        public override List<T1> ExecuteUpdated() => base.SplitExecuteUpdated(500, 3000);
+        public override Task<List<T1>> ExecuteUpdatedAsync() => base.SplitExecuteUpdatedAsync(500, 3000);
+
+
+        protected override List<T1> RawExecuteUpdated()
+        {
+            var sql = this.ToSql();
+            if (string.IsNullOrEmpty(sql)) return new List<T1>();
+
+            var sb = new StringBuilder();
+            sb.Append(sql).Append(" RETURNING ");
+
+            var colidx = 0;
+            foreach (var col in _table.Columns.Values)
+            {
+                if (colidx > 0) sb.Append(", ");
+                sb.Append(_commonUtils.QuoteReadColumn(col.Attribute.MapType, _commonUtils.QuoteSqlName(col.Attribute.Name))).Append(" as ").Append(_commonUtils.QuoteSqlName(col.CsName));
+                ++colidx;
+            }
+            sql = sb.ToString();
+            var dbParms = _params.Concat(_paramsSource).ToArray();
+            var before = new Aop.CurdBeforeEventArgs(_table.Type, Aop.CurdType.Update, sql, dbParms);
+            _orm.Aop.CurdBefore?.Invoke(this, before);
+            var ret = new List<T1>();
+            Exception exception = null;
+            try
+            {
+                ret = _orm.Ado.Query<T1>(_connection, _transaction, CommandType.Text, sql, dbParms);
+                ValidateVersionAndThrow(ret.Count);
+            }
+            catch (Exception ex)
+            {
+                exception = ex;
+                throw ex;
+            }
+            finally
+            {
+                var after = new Aop.CurdAfterEventArgs(before, exception, ret);
+                _orm.Aop.CurdAfter?.Invoke(this, after);
+            }
+            return ret;
+        }
+        async protected override Task<List<T1>> RawExecuteUpdatedAsync()
+        {
+            var sql = this.ToSql();
+            if (string.IsNullOrEmpty(sql)) return new List<T1>();
+
+            var sb = new StringBuilder();
+            sb.Append(sql).Append(" RETURNING ");
+
+            var colidx = 0;
+            foreach (var col in _table.Columns.Values)
+            {
+                if (colidx > 0) sb.Append(", ");
+                sb.Append(_commonUtils.QuoteReadColumn(col.Attribute.MapType, _commonUtils.QuoteSqlName(col.Attribute.Name))).Append(" as ").Append(_commonUtils.QuoteSqlName(col.CsName));
+                ++colidx;
+            }
+            sql = sb.ToString();
+            var dbParms = _params.Concat(_paramsSource).ToArray();
+            var before = new Aop.CurdBeforeEventArgs(_table.Type, Aop.CurdType.Update, sql, dbParms);
+            _orm.Aop.CurdBefore?.Invoke(this, before);
+            var ret = new List<T1>();
+            Exception exception = null;
+            try
+            {
+                ret = await _orm.Ado.QueryAsync<T1>(_connection, _transaction, CommandType.Text, sql, dbParms);
+                ValidateVersionAndThrow(ret.Count);
+            }
+            catch (Exception ex)
+            {
+                exception = ex;
+                throw ex;
+            }
+            finally
+            {
+                var after = new Aop.CurdAfterEventArgs(before, exception, ret);
+                _orm.Aop.CurdAfter?.Invoke(this, after);
+            }
+            return ret;
+        }
+
+        protected override void ToSqlCase(StringBuilder caseWhen, ColumnInfo[] primarys)
+        {
+            if (_table.Primarys.Length == 1)
+            {
+                caseWhen.Append(_commonUtils.QuoteReadColumn(_table.Primarys.First().Attribute.MapType, _commonUtils.QuoteSqlName(_table.Primarys.First().Attribute.Name)));
+                return;
+            }
+            caseWhen.Append("(");
+            var pkidx = 0;
+            foreach (var pk in _table.Primarys)
+            {
+                if (pkidx > 0) caseWhen.Append(" || ");
+                caseWhen.Append(_commonUtils.QuoteReadColumn(pk.Attribute.MapType, _commonUtils.QuoteSqlName(pk.Attribute.Name))).Append("::varchar");
+                ++pkidx;
+            }
+            caseWhen.Append(")");
+        }
+
+        protected override void ToSqlWhen(StringBuilder sb, ColumnInfo[] primarys, object d)
+        {
+            if (_table.Primarys.Length == 1)
+            {
+                sb.Append(_commonUtils.FormatSql("{0}", _table.Primarys.First().GetMapValue(d)));
+                return;
+            }
+            sb.Append("(");
+            var pkidx = 0;
+            foreach (var pk in _table.Primarys)
+            {
+                if (pkidx > 0) sb.Append(" || ");
+                sb.Append(_commonUtils.FormatSql("{0}", pk.GetMapValue(d))).Append("::varchar");
+                ++pkidx;
+            }
+            sb.Append(")");
+        }
+
+        protected override void ToSqlCaseWhenEnd(StringBuilder sb, ColumnInfo col)
+        {
+            if (_noneParameter == false) return;
+            var dbtype = _commonUtils.CodeFirst.GetDbInfo(col.Attribute.MapType)?.dbtype;
+            if (dbtype == null) return;
+
+            sb.Append("::").Append(dbtype);
+        }
+    }
+}

Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLAdo/OdbcPostgreSQLAdo.cs

@@ -0,0 +1,71 @@
+using FreeSql.Internal;
+using SafeObjectPool;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Data.Common;
+using System.Data.Odbc;
+using System.Text;
+using System.Threading;
+
+namespace FreeSql.Odbc.PostgreSQL
+{
+    class OdbcPostgreSQLAdo : FreeSql.Internal.CommonProvider.AdoProvider
+    {
+        public OdbcPostgreSQLAdo() : base(DataType.PostgreSQL) { }
+        public OdbcPostgreSQLAdo(CommonUtils util, string masterConnectionString, string[] slaveConnectionStrings) : base(DataType.PostgreSQL)
+        {
+            base._util = util;
+            if (!string.IsNullOrEmpty(masterConnectionString))
+                MasterPool = new OdbcPostgreSQLConnectionPool("主库", masterConnectionString, null, null);
+            if (slaveConnectionStrings != null)
+            {
+                foreach (var slaveConnectionString in slaveConnectionStrings)
+                {
+                    var slavePool = new OdbcPostgreSQLConnectionPool($"从库{SlavePools.Count + 1}", slaveConnectionString, () => Interlocked.Decrement(ref slaveUnavailables), () => Interlocked.Increment(ref slaveUnavailables));
+                    SlavePools.Add(slavePool);
+                }
+            }
+        }
+
+        static DateTime dt1970 = new DateTime(1970, 1, 1);
+        public override object AddslashesProcessParam(object param, Type mapType)
+        {
+            if (param == null) return "NULL";
+            if (mapType != null && mapType != param.GetType())
+                param = Utils.GetDataReaderValue(mapType, param);
+            if (param is bool || param is bool?)
+                return (bool)param ? "'t'" : "'f'";
+            else if (param is string || param is char)
+                return string.Concat("'", param.ToString().Replace("'", "''"), "'");
+            else if (param is Enum)
+                return ((Enum)param).ToInt64();
+            else if (decimal.TryParse(string.Concat(param), out var trydec))
+                return param;
+            else if (param is DateTime || param is DateTime?)
+                return string.Concat("'", ((DateTime)param).ToString("yyyy-MM-dd HH:mm:ss.ffffff"), "'");
+            else if (param is TimeSpan || param is TimeSpan?)
+                return ((TimeSpan)param).Ticks / 10;
+            else if (param is IEnumerable)
+            {
+                var sb = new StringBuilder();
+                var ie = param as IEnumerable;
+                foreach (var z in ie) sb.Append(",").Append(AddslashesProcessParam(z, mapType));
+                return sb.Length == 0 ? "(NULL)" : sb.Remove(0, 1).Insert(0, "(").Append(")").ToString();
+            }
+            return string.Concat("'", param.ToString().Replace("'", "''"), "'");
+        }
+
+        protected override DbCommand CreateCommand()
+        {
+            return new OdbcCommand();
+        }
+
+        protected override void ReturnConnection(ObjectPool<DbConnection> pool, Object<DbConnection> conn, Exception ex)
+        {
+            (pool as OdbcPostgreSQLConnectionPool).Return(conn, ex);
+        }
+
+        protected override DbParameter[] GetDbParamtersByObject(string sql, object obj) => _util.GetDbParamtersByObject(sql, obj);
+    }
+}

Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLAdo/OdbcPostgreSQLConnectionPool.cs

@@ -0,0 +1,241 @@
+using SafeObjectPool;
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Data;
+using System.Data.Common;
+using System.Data.Odbc;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+
+namespace FreeSql.Odbc.PostgreSQL
+{
+
+    class OdbcPostgreSQLConnectionPool : ObjectPool<DbConnection>
+    {
+
+        internal Action availableHandler;
+        internal Action unavailableHandler;
+
+        public OdbcPostgreSQLConnectionPool(string name, string connectionString, Action availableHandler, Action unavailableHandler) : base(null)
+        {
+            var policy = new OdbcPostgreSQLConnectionPoolPolicy
+            {
+                _pool = this,
+                Name = name
+            };
+            this.Policy = policy;
+            policy.ConnectionString = connectionString;
+
+            this.availableHandler = availableHandler;
+            this.unavailableHandler = unavailableHandler;
+        }
+
+        public void Return(Object<DbConnection> obj, Exception exception, bool isRecreate = false)
+        {
+            if (exception != null && exception is OdbcException)
+            {
+
+                if (exception is System.IO.IOException)
+                {
+
+                    base.SetUnavailable(exception);
+
+                }
+                else if (obj.Value.Ping() == false)
+                {
+
+                    base.SetUnavailable(exception);
+                }
+            }
+            base.Return(obj, isRecreate);
+        }
+    }
+
+    class OdbcPostgreSQLConnectionPoolPolicy : IPolicy<DbConnection>
+    {
+
+        internal OdbcPostgreSQLConnectionPool _pool;
+        public string Name { get; set; } = "PostgreSQL NpgsqlConnection 对象池";
+        public int PoolSize { get; set; } = 50;
+        public TimeSpan SyncGetTimeout { get; set; } = TimeSpan.FromSeconds(10);
+        public TimeSpan IdleTimeout { get; set; } = TimeSpan.Zero;
+        public int AsyncGetCapacity { get; set; } = 10000;
+        public bool IsThrowGetTimeoutException { get; set; } = true;
+        public int CheckAvailableInterval { get; set; } = 5;
+
+        static ConcurrentDictionary<string, int> dicConnStrIncr = new ConcurrentDictionary<string, int>(StringComparer.CurrentCultureIgnoreCase);
+        private string _connectionString;
+        public string ConnectionString
+        {
+            get => _connectionString;
+            set
+            {
+                _connectionString = value ?? "";
+
+                var pattern = @"Max(imum)?\s*pool\s*size\s*=\s*(\d+)";
+                Match m = Regex.Match(_connectionString, pattern, RegexOptions.IgnoreCase);
+                if (m.Success == false || int.TryParse(m.Groups[2].Value, out var poolsize) == false || poolsize <= 0) poolsize = 50;
+                var connStrIncr = dicConnStrIncr.AddOrUpdate(_connectionString, 1, (oldkey, oldval) => oldval + 1);
+                PoolSize = poolsize + connStrIncr;
+                _connectionString = m.Success ?
+                    Regex.Replace(_connectionString, pattern, $"Maximum pool size={PoolSize}", RegexOptions.IgnoreCase) :
+                    $"{_connectionString};Maximum pool size={PoolSize}";
+
+                pattern = @"Connection\s*LifeTime\s*=\s*(\d+)";
+                m = Regex.Match(_connectionString, pattern, RegexOptions.IgnoreCase);
+                if (m.Success)
+                {
+                    IdleTimeout = TimeSpan.FromSeconds(int.Parse(m.Groups[1].Value));
+                    _connectionString = Regex.Replace(_connectionString, pattern, "", RegexOptions.IgnoreCase);
+                }
+
+                var minPoolSize = 0;
+                pattern = @"Min(imum)?\s*pool\s*size\s*=\s*(\d+)";
+                m = Regex.Match(_connectionString, pattern, RegexOptions.IgnoreCase);
+                if (m.Success)
+                {
+                    minPoolSize = int.Parse(m.Groups[2].Value);
+                    _connectionString = Regex.Replace(_connectionString, pattern, "", RegexOptions.IgnoreCase);
+                }
+
+                FreeSql.Internal.CommonUtils.PrevReheatConnectionPool(_pool, minPoolSize);
+            }
+        }
+
+        public bool OnCheckAvailable(Object<DbConnection> obj)
+        {
+            if (obj.Value.State == ConnectionState.Closed) obj.Value.Open();
+            return obj.Value.Ping(true);
+        }
+
+        public DbConnection OnCreate()
+        {
+            var conn = new OdbcConnection(_connectionString);
+            return conn;
+        }
+
+        public void OnDestroy(DbConnection obj)
+        {
+            if (obj.State != ConnectionState.Closed) obj.Close();
+            obj.Dispose();
+        }
+
+        public void OnGet(Object<DbConnection> obj)
+        {
+
+            if (_pool.IsAvailable)
+            {
+                if (obj.Value == null)
+                {
+                    if (_pool.SetUnavailable(new Exception("连接字符串错误")) == true)
+                        throw new Exception($"【{this.Name}】连接字符串错误，请检查。");
+                    return;
+                }
+
+                if (obj.Value.State != ConnectionState.Open || DateTime.Now.Subtract(obj.LastReturnTime).TotalSeconds > 60 && obj.Value.Ping() == false)
+                {
+
+                    try
+                    {
+                        obj.Value.Open();
+                    }
+                    catch (Exception ex)
+                    {
+                        if (_pool.SetUnavailable(ex) == true)
+                            throw new Exception($"【{this.Name}】状态不可用，等待后台检查程序恢复方可使用。{ex.Message}");
+                    }
+                }
+            }
+        }
+
+        async public Task OnGetAsync(Object<DbConnection> obj)
+        {
+
+            if (_pool.IsAvailable)
+            {
+                if (obj.Value == null)
+                {
+                    if (_pool.SetUnavailable(new Exception("连接字符串错误")) == true)
+                        throw new Exception($"【{this.Name}】连接字符串错误，请检查。");
+                    return;
+                }
+
+                if (obj.Value.State != ConnectionState.Open || DateTime.Now.Subtract(obj.LastReturnTime).TotalSeconds > 60 && (await obj.Value.PingAsync()) == false)
+                {
+
+                    try
+                    {
+                        await obj.Value.OpenAsync();
+                    }
+                    catch (Exception ex)
+                    {
+                        if (_pool.SetUnavailable(ex) == true)
+                            throw new Exception($"【{this.Name}】状态不可用，等待后台检查程序恢复方可使用。{ex.Message}");
+                    }
+                }
+            }
+        }
+
+        public void OnGetTimeout()
+        {
+
+        }
+
+        public void OnReturn(Object<DbConnection> obj)
+        {
+
+        }
+
+        public void OnAvailable()
+        {
+            _pool.availableHandler?.Invoke();
+        }
+
+        public void OnUnavailable()
+        {
+            _pool.unavailableHandler?.Invoke();
+        }
+    }
+
+    static class DbConnectionExtensions
+    {
+
+        static DbCommand PingCommand(DbConnection conn)
+        {
+            var cmd = conn.CreateCommand();
+            cmd.CommandTimeout = 5;
+            cmd.CommandText = "select 1";
+            return cmd;
+        }
+        public static bool Ping(this DbConnection that, bool isThrow = false)
+        {
+            try
+            {
+                PingCommand(that).ExecuteNonQuery();
+                return true;
+            }
+            catch
+            {
+                if (that.State != ConnectionState.Closed) try { that.Close(); } catch { }
+                if (isThrow) throw;
+                return false;
+            }
+        }
+        async public static Task<bool> PingAsync(this DbConnection that, bool isThrow = false)
+        {
+            try
+            {
+                await PingCommand(that).ExecuteNonQueryAsync();
+                return true;
+            }
+            catch
+            {
+                if (that.State != ConnectionState.Closed) try { that.Close(); } catch { }
+                if (isThrow) throw;
+                return false;
+            }
+        }
+    }
+}

Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLCodeFirst.cs

@@ -0,0 +1,342 @@
+using FreeSql.Internal;
+using FreeSql.Internal.Model;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Data.Odbc;
+using System.Linq;
+using System.Text;
+
+namespace FreeSql.Odbc.PostgreSQL
+{
+
+    class OdbcPostgreSQLCodeFirst : Internal.CommonProvider.CodeFirstProvider
+    {
+        public override bool IsNoneCommandParameter { get => true; set => base.IsNoneCommandParameter = true; }
+        public OdbcPostgreSQLCodeFirst(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression) : base(orm, commonUtils, commonExpression) { }
+
+        static object _dicCsToDbLock = new object();
+        static Dictionary<string, (OdbcType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable, object defaultValue)> _dicCsToDb = new Dictionary<string, (OdbcType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable, object defaultValue)>() {
+
+                { typeof(sbyte).FullName,  (OdbcType.SmallInt, "int2","int2 NOT NULL", false, false, 0) },{ typeof(sbyte?).FullName,  (OdbcType.SmallInt, "int2", "int2", false, true, null) },
+                { typeof(short).FullName,  (OdbcType.SmallInt, "int2","int2 NOT NULL", false, false, 0) },{ typeof(short?).FullName,  (OdbcType.SmallInt, "int2", "int2", false, true, null) },
+                { typeof(int).FullName,  (OdbcType.Int, "int4","int4 NOT NULL", false, false, 0) },{ typeof(int?).FullName,  (OdbcType.Int, "int4", "int4", false, true, null) },
+                { typeof(long).FullName,  (OdbcType.BigInt, "int8","int8 NOT NULL", false, false, 0) },{ typeof(long?).FullName,  (OdbcType.BigInt, "int8", "int8", false, true, null) },
+
+                { typeof(byte).FullName,  (OdbcType.SmallInt, "int2","int2 NOT NULL", false, false, 0) },{ typeof(byte?).FullName,  (OdbcType.SmallInt, "int2", "int2", false, true, null) },
+                { typeof(ushort).FullName,  (OdbcType.Int, "int4","int4 NOT NULL", false, false, 0) },{ typeof(ushort?).FullName,  (OdbcType.Int, "int4", "int4", false, true, null) },
+                { typeof(uint).FullName,  (OdbcType.BigInt, "int8","int8 NOT NULL", false, false, 0) },{ typeof(uint?).FullName,  (OdbcType.BigInt, "int8", "int8", false, true, null) },
+                { typeof(ulong).FullName,  (OdbcType.Numeric, "numeric","numeric(20,0) NOT NULL", false, false, 0) },{ typeof(ulong?).FullName,  (OdbcType.Numeric, "numeric", "numeric(20,0)", false, true, null) },
+
+                { typeof(float).FullName,  (OdbcType.Real, "float4","float4 NOT NULL", false, false, 0) },{ typeof(float?).FullName,  (OdbcType.Real, "float4", "float4", false, true, null) },
+                { typeof(double).FullName,  (OdbcType.Double, "float8","float8 NOT NULL", false, false, 0) },{ typeof(double?).FullName,  (OdbcType.Double, "float8", "float8", false, true, null) },
+                { typeof(decimal).FullName,  (OdbcType.Numeric, "numeric", "numeric(10,2) NOT NULL", false, false, 0) },{ typeof(decimal?).FullName,  (OdbcType.Numeric, "numeric", "numeric(10,2)", false, true, null) },
+
+                { typeof(string).FullName,  (OdbcType.VarChar, "varchar", "varchar(255)", false, null, "") },
+
+                { typeof(TimeSpan).FullName,  (OdbcType.Time, "time","time NOT NULL", false, false, 0) },{ typeof(TimeSpan?).FullName,  (OdbcType.Time, "time", "time",false, true, null) },
+                { typeof(DateTime).FullName,  (OdbcType.DateTime, "timestamp", "timestamp NOT NULL", false, false, new DateTime(1970,1,1)) },{ typeof(DateTime?).FullName,  (OdbcType.DateTime, "timestamp", "timestamp", false, true, null) },
+
+                { typeof(bool).FullName,  (OdbcType.Bit, "bool","bool NOT NULL", null, false, false) },{ typeof(bool?).FullName,  (OdbcType.Bit, "bool","bool", null, true, null) },
+                { typeof(Byte[]).FullName,  (OdbcType.VarBinary, "bytea", "bytea", false, null, new byte[0]) },
+
+                { typeof(Guid).FullName,  (OdbcType.UniqueIdentifier, "uuid", "uuid NOT NULL", false, false, Guid.Empty) },{ typeof(Guid?).FullName,  (OdbcType.UniqueIdentifier, "uuid", "uuid", false, true, null) },
+            };
+
+        public override (int type, string dbtype, string dbtypeFull, bool? isnullable, object defaultValue)? GetDbInfo(Type type)
+        {
+            var isarray = type.FullName != "System.Byte[]" && type.IsArray;
+            var elementType = isarray ? type.GetElementType() : type;
+            var info = GetDbInfoNoneArray(elementType);
+            if (info == null) return null;
+            return ((int)info.Value.type, info.Value.dbtype, info.Value.dbtypeFull, info.Value.isnullable, info.Value.defaultValue);
+        }
+        (OdbcType type, string dbtype, string dbtypeFull, bool? isnullable, object defaultValue)? GetDbInfoNoneArray(Type type)
+        {
+            if (_dicCsToDb.TryGetValue(type.FullName, out var trydc)) return new (OdbcType, string, string, bool?, object)?((trydc.type, trydc.dbtype, trydc.dbtypeFull, trydc.isnullable, trydc.defaultValue));
+            if (type.IsArray) return null;
+            var enumType = type.IsEnum ? type : null;
+            if (enumType == null && type.IsNullableType() && type.GenericTypeArguments.Length == 1 && type.GenericTypeArguments.First().IsEnum) enumType = type.GenericTypeArguments.First();
+            if (enumType != null)
+            {
+                var newItem = enumType.GetCustomAttributes(typeof(FlagsAttribute), false).Any() ?
+                    (OdbcType.Int, "int8", $"int8{(type.IsEnum ? " NOT NULL" : "")}", false, type.IsEnum ? false : true, Enum.GetValues(enumType).GetValue(0)) :
+                    (OdbcType.BigInt, "int4", $"int4{(type.IsEnum ? " NOT NULL" : "")}", false, type.IsEnum ? false : true, Enum.GetValues(enumType).GetValue(0));
+                if (_dicCsToDb.ContainsKey(type.FullName) == false)
+                {
+                    lock (_dicCsToDbLock)
+                    {
+                        if (_dicCsToDb.ContainsKey(type.FullName) == false)
+                            _dicCsToDb.Add(type.FullName, newItem);
+                    }
+                }
+                return (newItem.Item1, newItem.Item2, newItem.Item3, newItem.Item5, newItem.Item6);
+            }
+            return null;
+        }
+
+        public override string GetComparisonDDLStatements(params Type[] entityTypes)
+        {
+            var sb = new StringBuilder();
+            var seqcols = new List<(ColumnInfo, string[], bool)>(); //序列
+
+            foreach (var entityType in entityTypes)
+            {
+                if (sb.Length > 0) sb.Append("\r\n");
+                var tb = _commonUtils.GetTableByEntity(entityType);
+                if (tb == null) throw new Exception($"类型 {entityType.FullName} 不可迁移");
+                if (tb.Columns.Any() == false) throw new Exception($"类型 {entityType.FullName} 不可迁移，可迁移属性0个");
+                var tbname = tb.DbName.Split(new[] { '.' }, 2);
+                if (tbname?.Length == 1) tbname = new[] { "public", tbname[0] };
+
+                var tboldname = tb.DbOldName?.Split(new[] { '.' }, 2); //旧表名
+                if (tboldname?.Length == 1) tboldname = new[] { "public", tboldname[0] };
+
+                if (string.Compare(tbname[0], "public", true) != 0 && _orm.Ado.ExecuteScalar(CommandType.Text, _commonUtils.FormatSql(" select 1 from pg_namespace where nspname={0}", tbname[0])) == null) //创建模式
+                    sb.Append("CREATE SCHEMA IF NOT EXISTS ").Append(tbname[0]).Append(";\r\n");
+
+                var sbalter = new StringBuilder();
+                var istmpatler = false; //创建临时表，导入数据，删除旧表，修改
+                if (_orm.Ado.ExecuteScalar(CommandType.Text, string.Format(" select 1 from pg_tables a inner join pg_namespace b on b.nspname = a.schemaname where b.nspname || '.' || a.tablename = '{0}.{1}'", tbname)) == null)
+                { //表不存在
+                    if (tboldname != null)
+                    {
+                        if (_orm.Ado.ExecuteScalar(CommandType.Text, string.Format(" select 1 from pg_tables a inner join pg_namespace b on b.nspname = a.schemaname where b.nspname || '.' || a.tablename = '{0}.{1}'", tboldname)) == null)
+                            //旧表不存在
+                            tboldname = null;
+                    }
+                    if (tboldname == null)
+                    {
+                        //创建表
+                        sb.Append("CREATE TABLE IF NOT EXISTS ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ( ");
+                        foreach (var tbcol in tb.ColumnsByPosition)
+                        {
+                            sb.Append(" \r\n  ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ").Append(tbcol.Attribute.DbType).Append(",");
+                            if (tbcol.Attribute.IsIdentity == true) seqcols.Add((tbcol, tbname, true));
+                        }
+                        if (tb.Primarys.Any())
+                        {
+                            sb.Append(" \r\n  CONSTRAINT ").Append(tbname[0]).Append("_").Append(tbname[1]).Append("_pkey PRIMARY KEY (");
+                            foreach (var tbcol in tb.Primarys) sb.Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(", ");
+                            sb.Remove(sb.Length - 2, 2).Append("),");
+                        }
+                        foreach (var uk in tb.Uniques)
+                        {
+                            sb.Append(" \r\n  CONSTRAINT ").Append(_commonUtils.QuoteSqlName(uk.Key)).Append(" UNIQUE(");
+                            foreach (var tbcol in uk.Value) sb.Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(", ");
+                            sb.Remove(sb.Length - 2, 2).Append("),");
+                        }
+                        sb.Remove(sb.Length - 1, 1);
+                        sb.Append("\r\n) WITH (OIDS=FALSE);\r\n");
+                        //备注
+                        foreach (var tbcol in tb.ColumnsByPosition)
+                        {
+                            if (string.IsNullOrEmpty(tbcol.Comment) == false)
+                                sb.Append("COMMENT ON COLUMN ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}.{tbcol.Attribute.Name}")).Append(" IS ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment)).Append(";\r\n");
+                        }
+                        continue;
+                    }
+                    //如果新表，旧表在一个数据库和模式下，直接修改表名
+                    if (string.Compare(tbname[0], tboldname[0], true) == 0)
+                        sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tboldname[0]}.{tboldname[1]}")).Append(" RENAME TO ").Append(_commonUtils.QuoteSqlName($"{tbname[1]}")).Append(";\r\n");
+                    else
+                    {
+                        //如果新表，旧表不在一起，创建新表，导入数据，删除旧表
+                        istmpatler = true;
+                    }
+                }
+                else
+                    tboldname = null; //如果新表已经存在，不走改表名逻辑
+
+                //对比字段，只可以修改类型、增加字段、有限的修改字段名；保证安全不删除字段
+                var sql = _commonUtils.FormatSql(@"
+select
+a.attname,
+t.typname,
+case when a.atttypmod > 0 and a.atttypmod < 32767 then a.atttypmod - 4 else a.attlen end len,
+case when t.typelem > 0 and t.typinput::varchar = 'array_in' then t2.typname else t.typname end,
+case when a.attnotnull then '0' else '1' end as is_nullable,
+e.adsrc,
+a.attndims,
+d.description as comment
+from pg_class c
+inner join pg_attribute a on a.attnum > 0 and a.attrelid = c.oid
+inner join pg_type t on t.oid = a.atttypid
+left join pg_type t2 on t2.oid = t.typelem
+left join pg_description d on d.objoid = a.attrelid and d.objsubid = a.attnum
+left join pg_attrdef e on e.adrelid = a.attrelid and e.adnum = a.attnum
+inner join pg_namespace ns on ns.oid = c.relnamespace
+inner join pg_namespace ns2 on ns2.oid = t.typnamespace
+where ns.nspname = {0} and c.relname = {1}", tboldname ?? tbname);
+                var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
+                var tbstruct = ds.ToDictionary(a => string.Concat(a[0]), a =>
+                {
+                    var attndims = int.Parse(string.Concat(a[6]));
+                    var type = string.Concat(a[1]);
+                    var sqlType = string.Concat(a[3]);
+                    var max_length = long.Parse(string.Concat(a[2]));
+                    switch (sqlType.ToLower())
+                    {
+                        case "bool": case "name": case "bit": case "varbit": case "bpchar": case "varchar": case "bytea": case "text": case "uuid": break;
+                        default: max_length *= 8; break;
+                    }
+                    if (type.StartsWith("_"))
+                    {
+                        type = type.Substring(1);
+                        if (attndims == 0) attndims++;
+                    }
+                    if (sqlType.StartsWith("_")) sqlType = sqlType.Substring(1);
+                    return new
+                    {
+                        column = string.Concat(a[0]),
+                        sqlType = string.Concat(sqlType),
+                        max_length = long.Parse(string.Concat(a[2])),
+                        is_nullable = string.Concat(a[4]) == "1",
+                        is_identity = string.Concat(a[5]).StartsWith(@"nextval('") && string.Concat(a[5]).EndsWith(@"'::regclass)"),
+                        attndims,
+                        comment = string.Concat(a[7])
+                    };
+                }, StringComparer.CurrentCultureIgnoreCase);
+
+                if (istmpatler == false)
+                {
+                    foreach (var tbcol in tb.ColumnsByPosition)
+                    {
+                        if (tbstruct.TryGetValue(tbcol.Attribute.Name, out var tbstructcol) ||
+                            string.IsNullOrEmpty(tbcol.Attribute.OldName) == false && tbstruct.TryGetValue(tbcol.Attribute.OldName, out tbstructcol))
+                        {
+                            var isCommentChanged = tbstructcol.comment != (tbcol.Comment ?? "");
+                            if (tbcol.Attribute.DbType.StartsWith(tbstructcol.sqlType, StringComparison.CurrentCultureIgnoreCase) == false ||
+                                tbcol.Attribute.DbType.Contains("[]") != (tbstructcol.attndims > 0))
+                                sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ALTER COLUMN ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" TYPE ").Append(tbcol.Attribute.DbType.Split(' ').First()).Append(";\r\n");
+                            if (tbcol.Attribute.IsNullable != tbstructcol.is_nullable)
+                            {
+                                if (tbcol.Attribute.IsNullable != true || tbcol.Attribute.IsNullable == true && tbcol.Attribute.IsPrimary == false)
+                                    sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ALTER COLUMN ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" ").Append(tbcol.Attribute.IsNullable == true ? "DROP" : "SET").Append(" NOT NULL;\r\n");
+                            }
+                            if (tbcol.Attribute.IsIdentity != tbstructcol.is_identity)
+                                seqcols.Add((tbcol, tbname, tbcol.Attribute.IsIdentity == true));
+                            if (string.Compare(tbstructcol.column, tbcol.Attribute.OldName, true) == 0)
+                                //修改列名
+                                sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" RENAME COLUMN ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" TO ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(";\r\n");
+                            if (isCommentChanged)
+                                sbalter.Append("COMMENT ON COLUMN ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}.{tbcol.Attribute.Name}")).Append(" IS ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment)).Append(";\r\n");
+                            continue;
+                        }
+                        //添加列
+                        sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ADD COLUMN ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ").Append(tbcol.Attribute.DbType.Split(' ').First()).Append(";\r\n");
+                        sbalter.Append("UPDATE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" SET ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" = ").Append(_commonUtils.FormatSql("{0};\r\n", tbcol.Attribute.DbDefautValue));
+                        if (tbcol.Attribute.IsNullable == false) sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ALTER COLUMN ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" SET NOT NULL;\r\n");
+                        if (tbcol.Attribute.IsIdentity == true) seqcols.Add((tbcol, tbname, tbcol.Attribute.IsIdentity == true));
+                        if (string.IsNullOrEmpty(tbcol.Comment) == false) sbalter.Append("COMMENT ON COLUMN ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}.{tbcol.Attribute.Name}")).Append(" IS ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment)).Append(";\r\n");
+                    }
+                    var dsuksql = _commonUtils.FormatSql(@"
+select
+c.attname,
+b.relname
+from pg_index a
+inner join pg_class b on b.oid = a.indexrelid
+inner join pg_attribute c on c.attnum > 0 and c.attrelid = b.oid
+inner join pg_namespace ns on ns.oid = b.relnamespace
+inner join pg_class d on d.oid = a.indrelid
+where ns.nspname in ({0}) and d.relname in ({1}) and a.indisunique = 't'", tboldname ?? tbname);
+                    var dsuk = _orm.Ado.ExecuteArray(CommandType.Text, dsuksql).Select(a => new[] { string.Concat(a[0]), string.Concat(a[1]) });
+                    foreach (var uk in tb.Uniques)
+                    {
+                        if (string.IsNullOrEmpty(uk.Key) || uk.Value.Any() == false) continue;
+                        var dsukfind1 = dsuk.Where(a => string.Compare(a[1], uk.Key, true) == 0).ToArray();
+                        if (dsukfind1.Any() == false || dsukfind1.Length != uk.Value.Count || dsukfind1.Where(a => uk.Value.Where(b => string.Compare(b.Attribute.Name, a[0], true) == 0).Any()).Count() != uk.Value.Count)
+                        {
+                            if (dsukfind1.Any()) sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" DROP CONSTRAINT ").Append(_commonUtils.QuoteSqlName(uk.Key)).Append(";\r\n");
+                            sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ADD CONSTRAINT ").Append(_commonUtils.QuoteSqlName(uk.Key)).Append(" UNIQUE(");
+                            foreach (var tbcol in uk.Value) sbalter.Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(", ");
+                            sbalter.Remove(sbalter.Length - 2, 2).Append(");\r\n");
+                        }
+                    }
+                }
+                if (istmpatler == false)
+                {
+                    sb.Append(sbalter);
+                    continue;
+                }
+                var oldpk = _orm.Ado.ExecuteScalar(CommandType.Text, _commonUtils.FormatSql(@"select pg_constraint.conname as pk_name from pg_constraint
+inner join pg_class on pg_constraint.conrelid = pg_class.oid
+inner join pg_namespace on pg_namespace.oid = pg_class.relnamespace
+where pg_namespace.nspname={0} and pg_class.relname={1} and pg_constraint.contype='p'
+", tbname))?.ToString();
+                if (string.IsNullOrEmpty(oldpk) == false)
+                    sb.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" DROP CONSTRAINT ").Append(oldpk).Append(";\r\n");
+
+                //创建临时表，数据导进临时表，然后删除原表，将临时表改名为原表名
+                var tablename = tboldname == null ? _commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}") : _commonUtils.QuoteSqlName($"{tboldname[0]}.{tboldname[1]}");
+                var tmptablename = _commonUtils.QuoteSqlName($"{tbname[0]}.FreeSqlTmp_{tbname[1]}");
+                //创建临时表
+                sb.Append("CREATE TABLE IF NOT EXISTS ").Append(tmptablename).Append(" ( ");
+                foreach (var tbcol in tb.ColumnsByPosition)
+                {
+                    sb.Append(" \r\n  ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ").Append(tbcol.Attribute.DbType).Append(",");
+                    if (tbcol.Attribute.IsIdentity == true) seqcols.Add((tbcol, tbname, true));
+                }
+                if (tb.Primarys.Any())
+                {
+                    sb.Append(" \r\n  CONSTRAINT ").Append(tbname[0]).Append("_").Append(tbname[1]).Append("_pkey PRIMARY KEY (");
+                    foreach (var tbcol in tb.Primarys) sb.Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(", ");
+                    sb.Remove(sb.Length - 2, 2).Append("),");
+                }
+                foreach (var uk in tb.Uniques)
+                {
+                    sb.Append(" \r\n  CONSTRAINT ").Append(_commonUtils.QuoteSqlName(uk.Key)).Append(" UNIQUE(");
+                    foreach (var tbcol in uk.Value) sb.Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(", ");
+                    sb.Remove(sb.Length - 2, 2).Append("),");
+                }
+                sb.Remove(sb.Length - 1, 1);
+                sb.Append("\r\n) WITH (OIDS=FALSE);\r\n");
+                //备注
+                foreach (var tbcol in tb.ColumnsByPosition)
+                {
+                    if (string.IsNullOrEmpty(tbcol.Comment) == false)
+                        sb.Append("COMMENT ON COLUMN ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.FreeSqlTmp_{tbname[1]}.{tbcol.Attribute.Name}")).Append(" IS ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment)).Append(";\r\n");
+                }
+                sb.Append("INSERT INTO ").Append(tmptablename).Append(" (");
+                foreach (var tbcol in tb.ColumnsByPosition)
+                    sb.Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(", ");
+                sb.Remove(sb.Length - 2, 2).Append(")\r\nSELECT ");
+                foreach (var tbcol in tb.ColumnsByPosition)
+                {
+                    var insertvalue = "NULL";
+                    if (tbstruct.TryGetValue(tbcol.Attribute.Name, out var tbstructcol) ||
+                        string.IsNullOrEmpty(tbcol.Attribute.OldName) == false && tbstruct.TryGetValue(tbcol.Attribute.OldName, out tbstructcol))
+                    {
+                        insertvalue = _commonUtils.QuoteSqlName(tbstructcol.column);
+                        if (tbcol.Attribute.DbType.StartsWith(tbstructcol.sqlType, StringComparison.CurrentCultureIgnoreCase) == false)
+                            insertvalue = $"cast({insertvalue} as {tbcol.Attribute.DbType.Split(' ').First()})";
+                        if (tbcol.Attribute.IsNullable != tbstructcol.is_nullable)
+                            insertvalue = $"coalesce({insertvalue},{_commonUtils.FormatSql("{0}", tbcol.Attribute.DbDefautValue)})";
+                    }
+                    else if (tbcol.Attribute.IsNullable == false)
+                        insertvalue = _commonUtils.FormatSql("{0}", tbcol.Attribute.DbDefautValue);
+                    sb.Append(insertvalue).Append(", ");
+                }
+                sb.Remove(sb.Length - 2, 2).Append(" FROM ").Append(tablename).Append(";\r\n");
+                sb.Append("DROP TABLE ").Append(tablename).Append(";\r\n");
+                sb.Append("ALTER TABLE ").Append(tmptablename).Append(" RENAME TO ").Append(_commonUtils.QuoteSqlName(tbname[1])).Append(";\r\n");
+            }
+            foreach (var seqcol in seqcols)
+            {
+                var tbname = seqcol.Item2;
+                var seqname = Utils.GetCsName($"{tbname[0]}.{tbname[1]}_{seqcol.Item1.Attribute.Name}_sequence_name");
+                var tbname2 = _commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}");
+                var colname2 = _commonUtils.QuoteSqlName(seqcol.Item1.Attribute.Name);
+                sb.Append("ALTER TABLE ").Append(tbname2).Append(" ALTER COLUMN ").Append(colname2).Append(" SET DEFAULT null;\r\n");
+                sb.Append("DROP SEQUENCE IF EXISTS ").Append(seqname).Append(";\r\n");
+                if (seqcol.Item3)
+                {
+                    sb.Append("CREATE SEQUENCE ").Append(seqname).Append(";\r\n");
+                    sb.Append("ALTER TABLE ").Append(tbname2).Append(" ALTER COLUMN ").Append(colname2).Append(" SET DEFAULT nextval('").Append(seqname).Append("'::regclass);\r\n");
+                    sb.Append(" SELECT case when max(").Append(colname2).Append(") is null then 0 else setval('").Append(seqname).Append("', max(").Append(colname2).Append(")) end FROM ").Append(tbname2).Append(";\r\n");
+                }
+            }
+            return sb.Length == 0 ? null : sb.ToString();
+        }
+    }
+}

Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLDbFirst.cs

@@ -0,0 +1,445 @@
+using FreeSql.DatabaseModel;
+using FreeSql.Internal;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Data.Odbc;
+using System.Linq;
+using System.Text.RegularExpressions;
+
+namespace FreeSql.Odbc.PostgreSQL
+{
+    class OdbcPostgreSQLDbFirst : IDbFirst
+    {
+        IFreeSql _orm;
+        protected CommonUtils _commonUtils;
+        protected CommonExpression _commonExpression;
+        public OdbcPostgreSQLDbFirst(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression)
+        {
+            _orm = orm;
+            _commonUtils = commonUtils;
+            _commonExpression = commonExpression;
+        }
+
+        public int GetDbType(DbColumnInfo column) => (int)GetOdbcType(column);
+        OdbcType GetOdbcType(DbColumnInfo column)
+        {
+            var dbtype = column.DbTypeText;
+            var isarray = dbtype.EndsWith("[]");
+            if (isarray) dbtype = dbtype.Remove(dbtype.Length - 2);
+            OdbcType ret = OdbcType.VarChar;
+            switch (dbtype.ToLower().TrimStart('_'))
+            {
+                case "int2": ret = OdbcType.SmallInt; break;
+                case "int4": ret = OdbcType.Int; break;
+                case "int8": ret = OdbcType.BigInt; break;
+                case "numeric": ret = OdbcType.Numeric; break;
+                case "float4": ret = OdbcType.Real; break;
+                case "float8": ret = OdbcType.Double; break;
+                case "money": ret = OdbcType.Numeric; break;
+
+                case "bpchar": ret = OdbcType.Char; break;
+                case "varchar": ret = OdbcType.VarChar; break;
+                case "text": ret = OdbcType.Text; break;
+
+                case "timestamp": ret = OdbcType.DateTime; break;
+                case "timestamptz": ret = OdbcType.DateTime; break;
+                case "date": ret = OdbcType.Date; break;
+                case "time": ret = OdbcType.Time; break;
+                case "timetz": ret = OdbcType.Time; break;
+                case "interval": ret = OdbcType.Time; break;
+
+                case "bool": ret = OdbcType.Bit; break;
+                case "bytea": ret = OdbcType.VarBinary; break;
+                case "bit": ret = OdbcType.Bit; break;
+                case "varbit": ret = OdbcType.VarBinary; break;
+
+                case "json": ret = OdbcType.VarChar; break;
+                case "jsonb": ret = OdbcType.VarChar; break;
+                case "uuid": ret = OdbcType.UniqueIdentifier; break;
+            }
+            return ret;
+        }
+
+        static readonly Dictionary<int, (string csConvert, string csParse, string csStringify, string csType, Type csTypeInfo, Type csNullableTypeInfo, string csTypeValue, string dataReaderMethod)> _dicDbToCs = new Dictionary<int, (string csConvert, string csParse, string csStringify, string csType, Type csTypeInfo, Type csNullableTypeInfo, string csTypeValue, string dataReaderMethod)>() {
+                { (int)OdbcType.SmallInt, ("(short?)", "short.Parse({0})", "{0}.ToString()", "short?", typeof(short), typeof(short?), "{0}.Value", "GetInt16") },
+                { (int)OdbcType.Int, ("(int?)", "int.Parse({0})", "{0}.ToString()", "int?", typeof(int), typeof(int?), "{0}.Value", "GetInt32") },
+                { (int)OdbcType.BigInt, ("(long?)", "long.Parse({0})", "{0}.ToString()", "long?", typeof(long), typeof(long?), "{0}.Value", "GetInt64") },
+                { (int)OdbcType.Numeric, ("(decimal?)", "decimal.Parse({0})", "{0}.ToString()", "decimal?", typeof(decimal), typeof(decimal?), "{0}.Value", "GetDecimal") },
+                { (int)OdbcType.Real, ("(float?)", "float.Parse({0})", "{0}.ToString()", "float?", typeof(float), typeof(float?), "{0}.Value", "GetFloat") },
+                { (int)OdbcType.Double, ("(double?)", "double.Parse({0})", "{0}.ToString()", "double?", typeof(double), typeof(double?), "{0}.Value", "GetDouble") },
+
+                { (int)OdbcType.Char, ("", "{0}.Replace(StringifySplit, \"|\")", "{0}.Replace(\"|\", StringifySplit)", "string", typeof(string), typeof(string), "{0}", "GetString") },
+                { (int)OdbcType.VarChar, ("", "{0}.Replace(StringifySplit, \"|\")", "{0}.Replace(\"|\", StringifySplit)", "string", typeof(string), typeof(string), "{0}", "GetString") },
+                { (int)OdbcType.Text, ("", "{0}.Replace(StringifySplit, \"|\")", "{0}.Replace(\"|\", StringifySplit)", "string", typeof(string), typeof(string), "{0}", "GetString") },
+
+                { (int)OdbcType.DateTime,  ("(DateTime?)", "new DateTime(long.Parse({0}))", "{0}.Ticks.ToString()", "DateTime?", typeof(DateTime), typeof(DateTime?), "{0}.Value", "GetDateTime") },
+                { (int)OdbcType.Date,  ("(DateTime?)", "new DateTime(long.Parse({0}))", "{0}.Ticks.ToString()", "DateTime?", typeof(DateTime), typeof(DateTime?), "{0}.Value", "GetDateTime") },
+                { (int)OdbcType.Time, ("(TimeSpan?)", "TimeSpan.Parse(double.Parse({0}))", "{0}.Ticks.ToString()", "TimeSpan?", typeof(TimeSpan), typeof(TimeSpan?), "{0}.Value", "GetValue") },
+
+                { (int)OdbcType.Bit, ("(bool?)", "{0} == \"1\"", "{0} == true ? \"1\" : \"0\"", "bool?", typeof(bool), typeof(bool?), "{0}.Value", "GetBoolean") },
+                { (int)OdbcType.VarBinary, ("(byte[])", "Convert.FromBase64String({0})", "Convert.ToBase64String({0})", "byte[]", typeof(byte[]), typeof(byte[]), "{0}", "GetValue") },
+
+                { (int)OdbcType.UniqueIdentifier, ("(Guid?)", "Guid.Parse({0})", "{0}.ToString()", "Guid", typeof(Guid), typeof(Guid?), "{0}", "GetString") },
+            };
+
+        public string GetCsConvert(DbColumnInfo column) => _dicDbToCs.TryGetValue(column.DbType, out var trydc) ? (column.IsNullable ? trydc.csConvert : trydc.csConvert.Replace("?", "")) : null;
+        public string GetCsParse(DbColumnInfo column) => _dicDbToCs.TryGetValue(column.DbType, out var trydc) ? trydc.csParse : null;
+        public string GetCsStringify(DbColumnInfo column) => _dicDbToCs.TryGetValue(column.DbType, out var trydc) ? trydc.csStringify : null;
+        public string GetCsType(DbColumnInfo column) => _dicDbToCs.TryGetValue(column.DbType, out var trydc) ? (column.IsNullable ? trydc.csType : trydc.csType.Replace("?", "")) : null;
+        public Type GetCsTypeInfo(DbColumnInfo column) => _dicDbToCs.TryGetValue(column.DbType, out var trydc) ? trydc.csTypeInfo : null;
+        public string GetCsTypeValue(DbColumnInfo column) => _dicDbToCs.TryGetValue(column.DbType, out var trydc) ? trydc.csTypeValue : null;
+        public string GetDataReaderMethod(DbColumnInfo column) => _dicDbToCs.TryGetValue(column.DbType, out var trydc) ? trydc.dataReaderMethod : null;
+
+        public List<string> GetDatabases()
+        {
+            var sql = @" select datname from pg_database where datname not in ('template1', 'template0')";
+            var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
+            return ds.Select(a => a.FirstOrDefault()?.ToString()).ToList();
+        }
+
+        public List<DbTableInfo> GetTablesByDatabase(params string[] database)
+        {
+            var olddatabase = "";
+            using (var conn = _orm.Ado.MasterPool.Get(TimeSpan.FromSeconds(5)))
+            {
+                olddatabase = conn.Value.Database;
+            }
+            var dbs = database == null || database.Any() == false ? new[] { olddatabase } : database;
+            var tables = new List<DbTableInfo>();
+
+            foreach (var db in dbs)
+            {
+                if (string.IsNullOrEmpty(db) || string.Compare(db, olddatabase, true) != 0) continue;
+
+                var loc1 = new List<DbTableInfo>();
+                var loc2 = new Dictionary<string, DbTableInfo>();
+                var loc3 = new Dictionary<string, Dictionary<string, DbColumnInfo>>();
+
+                var sql = $@"
+select
+b.nspname || '.' || a.tablename,
+a.schemaname,
+a.tablename ,
+d.description,
+'TABLE'
+from pg_tables a
+inner join pg_namespace b on b.nspname = a.schemaname
+inner join pg_class c on c.relnamespace = b.oid and c.relname = a.tablename
+left join pg_description d on d.objoid = c.oid and objsubid = 0
+where a.schemaname not in ('pg_catalog', 'information_schema', 'topology')
+and b.nspname || '.' || a.tablename not in ('public.spatial_ref_sys')
+
+union all
+
+select
+b.nspname || '.' || a.relname,
+b.nspname,
+a.relname,
+d.description,
+'VIEW'
+from pg_class a
+inner join pg_namespace b on b.oid = a.relnamespace
+left join pg_description d on d.objoid = a.oid and objsubid = 0
+where b.nspname not in ('pg_catalog', 'information_schema') and a.relkind in ('m','v') 
+and b.nspname || '.' || a.relname not in ('public.geography_columns','public.geometry_columns','public.raster_columns','public.raster_overviews')
+";
+                var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
+                if (ds == null) return loc1;
+
+                var loc6 = new List<string>();
+                var loc66 = new List<string>();
+                foreach (object[] row in ds)
+                {
+                    var object_id = string.Concat(row[0]);
+                    var owner = string.Concat(row[1]);
+                    var table = string.Concat(row[2]);
+                    var comment = string.Concat(row[3]);
+                    Enum.TryParse<DbTableType>(string.Concat(row[4]), out var type);
+                    loc2.Add(object_id, new DbTableInfo { Id = object_id.ToString(), Schema = owner, Name = table, Comment = comment, Type = type });
+                    loc3.Add(object_id, new Dictionary<string, DbColumnInfo>());
+                    switch (type)
+                    {
+                        case DbTableType.VIEW:
+                        case DbTableType.TABLE:
+                            loc6.Add(object_id);
+                            break;
+                        case DbTableType.StoreProcedure:
+                            loc66.Add(object_id);
+                            break;
+                    }
+                }
+                if (loc6.Count == 0) return loc1;
+                string loc8 = "'" + string.Join("','", loc6.ToArray()) + "'";
+                string loc88 = "'" + string.Join("','", loc66.ToArray()) + "'";
+
+                sql = $@"
+select
+ns.nspname || '.' || c.relname as id, 
+a.attname,
+t.typname,
+case when a.atttypmod > 0 and a.atttypmod < 32767 then a.atttypmod - 4 else a.attlen end len,
+case when t.typelem = 0 then t.typname else t2.typname end,
+case when a.attnotnull then 0 else 1 end as is_nullable,
+e.adsrc as is_identity,
+--case when e.adsrc = 'nextval(''' || case when ns.nspname = 'public' then '' else ns.nspname || '.' end || c.relname || '_' || a.attname || '_seq''::regclass)' then 1 else 0 end as is_identity,
+d.description as comment,
+a.attndims,
+case when t.typelem = 0 then t.typtype else t2.typtype end,
+ns2.nspname,
+a.attnum
+from pg_class c
+inner join pg_attribute a on a.attnum > 0 and a.attrelid = c.oid
+inner join pg_type t on t.oid = a.atttypid
+left join pg_type t2 on t2.oid = t.typelem
+left join pg_description d on d.objoid = a.attrelid and d.objsubid = a.attnum
+left join pg_attrdef e on e.adrelid = a.attrelid and e.adnum = a.attnum
+inner join pg_namespace ns on ns.oid = c.relnamespace
+inner join pg_namespace ns2 on ns2.oid = t.typnamespace
+where ns.nspname || '.' || c.relname in ({loc8})";
+                ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
+                if (ds == null) return loc1;
+
+                foreach (object[] row in ds)
+                {
+                    var object_id = string.Concat(row[0]);
+                    var column = string.Concat(row[1]);
+                    var type = string.Concat(row[2]);
+                    var max_length = int.Parse(string.Concat(row[3]));
+                    var sqlType = string.Concat(row[4]);
+                    var is_nullable = string.Concat(row[5]) == "1";
+                    var is_identity = string.Concat(row[6]).StartsWith(@"nextval('") && string.Concat(row[6]).EndsWith(@"'::regclass)");
+                    var comment = string.Concat(row[7]);
+                    int attndims = int.Parse(string.Concat(row[8]));
+                    string typtype = string.Concat(row[9]);
+                    string owner = string.Concat(row[10]);
+                    int attnum = int.Parse(string.Concat(row[11]));
+                    switch (sqlType.ToLower())
+                    {
+                        case "bool": case "name": case "bit": case "varbit": case "bpchar": case "varchar": case "bytea": case "text": case "uuid": break;
+                        default: max_length *= 8; break;
+                    }
+                    if (max_length <= 0) max_length = -1;
+                    if (type.StartsWith("_"))
+                    {
+                        type = type.Substring(1);
+                        if (attndims == 0) attndims++;
+                    }
+                    if (sqlType.StartsWith("_")) sqlType = sqlType.Substring(1);
+
+                    loc3[object_id].Add(column, new DbColumnInfo
+                    {
+                        Name = column,
+                        MaxLength = max_length,
+                        IsIdentity = is_identity,
+                        IsNullable = is_nullable,
+                        IsPrimary = false,
+                        DbTypeText = type,
+                        DbTypeTextFull = sqlType,
+                        Table = loc2[object_id],
+                        Coment = comment
+                    });
+                    loc3[object_id][column].DbType = this.GetDbType(loc3[object_id][column]);
+                    loc3[object_id][column].CsType = this.GetCsTypeInfo(loc3[object_id][column]);
+                }
+
+                sql = $@"
+select
+ns.nspname || '.' || d.relname as table_id, 
+c.attname,
+b.relname as index_id,
+case when a.indisunique then 1 else 0 end IsUnique,
+case when a.indisprimary then 1 else 0 end IsPrimary,
+case when a.indisclustered then 0 else 1 end IsClustered,
+0 IsDesc,
+a.indkey::text,
+c.attnum
+from pg_index a
+inner join pg_class b on b.oid = a.indexrelid
+inner join pg_attribute c on c.attnum > 0 and c.attrelid = b.oid
+inner join pg_namespace ns on ns.oid = b.relnamespace
+inner join pg_class d on d.oid = a.indrelid
+where ns.nspname || '.' || d.relname in ({loc8})
+";
+                ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
+                if (ds == null) return loc1;
+
+                var indexColumns = new Dictionary<string, Dictionary<string, List<DbColumnInfo>>>();
+                var uniqueColumns = new Dictionary<string, Dictionary<string, List<DbColumnInfo>>>();
+                foreach (object[] row in ds)
+                {
+                    var object_id = string.Concat(row[0]);
+                    var column = string.Concat(row[1]);
+                    var index_id = string.Concat(row[2]);
+                    var is_unique = string.Concat(row[3]) == "1";
+                    var is_primary_key = string.Concat(row[4]) == "1";
+                    var is_clustered = string.Concat(row[5]) == "1";
+                    var is_desc = int.Parse(string.Concat(row[6]));
+                    var inkey = string.Concat(row[7]).Split(' ');
+                    var attnum = int.Parse(string.Concat(row[8]));
+                    attnum = int.Parse(inkey[attnum - 1]);
+                    foreach (string tc in loc3[object_id].Keys)
+                    {
+                        if (loc3[object_id][tc].DbTypeText.EndsWith("[]"))
+                        {
+                            column = tc;
+                            break;
+                        }
+                    }
+                    if (loc3.ContainsKey(object_id) == false || loc3[object_id].ContainsKey(column) == false) continue;
+                    var loc9 = loc3[object_id][column];
+                    if (loc9.IsPrimary == false && is_primary_key) loc9.IsPrimary = is_primary_key;
+
+                    Dictionary<string, List<DbColumnInfo>> loc10 = null;
+                    List<DbColumnInfo> loc11 = null;
+                    if (!indexColumns.TryGetValue(object_id, out loc10))
+                        indexColumns.Add(object_id, loc10 = new Dictionary<string, List<DbColumnInfo>>());
+                    if (!loc10.TryGetValue(index_id, out loc11))
+                        loc10.Add(index_id, loc11 = new List<DbColumnInfo>());
+                    loc11.Add(loc9);
+                    if (is_unique && !is_primary_key)
+                    {
+                        if (!uniqueColumns.TryGetValue(object_id, out loc10))
+                            uniqueColumns.Add(object_id, loc10 = new Dictionary<string, List<DbColumnInfo>>());
+                        if (!loc10.TryGetValue(index_id, out loc11))
+                            loc10.Add(index_id, loc11 = new List<DbColumnInfo>());
+                        loc11.Add(loc9);
+                    }
+                }
+                foreach (var object_id in indexColumns.Keys)
+                {
+                    foreach (var column in indexColumns[object_id])
+                        loc2[object_id].IndexesDict.Add(column.Key, column.Value);
+                }
+                foreach (var object_id in uniqueColumns.Keys)
+                {
+                    foreach (var column in uniqueColumns[object_id])
+                    {
+                        column.Value.Sort((c1, c2) => c1.Name.CompareTo(c2.Name));
+                        loc2[object_id].UniquesDict.Add(column.Key, column.Value);
+                    }
+                }
+
+                sql = $@"
+select
+ns.nspname || '.' || b.relname as table_id, 
+array(select attname from pg_attribute where attrelid = a.conrelid and attnum = any(a.conkey)) as column_name,
+a.conname as FKId,
+ns2.nspname || '.' || c.relname as ref_table_id, 
+1 as IsForeignKey,
+array(select attname from pg_attribute where attrelid = a.confrelid and attnum = any(a.confkey)) as ref_column,
+null ref_sln,
+null ref_table
+from  pg_constraint a
+inner join pg_class b on b.oid = a.conrelid
+inner join pg_class c on c.oid = a.confrelid
+inner join pg_namespace ns on ns.oid = b.relnamespace
+inner join pg_namespace ns2 on ns2.oid = c.relnamespace
+where ns.nspname || '.' || b.relname in ({loc8})
+";
+                ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
+                if (ds == null) return loc1;
+
+                var fkColumns = new Dictionary<string, Dictionary<string, DbForeignInfo>>();
+                foreach (object[] row in ds)
+                {
+                    var table_id = string.Concat(row[0]);
+                    var column = row[1] as string[];
+                    var fk_id = string.Concat(row[2]);
+                    var ref_table_id = string.Concat(row[3]);
+                    var is_foreign_key = string.Concat(row[4]) == "1";
+                    var referenced_column = row[5] as string[];
+                    var referenced_db = string.Concat(row[6]);
+                    var referenced_table = string.Concat(row[7]);
+
+                    if (loc2.ContainsKey(ref_table_id) == false) continue;
+
+                    Dictionary<string, DbForeignInfo> loc12 = null;
+                    DbForeignInfo loc13 = null;
+                    if (!fkColumns.TryGetValue(table_id, out loc12))
+                        fkColumns.Add(table_id, loc12 = new Dictionary<string, DbForeignInfo>());
+                    if (!loc12.TryGetValue(fk_id, out loc13))
+                        loc12.Add(fk_id, loc13 = new DbForeignInfo { Table = loc2[table_id], ReferencedTable = loc2[ref_table_id] });
+
+                    for (int a = 0; a < column.Length; a++)
+                    {
+                        loc13.Columns.Add(loc3[table_id][column[a]]);
+                        loc13.ReferencedColumns.Add(loc3[ref_table_id][referenced_column[a]]);
+                    }
+                }
+                foreach (var table_id in fkColumns.Keys)
+                    foreach (var fk in fkColumns[table_id])
+                        loc2[table_id].ForeignsDict.Add(fk.Key, fk.Value);
+
+                foreach (var table_id in loc3.Keys)
+                {
+                    foreach (var loc5 in loc3[table_id].Values)
+                    {
+                        loc2[table_id].Columns.Add(loc5);
+                        if (loc5.IsIdentity) loc2[table_id].Identitys.Add(loc5);
+                        if (loc5.IsPrimary) loc2[table_id].Primarys.Add(loc5);
+                    }
+                }
+                foreach (var loc4 in loc2.Values)
+                {
+                    if (loc4.Primarys.Count == 0 && loc4.UniquesDict.Count > 0)
+                    {
+                        foreach (var loc5 in loc4.UniquesDict.First().Value)
+                        {
+                            loc5.IsPrimary = true;
+                            loc4.Primarys.Add(loc5);
+                        }
+                    }
+                    loc4.Primarys.Sort((c1, c2) => c1.Name.CompareTo(c2.Name));
+                    loc4.Columns.Sort((c1, c2) =>
+                    {
+                        int compare = c2.IsPrimary.CompareTo(c1.IsPrimary);
+                        if (compare == 0)
+                        {
+                            bool b1 = loc4.ForeignsDict.Values.Where(fk => fk.Columns.Where(c3 => c3.Name == c1.Name).Any()).Any();
+                            bool b2 = loc4.ForeignsDict.Values.Where(fk => fk.Columns.Where(c3 => c3.Name == c2.Name).Any()).Any();
+                            compare = b2.CompareTo(b1);
+                        }
+                        if (compare == 0) compare = c1.Name.CompareTo(c2.Name);
+                        return compare;
+                    });
+                    loc1.Add(loc4);
+                }
+                loc1.Sort((t1, t2) =>
+                {
+                    var ret = t1.Schema.CompareTo(t2.Schema);
+                    if (ret == 0) ret = t1.Name.CompareTo(t2.Name);
+                    return ret;
+                });
+
+                loc2.Clear();
+                loc3.Clear();
+                tables.AddRange(loc1);
+            }
+            return tables;
+        }
+
+        public List<DbEnumInfo> GetEnumsByDatabase(params string[] database)
+        {
+            if (database == null || database.Length == 0) return new List<DbEnumInfo>();
+            var drs = _orm.Ado.Query<(string name, string label)>(CommandType.Text, _commonUtils.FormatSql(@"
+select
+ns.nspname || '.' || a.typname,
+b.enumlabel
+from pg_type a
+inner join pg_enum b on b.enumtypid = a.oid
+inner join pg_namespace ns on ns.oid = a.typnamespace
+where a.typtype = 'e' and ns.nspname in (SELECT ""schema_name"" FROM information_schema.schemata where catalog_name in {0})", database));
+            var ret = new Dictionary<string, Dictionary<string, string>>();
+            foreach (var dr in drs)
+            {
+                if (ret.TryGetValue(dr.name, out var labels) == false) ret.Add(dr.name, labels = new Dictionary<string, string>());
+                var key = dr.label;
+                if (Regex.IsMatch(key, @"^[\u0391-\uFFE5a-zA-Z_\$][\u0391-\uFFE5a-zA-Z_\$\d]*$") == false)
+                    key = $"Unkown{ret[dr.name].Count + 1}";
+                if (labels.ContainsKey(key) == false) labels.Add(key, dr.label);
+            }
+            return ret.Select(a => new DbEnumInfo { Name = a.Key, Labels = a.Value }).ToList();
+        }
+    }
+}

Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLExpression.cs

@@ -0,0 +1,538 @@
+using FreeSql.Internal;
+using FreeSql.Internal.Model;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+
+namespace FreeSql.Odbc.PostgreSQL
+{
+    class OdbcPostgreSQLExpression : CommonExpression
+    {
+
+        public OdbcPostgreSQLExpression(CommonUtils common) : base(common) { }
+
+        public override string ExpressionLambdaToSqlOther(Expression exp, ExpTSC tsc)
+        {
+            Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
+            switch (exp.NodeType)
+            {
+                case ExpressionType.Convert:
+                    var operandExp = (exp as UnaryExpression)?.Operand;
+                    var gentype = exp.Type.NullableTypeOrThis();
+                    if (gentype != operandExp.Type.NullableTypeOrThis())
+                    {
+                        switch (exp.Type.NullableTypeOrThis().ToString())
+                        {
+                            case "System.Boolean": return $"(({getExp(operandExp)})::varchar not in ('0','false','f','no'))";
+                            case "System.Byte": return $"({getExp(operandExp)})::int2";
+                            case "System.Char": return $"substr(({getExp(operandExp)})::char, 1, 1)";
+                            case "System.DateTime": return $"({getExp(operandExp)})::timestamp";
+                            case "System.Decimal": return $"({getExp(operandExp)})::numeric";
+                            case "System.Double": return $"({getExp(operandExp)})::float8";
+                            case "System.Int16": return $"({getExp(operandExp)})::int2";
+                            case "System.Int32": return $"({getExp(operandExp)})::int4";
+                            case "System.Int64": return $"({getExp(operandExp)})::int8";
+                            case "System.SByte": return $"({getExp(operandExp)})::int2";
+                            case "System.Single": return $"({getExp(operandExp)})::float4";
+                            case "System.String": return $"({getExp(operandExp)})::varchar";
+                            case "System.UInt16": return $"({getExp(operandExp)})::int2";
+                            case "System.UInt32": return $"({getExp(operandExp)})::int4";
+                            case "System.UInt64": return $"({getExp(operandExp)})::int8";
+                            case "System.Guid": return $"({getExp(operandExp)})::uuid";
+                        }
+                    }
+                    break;
+                case ExpressionType.ArrayLength:
+                    var arrOperExp = getExp((exp as UnaryExpression).Operand);
+                    if (arrOperExp.StartsWith("(") || arrOperExp.EndsWith(")")) return $"array_length(array[{arrOperExp.TrimStart('(').TrimEnd(')')}],1)";
+                    return $"case when {arrOperExp} is null then 0 else array_length({arrOperExp},1) end";
+                case ExpressionType.Call:
+                    var callExp = exp as MethodCallExpression;
+
+                    switch (callExp.Method.Name)
+                    {
+                        case "Parse":
+                        case "TryParse":
+                            switch (callExp.Method.DeclaringType.NullableTypeOrThis().ToString())
+                            {
+                                case "System.Boolean": return $"(({getExp(callExp.Arguments[0])})::varchar not in ('0','false','f','no'))";
+                                case "System.Byte": return $"({getExp(callExp.Arguments[0])})::int2";
+                                case "System.Char": return $"substr(({getExp(callExp.Arguments[0])})::char, 1, 1)";
+                                case "System.DateTime": return $"({getExp(callExp.Arguments[0])})::timestamp";
+                                case "System.Decimal": return $"({getExp(callExp.Arguments[0])})::numeric";
+                                case "System.Double": return $"({getExp(callExp.Arguments[0])})::float8";
+                                case "System.Int16": return $"({getExp(callExp.Arguments[0])})::int2";
+                                case "System.Int32": return $"({getExp(callExp.Arguments[0])})::int4";
+                                case "System.Int64": return $"({getExp(callExp.Arguments[0])})::int8";
+                                case "System.SByte": return $"({getExp(callExp.Arguments[0])})::int2";
+                                case "System.Single": return $"({getExp(callExp.Arguments[0])})::float4";
+                                case "System.UInt16": return $"({getExp(callExp.Arguments[0])})::int2";
+                                case "System.UInt32": return $"({getExp(callExp.Arguments[0])})::int4";
+                                case "System.UInt64": return $"({getExp(callExp.Arguments[0])})::int8";
+                                case "System.Guid": return $"({getExp(callExp.Arguments[0])})::uuid";
+                            }
+                            break;
+                        case "NewGuid":
+                            break;
+                        case "Next":
+                            if (callExp.Object?.Type == typeof(Random)) return "(random()*1000000000)::int4";
+                            break;
+                        case "NextDouble":
+                            if (callExp.Object?.Type == typeof(Random)) return "random()";
+                            break;
+                        case "Random":
+                            if (callExp.Method.DeclaringType.IsNumberType()) return "random()";
+                            break;
+                        case "ToString":
+                            if (callExp.Object != null) return callExp.Arguments.Count == 0 ? $"({getExp(callExp.Object)})::varchar" : null;
+                            break;
+                    }
+
+                    var objExp = callExp.Object;
+                    var objType = objExp?.Type;
+                    if (objType?.FullName == "System.Byte[]") return null;
+
+                    var argIndex = 0;
+                    if (objType == null && callExp.Method.DeclaringType == typeof(Enumerable))
+                    {
+                        objExp = callExp.Arguments.FirstOrDefault();
+                        objType = objExp?.Type;
+                        argIndex++;
+                    }
+                    if (objType == null) objType = callExp.Method.DeclaringType;
+                    if (objType != null || objType.IsArray || typeof(IList).IsAssignableFrom(callExp.Method.DeclaringType))
+                    {
+                        var left = objExp == null ? null : getExp(objExp);
+                        if (objType.FullName == typeof(Dictionary<string, string>).FullName)
+                        {
+                            switch (callExp.Method.Name)
+                            {
+                                case "Contains":
+                                    var right = getExp(callExp.Arguments[argIndex]);
+                                    return $"({left} @> ({right}))";
+                                case "ContainsKey": return $"({left} ? {getExp(callExp.Arguments[argIndex])})";
+                                case "Concat": return $"({left} || {getExp(callExp.Arguments[argIndex])})";
+                                case "GetLength":
+                                case "GetLongLength":
+                                case "Count": return $"case when {left} is null then 0 else array_length(akeys({left}),1) end";
+                                case "Keys": return $"akeys({left})";
+                                case "Values": return $"avals({left})";
+                            }
+                        }
+                        switch (callExp.Method.Name)
+                        {
+                            case "Any":
+                                if (left.StartsWith("(") || left.EndsWith(")")) left = $"array[{left.TrimStart('(').TrimEnd(')')}]";
+                                return $"(case when {left} is null then 0 else array_length({left},1) end > 0)";
+                            case "Contains":
+                                //判断 in 或 array @> array
+                                var right1 = getExp(callExp.Arguments[argIndex]);
+                                if (left.StartsWith("array[") || left.EndsWith("]"))
+                                    return $"{right1} in ({left.Substring(6, left.Length - 7)})";
+                                if (left.StartsWith("(") || left.EndsWith(")"))
+                                    return $"{right1} in {left}";
+                                if (right1.StartsWith("(") || right1.EndsWith(")")) right1 = $"array[{right1.TrimStart('(').TrimEnd(')')}]";
+                                return $"({left} @> array[{right1}])";
+                            case "Concat":
+                                if (left.StartsWith("(") || left.EndsWith(")")) left = $"array[{left.TrimStart('(').TrimEnd(')')}]";
+                                var right2 = getExp(callExp.Arguments[argIndex]);
+                                if (right2.StartsWith("(") || right2.EndsWith(")")) right2 = $"array[{right2.TrimStart('(').TrimEnd(')')}]";
+                                return $"({left} || {right2})";
+                            case "GetLength":
+                            case "GetLongLength":
+                            case "Length":
+                            case "Count":
+                                if (left.StartsWith("(") || left.EndsWith(")")) left = $"array[{left.TrimStart('(').TrimEnd(')')}]";
+                                return $"case when {left} is null then 0 else array_length({left},1) end";
+                        }
+                    }
+                    break;
+                case ExpressionType.MemberAccess:
+                    var memExp = exp as MemberExpression;
+                    var memParentExp = memExp.Expression?.Type;
+                    if (memParentExp?.FullName == "System.Byte[]") return null;
+                    if (memParentExp != null)
+                    {
+                        if (memParentExp.IsArray == true)
+                        {
+                            var left = getExp(memExp.Expression);
+                            if (left.StartsWith("(") || left.EndsWith(")")) left = $"array[{left.TrimStart('(').TrimEnd(')')}]";
+                            switch (memExp.Member.Name)
+                            {
+                                case "Length":
+                                case "Count": return $"case when {left} is null then 0 else array_length({left},1) end";
+                            }
+                        }
+                        switch (memParentExp.FullName)
+                        {
+                            case "Newtonsoft.Json.Linq.JToken":
+                            case "Newtonsoft.Json.Linq.JObject":
+                            case "Newtonsoft.Json.Linq.JArray":
+                                var left = getExp(memExp.Expression);
+                                switch (memExp.Member.Name)
+                                {
+                                    case "Count": return $"jsonb_array_length(coalesce({left},'[]'))";
+                                }
+                                break;
+                        }
+                        if (memParentExp.FullName == typeof(Dictionary<string, string>).FullName)
+                        {
+                            var left = getExp(memExp.Expression);
+                            switch (memExp.Member.Name)
+                            {
+                                case "Count": return $"case when {left} is null then 0 else array_length(akeys({left}),1) end";
+                                case "Keys": return $"akeys({left})";
+                                case "Values": return $"avals({left})";
+                            }
+                        }
+                    }
+                    break;
+                case ExpressionType.NewArrayInit:
+                    var arrExp = exp as NewArrayExpression;
+                    var arrSb = new StringBuilder();
+                    arrSb.Append("array[");
+                    for (var a = 0; a < arrExp.Expressions.Count; a++)
+                    {
+                        if (a > 0) arrSb.Append(",");
+                        arrSb.Append(getExp(arrExp.Expressions[a]));
+                    }
+                    if (arrSb.Length == 1) arrSb.Append("NULL");
+                    return arrSb.Append("]").ToString();
+                case ExpressionType.ListInit:
+                    var listExp = exp as ListInitExpression;
+                    var listSb = new StringBuilder();
+                    listSb.Append("(");
+                    for (var a = 0; a < listExp.Initializers.Count; a++)
+                    {
+                        if (listExp.Initializers[a].Arguments.Any() == false) continue;
+                        if (a > 0) listSb.Append(",");
+                        listSb.Append(getExp(listExp.Initializers[a].Arguments.FirstOrDefault()));
+                    }
+                    if (listSb.Length == 1) listSb.Append("NULL");
+                    return listSb.Append(")").ToString();
+                case ExpressionType.New:
+                    var newExp = exp as NewExpression;
+                    if (typeof(IList).IsAssignableFrom(newExp.Type))
+                    {
+                        if (newExp.Arguments.Count == 0) return "(NULL)";
+                        if (typeof(IEnumerable).IsAssignableFrom(newExp.Arguments[0].Type) == false) return "(NULL)";
+                        return getExp(newExp.Arguments[0]);
+                    }
+                    return null;
+            }
+            return null;
+        }
+
+        public override string ExpressionLambdaToSqlMemberAccessString(MemberExpression exp, ExpTSC tsc)
+        {
+            if (exp.Expression == null)
+            {
+                switch (exp.Member.Name)
+                {
+                    case "Empty": return "''";
+                }
+                return null;
+            }
+            var left = ExpressionLambdaToSql(exp.Expression, tsc);
+            switch (exp.Member.Name)
+            {
+                case "Length": return $"char_length({left})";
+            }
+            return null;
+        }
+        public override string ExpressionLambdaToSqlMemberAccessDateTime(MemberExpression exp, ExpTSC tsc)
+        {
+            if (exp.Expression == null)
+            {
+                switch (exp.Member.Name)
+                {
+                    case "Now": return "current_timestamp";
+                    case "UtcNow": return "(current_timestamp at time zone 'UTC')";
+                    case "Today": return "current_date";
+                    case "MinValue": return "'0001/1/1 0:00:00'::timestamp";
+                    case "MaxValue": return "'9999/12/31 23:59:59'::timestamp";
+                }
+                return null;
+            }
+            var left = ExpressionLambdaToSql(exp.Expression, tsc);
+            switch (exp.Member.Name)
+            {
+                case "Date": return $"({left})::date";
+                case "TimeOfDay": return $"(extract(epoch from ({left})::time)*1000000)";
+                case "DayOfWeek": return $"extract(dow from ({left})::timestamp)";
+                case "Day": return $"extract(day from ({left})::timestamp)";
+                case "DayOfYear": return $"extract(doy from ({left})::timestamp)";
+                case "Month": return $"extract(month from ({left})::timestamp)";
+                case "Year": return $"extract(year from ({left})::timestamp)";
+                case "Hour": return $"extract(hour from ({left})::timestamp)";
+                case "Minute": return $"extract(minute from ({left})::timestamp)";
+                case "Second": return $"extract(second from ({left})::timestamp)";
+                case "Millisecond": return $"(extract(milliseconds from ({left})::timestamp)-extract(second from ({left})::timestamp)*1000)";
+                case "Ticks": return $"(extract(epoch from ({left})::timestamp)*10000000+621355968000000000)";
+            }
+            return null;
+        }
+        public override string ExpressionLambdaToSqlMemberAccessTimeSpan(MemberExpression exp, ExpTSC tsc)
+        {
+            if (exp.Expression == null)
+            {
+                switch (exp.Member.Name)
+                {
+                    case "Zero": return "0";
+                    case "MinValue": return "-922337203685477580"; //微秒 Ticks / 10
+                    case "MaxValue": return "922337203685477580";
+                }
+                return null;
+            }
+            var left = ExpressionLambdaToSql(exp.Expression, tsc);
+            switch (exp.Member.Name)
+            {
+                case "Days": return $"floor(({left})/{(long)1000000 * 60 * 60 * 24})";
+                case "Hours": return $"floor(({left})/{(long)1000000 * 60 * 60}%24)";
+                case "Milliseconds": return $"(floor(({left})/1000)::int8%1000)";
+                case "Minutes": return $"(floor(({left})/{(long)1000000 * 60})::int8%60)";
+                case "Seconds": return $"(floor(({left})/1000000)::int8%60)";
+                case "Ticks": return $"(({left})*10)";
+                case "TotalDays": return $"(({left})/{(long)1000000 * 60 * 60 * 24})";
+                case "TotalHours": return $"(({left})/{(long)1000000 * 60 * 60})";
+                case "TotalMilliseconds": return $"(({left})/1000)";
+                case "TotalMinutes": return $"(({left})/{(long)1000000 * 60})";
+                case "TotalSeconds": return $"(({left})/1000000)";
+            }
+            return null;
+        }
+
+        public override string ExpressionLambdaToSqlCallString(MethodCallExpression exp, ExpTSC tsc)
+        {
+            Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
+            if (exp.Object == null)
+            {
+                switch (exp.Method.Name)
+                {
+                    case "IsNullOrEmpty":
+                        var arg1 = getExp(exp.Arguments[0]);
+                        return $"({arg1} is null or {arg1} = '')";
+                    case "IsNullOrWhiteSpace":
+                        var arg2 = getExp(exp.Arguments[0]);
+                        return $"({arg2} is null or {arg2} = '' or ltrim({arg2}) = '')";
+                    case "Concat":
+                        return _common.StringConcat(exp.Arguments.Select(a => getExp(a)).ToArray(), null);
+                }
+            }
+            else
+            {
+                var left = getExp(exp.Object);
+                switch (exp.Method.Name)
+                {
+                    case "StartsWith":
+                    case "EndsWith":
+                    case "Contains":
+                        var args0Value = getExp(exp.Arguments[0]);
+                        if (args0Value == "NULL") return $"({left}) IS NULL";
+                        var likeOpt = "LIKE";
+                        if (exp.Arguments.Count > 1)
+                        {
+                            if (exp.Arguments[1].Type == typeof(bool) ||
+                                exp.Arguments[1].Type == typeof(StringComparison) && getExp(exp.Arguments[0]).Contains("IgnoreCase")) likeOpt = "ILIKE";
+                        }
+                        if (exp.Method.Name == "StartsWith") return $"({left}) {likeOpt} {(args0Value.EndsWith("'") ? args0Value.Insert(args0Value.Length - 1, "%") : $"(({args0Value})::varchar || '%')")}";
+                        if (exp.Method.Name == "EndsWith") return $"({left}) {likeOpt} {(args0Value.StartsWith("'") ? args0Value.Insert(1, "%") : $"('%' || ({args0Value})::varchar)")}";
+                        if (args0Value.StartsWith("'") && args0Value.EndsWith("'")) return $"({left}) {likeOpt} {args0Value.Insert(1, "%").Insert(args0Value.Length, "%")}";
+                        return $"({left}) {likeOpt} ('%' || ({args0Value})::varchar || '%')";
+                    case "ToLower": return $"lower({left})";
+                    case "ToUpper": return $"upper({left})";
+                    case "Substring":
+                        var substrArgs1 = getExp(exp.Arguments[0]);
+                        if (long.TryParse(substrArgs1, out var testtrylng1)) substrArgs1 = (testtrylng1 + 1).ToString();
+                        else substrArgs1 += "+1";
+                        if (exp.Arguments.Count == 1) return $"substr({left}, {substrArgs1})";
+                        return $"substr({left}, {substrArgs1}, {getExp(exp.Arguments[1])})";
+                    case "IndexOf": return $"(strpos({left}, {getExp(exp.Arguments[0])})-1)";
+                    case "PadLeft":
+                        if (exp.Arguments.Count == 1) return $"lpad({left}, {getExp(exp.Arguments[0])})";
+                        return $"lpad({left}, {getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
+                    case "PadRight":
+                        if (exp.Arguments.Count == 1) return $"rpad({left}, {getExp(exp.Arguments[0])})";
+                        return $"rpad({left}, {getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
+                    case "Trim":
+                    case "TrimStart":
+                    case "TrimEnd":
+                        if (exp.Arguments.Count == 0)
+                        {
+                            if (exp.Method.Name == "Trim") return $"trim({left})";
+                            if (exp.Method.Name == "TrimStart") return $"ltrim({left})";
+                            if (exp.Method.Name == "TrimEnd") return $"rtrim({left})";
+                        }
+                        var trimArg1 = "";
+                        var trimArg2 = "";
+                        foreach (var argsTrim02 in exp.Arguments)
+                        {
+                            var argsTrim01s = new[] { argsTrim02 };
+                            if (argsTrim02.NodeType == ExpressionType.NewArrayInit)
+                            {
+                                var arritem = argsTrim02 as NewArrayExpression;
+                                argsTrim01s = arritem.Expressions.ToArray();
+                            }
+                            foreach (var argsTrim01 in argsTrim01s)
+                            {
+                                var trimChr = getExp(argsTrim01).Trim('\'');
+                                if (trimChr.Length == 1) trimArg1 += trimChr;
+                                else trimArg2 += $" || ({trimChr})";
+                            }
+                        }
+                        if (exp.Method.Name == "Trim") left = $"trim({left}, {_common.FormatSql("{0}", trimArg1)}{trimArg2})";
+                        if (exp.Method.Name == "TrimStart") left = $"ltrim({left}, {_common.FormatSql("{0}", trimArg1)}{trimArg2})";
+                        if (exp.Method.Name == "TrimEnd") left = $"rtrim({left}, {_common.FormatSql("{0}", trimArg1)}{trimArg2})";
+                        return left;
+                    case "Replace": return $"replace({left}, {getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
+                    case "CompareTo": return $"case when {left} = {getExp(exp.Arguments[0])} then 0 when {left} > {getExp(exp.Arguments[0])} then 1 else -1 end";
+                    case "Equals": return $"({left} = ({getExp(exp.Arguments[0])})::varchar)";
+                }
+            }
+            return null;
+        }
+        public override string ExpressionLambdaToSqlCallMath(MethodCallExpression exp, ExpTSC tsc)
+        {
+            Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
+            switch (exp.Method.Name)
+            {
+                case "Abs": return $"abs({getExp(exp.Arguments[0])})";
+                case "Sign": return $"sign({getExp(exp.Arguments[0])})";
+                case "Floor": return $"floor({getExp(exp.Arguments[0])})";
+                case "Ceiling": return $"ceiling({getExp(exp.Arguments[0])})";
+                case "Round":
+                    if (exp.Arguments.Count > 1 && exp.Arguments[1].Type.FullName == "System.Int32") return $"round({getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
+                    return $"round({getExp(exp.Arguments[0])})";
+                case "Exp": return $"exp({getExp(exp.Arguments[0])})";
+                case "Log": return $"log({getExp(exp.Arguments[0])})";
+                case "Log10": return $"log10({getExp(exp.Arguments[0])})";
+                case "Pow": return $"pow({getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
+                case "Sqrt": return $"sqrt({getExp(exp.Arguments[0])})";
+                case "Cos": return $"cos({getExp(exp.Arguments[0])})";
+                case "Sin": return $"sin({getExp(exp.Arguments[0])})";
+                case "Tan": return $"tan({getExp(exp.Arguments[0])})";
+                case "Acos": return $"acos({getExp(exp.Arguments[0])})";
+                case "Asin": return $"asin({getExp(exp.Arguments[0])})";
+                case "Atan": return $"atan({getExp(exp.Arguments[0])})";
+                case "Atan2": return $"atan2({getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
+                case "Truncate": return $"trunc({getExp(exp.Arguments[0])}, 0)";
+            }
+            return null;
+        }
+        public override string ExpressionLambdaToSqlCallDateTime(MethodCallExpression exp, ExpTSC tsc)
+        {
+            Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
+            if (exp.Object == null)
+            {
+                switch (exp.Method.Name)
+                {
+                    case "Compare": return $"extract(epoch from ({getExp(exp.Arguments[0])})::timestamp-({getExp(exp.Arguments[1])})::timestamp)";
+                    case "DaysInMonth": return $"extract(day from ({getExp(exp.Arguments[0])} || '-' || {getExp(exp.Arguments[1])} || '-01')::timestamp+'1 month'::interval-'1 day'::interval)";
+                    case "Equals": return $"(({getExp(exp.Arguments[0])})::timestamp = ({getExp(exp.Arguments[1])})::timestamp)";
+
+                    case "IsLeapYear":
+                        var isLeapYearArgs1 = getExp(exp.Arguments[0]);
+                        return $"(({isLeapYearArgs1})::int8%4=0 AND ({isLeapYearArgs1})::int8%100<>0 OR ({isLeapYearArgs1})::int8%400=0)";
+
+                    case "Parse": return $"({getExp(exp.Arguments[0])})::timestamp";
+                    case "ParseExact":
+                    case "TryParse":
+                    case "TryParseExact": return $"({getExp(exp.Arguments[0])})::timestamp";
+                }
+            }
+            else
+            {
+                var left = getExp(exp.Object);
+                var args1 = exp.Arguments.Count == 0 ? null : getExp(exp.Arguments[0]);
+                switch (exp.Method.Name)
+                {
+                    case "Add": return $"(({left})::timestamp+(({args1})||' microseconds')::interval)";
+                    case "AddDays": return $"(({left})::timestamp+(({args1})||' day')::interval)";
+                    case "AddHours": return $"(({left})::timestamp+(({args1})||' hour')::interval)";
+                    case "AddMilliseconds": return $"(({left})::timestamp+(({args1})||' milliseconds')::interval)";
+                    case "AddMinutes": return $"(({left})::timestamp+(({args1})||' minute')::interval)";
+                    case "AddMonths": return $"(({left})::timestamp+(({args1})||' month')::interval)";
+                    case "AddSeconds": return $"(({left})::timestamp+(({args1})||' second')::interval)";
+                    case "AddTicks": return $"(({left})::timestamp+(({args1})/10||' microseconds')::interval)";
+                    case "AddYears": return $"(({left})::timestamp+(({args1})||' year')::interval)";
+                    case "Subtract":
+                        switch ((exp.Arguments[0].Type.IsNullableType() ? exp.Arguments[0].Type.GenericTypeArguments.FirstOrDefault() : exp.Arguments[0].Type).FullName)
+                        {
+                            case "System.DateTime": return $"(extract(epoch from ({left})::timestamp-({args1})::timestamp)*1000000)";
+                            case "System.TimeSpan": return $"(({left})::timestamp-(({args1})||' microseconds')::interval)";
+                        }
+                        break;
+                    case "Equals": return $"({left} = ({args1})::timestamp)";
+                    case "CompareTo": return $"extract(epoch from ({left})::timestamp-({args1})::timestamp)";
+                    case "ToString": return exp.Arguments.Count == 0 ? $"to_char({left}, 'YYYY-MM-DD HH24:MI:SS.US')" : null;
+                }
+            }
+            return null;
+        }
+        public override string ExpressionLambdaToSqlCallTimeSpan(MethodCallExpression exp, ExpTSC tsc)
+        {
+            Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
+            if (exp.Object == null)
+            {
+                switch (exp.Method.Name)
+                {
+                    case "Compare": return $"({getExp(exp.Arguments[0])}-({getExp(exp.Arguments[1])}))";
+                    case "Equals": return $"({getExp(exp.Arguments[0])} = {getExp(exp.Arguments[1])})";
+                    case "FromDays": return $"(({getExp(exp.Arguments[0])})*{(long)1000000 * 60 * 60 * 24})";
+                    case "FromHours": return $"(({getExp(exp.Arguments[0])})*{(long)1000000 * 60 * 60})";
+                    case "FromMilliseconds": return $"(({getExp(exp.Arguments[0])})*1000)";
+                    case "FromMinutes": return $"(({getExp(exp.Arguments[0])})*{(long)1000000 * 60})";
+                    case "FromSeconds": return $"(({getExp(exp.Arguments[0])})*1000000)";
+                    case "FromTicks": return $"(({getExp(exp.Arguments[0])})/10)";
+                    case "Parse": return $"({getExp(exp.Arguments[0])})::int8";
+                    case "ParseExact":
+                    case "TryParse":
+                    case "TryParseExact": return $"({getExp(exp.Arguments[0])})::int8";
+                }
+            }
+            else
+            {
+                var left = getExp(exp.Object);
+                var args1 = exp.Arguments.Count == 0 ? null : getExp(exp.Arguments[0]);
+                switch (exp.Method.Name)
+                {
+                    case "Add": return $"({left}+{args1})";
+                    case "Subtract": return $"({left}-({args1}))";
+                    case "Equals": return $"({left} = {args1})";
+                    case "CompareTo": return $"({left}-({args1}))";
+                    case "ToString": return $"({left})::varchar";
+                }
+            }
+            return null;
+        }
+        public override string ExpressionLambdaToSqlCallConvert(MethodCallExpression exp, ExpTSC tsc)
+        {
+            Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
+            if (exp.Object == null)
+            {
+                switch (exp.Method.Name)
+                {
+                    case "ToBoolean": return $"(({getExp(exp.Arguments[0])})::varchar not in ('0','false','f','no'))";
+                    case "ToByte": return $"({getExp(exp.Arguments[0])})::int2";
+                    case "ToChar": return $"substr(({getExp(exp.Arguments[0])})::char, 1, 1)";
+                    case "ToDateTime": return $"({getExp(exp.Arguments[0])})::timestamp";
+                    case "ToDecimal": return $"({getExp(exp.Arguments[0])})::numeric";
+                    case "ToDouble": return $"({getExp(exp.Arguments[0])})::float8";
+                    case "ToInt16": return $"({getExp(exp.Arguments[0])})::int2";
+                    case "ToInt32": return $"({getExp(exp.Arguments[0])})::int4";
+                    case "ToInt64": return $"({getExp(exp.Arguments[0])})::int8";
+                    case "ToSByte": return $"({getExp(exp.Arguments[0])})::int2";
+                    case "ToSingle": return $"({getExp(exp.Arguments[0])})::float4";
+                    case "ToString": return $"({getExp(exp.Arguments[0])})::varchar";
+                    case "ToUInt16": return $"({getExp(exp.Arguments[0])})::int2";
+                    case "ToUInt32": return $"({getExp(exp.Arguments[0])})::int4";
+                    case "ToUInt64": return $"({getExp(exp.Arguments[0])})::int8";
+                }
+            }
+            return null;
+        }
+    }
+}

Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLProvider.cs

@@ -0,0 +1,61 @@
+using FreeSql.Internal;
+using FreeSql.Internal.CommonProvider;
+using System;
+using System.Collections.Generic;
+
+namespace FreeSql.Odbc.PostgreSQL
+{
+
+    public class OdbcPostgreSQLProvider<TMark> : IFreeSql<TMark>
+    {
+
+        static OdbcPostgreSQLProvider()
+        {
+        }
+
+        public ISelect<T1> Select<T1>() where T1 : class => new OdbcPostgreSQLSelect<T1>(this, this.InternalCommonUtils, this.InternalCommonExpression, null);
+        public ISelect<T1> Select<T1>(object dywhere) where T1 : class => new OdbcPostgreSQLSelect<T1>(this, this.InternalCommonUtils, this.InternalCommonExpression, dywhere);
+        public IInsert<T1> Insert<T1>() where T1 : class => new OdbcPostgreSQLInsert<T1>(this, this.InternalCommonUtils, this.InternalCommonExpression);
+        public IInsert<T1> Insert<T1>(T1 source) where T1 : class => this.Insert<T1>().AppendData(source);
+        public IInsert<T1> Insert<T1>(T1[] source) where T1 : class => this.Insert<T1>().AppendData(source);
+        public IInsert<T1> Insert<T1>(IEnumerable<T1> source) where T1 : class => this.Insert<T1>().AppendData(source);
+        public IUpdate<T1> Update<T1>() where T1 : class => new OdbcPostgreSQLUpdate<T1>(this, this.InternalCommonUtils, this.InternalCommonExpression, null);
+        public IUpdate<T1> Update<T1>(object dywhere) where T1 : class => new OdbcPostgreSQLUpdate<T1>(this, this.InternalCommonUtils, this.InternalCommonExpression, dywhere);
+        public IDelete<T1> Delete<T1>() where T1 : class => new OdbcPostgreSQLDelete<T1>(this, this.InternalCommonUtils, this.InternalCommonExpression, null);
+        public IDelete<T1> Delete<T1>(object dywhere) where T1 : class => new OdbcPostgreSQLDelete<T1>(this, this.InternalCommonUtils, this.InternalCommonExpression, dywhere);
+
+        public IAdo Ado { get; }
+        public IAop Aop { get; }
+        public ICodeFirst CodeFirst { get; }
+        public IDbFirst DbFirst { get; }
+        public OdbcPostgreSQLProvider(string masterConnectionString, string[] slaveConnectionString)
+        {
+            this.InternalCommonUtils = new OdbcPostgreSQLUtils(this);
+            this.InternalCommonExpression = new OdbcPostgreSQLExpression(this.InternalCommonUtils);
+
+            this.Ado = new OdbcPostgreSQLAdo(this.InternalCommonUtils, masterConnectionString, slaveConnectionString);
+            this.Aop = new AopProvider();
+
+            this.DbFirst = new OdbcPostgreSQLDbFirst(this, this.InternalCommonUtils, this.InternalCommonExpression);
+            this.CodeFirst = new OdbcPostgreSQLCodeFirst(this, this.InternalCommonUtils, this.InternalCommonExpression);
+        }
+
+        internal CommonUtils InternalCommonUtils { get; }
+        internal CommonExpression InternalCommonExpression { get; }
+
+        public void Transaction(Action handler) => Ado.Transaction(handler);
+
+        public void Transaction(Action handler, TimeSpan timeout) => Ado.Transaction(handler, timeout);
+
+        ~OdbcPostgreSQLProvider()
+        {
+            this.Dispose();
+        }
+        bool _isdisposed = false;
+        public void Dispose()
+        {
+            if (_isdisposed) return;
+            (this.Ado as AdoProvider)?.Dispose();
+        }
+    }
+}

Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLUtils.cs

@@ -0,0 +1,160 @@
+using FreeSql.Internal;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Collections.Concurrent;
+using System.Data.Common;
+using System.Linq;
+using System.Net;
+using System.Text;
+using System.Linq.Expressions;
+using System.Reflection;
+using System.Data.Odbc;
+
+namespace FreeSql.Odbc.PostgreSQL
+{
+
+    class OdbcPostgreSQLUtils : CommonUtils
+    {
+        public OdbcPostgreSQLUtils(IFreeSql orm) : base(orm)
+        {
+        }
+
+        static Array getParamterArrayValue(Type arrayType, object value, object defaultValue)
+        {
+            var valueArr = value as Array;
+            var len = valueArr.GetLength(0);
+            var ret = Array.CreateInstance(arrayType, len);
+            for (var a = 0; a < len; a++)
+            {
+                var item = valueArr.GetValue(a);
+                ret.SetValue(item == null ? defaultValue : getParamterValue(item.GetType(), item, 1), a);
+            }
+            return ret;
+        }
+        static Dictionary<string, Func<object, object>> dicGetParamterValue = new Dictionary<string, Func<object, object>> {
+            { typeof(uint).FullName, a => long.Parse(string.Concat(a)) }, { typeof(uint[]).FullName, a => getParamterArrayValue(typeof(long), a, 0) }, { typeof(uint?[]).FullName, a => getParamterArrayValue(typeof(long?), a, null) },
+            { typeof(ulong).FullName, a => decimal.Parse(string.Concat(a)) }, { typeof(ulong[]).FullName, a => getParamterArrayValue(typeof(decimal), a, 0) }, { typeof(ulong?[]).FullName, a => getParamterArrayValue(typeof(decimal?), a, null) },
+            { typeof(ushort).FullName, a => int.Parse(string.Concat(a)) }, { typeof(ushort[]).FullName, a => getParamterArrayValue(typeof(int), a, 0) }, { typeof(ushort?[]).FullName, a => getParamterArrayValue(typeof(int?), a, null) },
+            { typeof(byte).FullName, a => short.Parse(string.Concat(a)) }, { typeof(byte[]).FullName, a => getParamterArrayValue(typeof(short), a, 0) }, { typeof(byte?[]).FullName, a => getParamterArrayValue(typeof(short?), a, null) },
+            { typeof(sbyte).FullName, a => short.Parse(string.Concat(a)) }, { typeof(sbyte[]).FullName, a => getParamterArrayValue(typeof(short), a, 0) }, { typeof(sbyte?[]).FullName, a => getParamterArrayValue(typeof(short?), a, null) },
+        };
+        static object getParamterValue(Type type, object value, int level = 0)
+        {
+            if (type.FullName == "System.Byte[]") return value;
+            if (type.IsArray && level == 0)
+            {
+                var elementType = type.GetElementType();
+                Type enumType = null;
+                if (elementType.IsEnum) enumType = elementType;
+                else if (elementType.IsNullableType() && elementType.GenericTypeArguments.First().IsEnum) enumType = elementType.GenericTypeArguments.First();
+                if (enumType != null) return enumType.GetCustomAttributes(typeof(FlagsAttribute), false).Any() ?
+                    getParamterArrayValue(typeof(long), value, elementType.IsEnum ? null : Enum.GetValues(enumType).GetValue(0)) :
+                    getParamterArrayValue(typeof(int), value, elementType.IsEnum ? null : Enum.GetValues(enumType).GetValue(0));
+                return dicGetParamterValue.TryGetValue(type.FullName, out var trydicarr) ? trydicarr(value) : value;
+            }
+            if (type.IsNullableType()) type = type.GenericTypeArguments.First();
+            if (type.IsEnum) return (int)value;
+            if (dicGetParamterValue.TryGetValue(type.FullName, out var trydic)) return trydic(value);
+            return value;
+        }
+
+        public override DbParameter AppendParamter(List<DbParameter> _params, string parameterName, Type type, object value)
+        {
+            if (string.IsNullOrEmpty(parameterName)) parameterName = $"p_{_params?.Count}";
+            if (value != null) value = getParamterValue(type, value);
+            var ret = new OdbcParameter { ParameterName = QuoteParamterName(parameterName), Value = value };
+            //if (value.GetType().IsEnum || value.GetType().GenericTypeArguments.FirstOrDefault()?.IsEnum == true) {
+            //	ret.DataTypeName = "";
+            //} else {
+            var tp = _orm.CodeFirst.GetDbInfo(type)?.type;
+            if (tp != null) ret.OdbcType = (OdbcType)tp.Value;
+            //}
+            _params?.Add(ret);
+            return ret;
+        }
+
+        public override DbParameter[] GetDbParamtersByObject(string sql, object obj) =>
+            Utils.GetDbParamtersByObject<OdbcParameter>(sql, obj, null, (name, type, value) =>
+            {
+                if (value != null) value = getParamterValue(type, value);
+                var ret = new OdbcParameter { ParameterName = $"@{name}", Value = value };
+                //if (value.GetType().IsEnum || value.GetType().GenericTypeArguments.FirstOrDefault()?.IsEnum == true) {
+                //	ret.DataTypeName = "";
+                //} else {
+                var tp = _orm.CodeFirst.GetDbInfo(type)?.type;
+                if (tp != null) ret.OdbcType = (OdbcType)tp.Value;
+                //}
+                return ret;
+            });
+
+        public override string FormatSql(string sql, params object[] args) => sql?.FormatOdbcPostgreSQL(args);
+        public override string QuoteSqlName(string name)
+        {
+            var nametrim = name.Trim();
+            if (nametrim.StartsWith("(") && nametrim.EndsWith(")"))
+                return nametrim; //原生SQL
+            return $"\"{nametrim.Trim('"').Replace(".", "\".\"")}\"";
+        }
+        public override string TrimQuoteSqlName(string name)
+        {
+            var nametrim = name.Trim();
+            if (nametrim.StartsWith("(") && nametrim.EndsWith(")"))
+                return nametrim; //原生SQL
+            return $"{nametrim.Trim('"').Replace("\".\"", ".").Replace(".\"", ".")}";
+        }
+        public override string QuoteParamterName(string name) => $"@{(_orm.CodeFirst.IsSyncStructureToLower ? name.ToLower() : name)}";
+        public override string IsNull(string sql, object value) => $"coalesce({sql}, {value})";
+        public override string StringConcat(string[] objs, Type[] types) => $"{string.Join(" || ", objs)}";
+        public override string Mod(string left, string right, Type leftType, Type rightType) => $"{left} % {right}";
+        public override string Div(string left, string right, Type leftType, Type rightType) => $"{left} / {right}";
+
+        public override string QuoteWriteParamter(Type type, string paramterName) => paramterName;
+        public override string QuoteReadColumn(Type type, string columnName) => columnName;
+
+        public override string GetNoneParamaterSqlValue(List<DbParameter> specialParams, Type type, object value)
+        {
+            if (value == null) return "NULL";
+            value = getParamterValue(type, value);
+            var type2 = value.GetType();
+            if (type2 == typeof(byte[]))
+            {
+                var bytes = value as byte[];
+                var sb = new StringBuilder().Append("'\\x");
+                foreach (var vc in bytes)
+                {
+                    if (vc < 10) sb.Append("0");
+                    sb.Append(vc.ToString("X"));
+                }
+                return sb.Append("'").ToString(); //val = Encoding.UTF8.GetString(val as byte[]);
+            }
+            else if (type2 == typeof(TimeSpan) || type2 == typeof(TimeSpan?))
+            {
+                var ts = (TimeSpan)value;
+                return $"'{Math.Min(24, (int)Math.Floor(ts.TotalHours))}:{ts.Minutes}:{ts.Seconds}'";
+            }
+            else if (value is Array)
+            {
+                var valueArr = value as Array;
+                var eleType = type2.GetElementType();
+                var len = valueArr.GetLength(0);
+                var sb = new StringBuilder().Append("ARRAY[");
+                for (var a = 0; a < len; a++)
+                {
+                    var item = valueArr.GetValue(a);
+                    if (a > 0) sb.Append(",");
+                    sb.Append(GetNoneParamaterSqlValue(specialParams, eleType, item));
+                }
+                sb.Append("]");
+                var dbinfo = _orm.CodeFirst.GetDbInfo(type);
+                if (dbinfo.HasValue) sb.Append("::").Append(dbinfo.Value.dbtype);
+                return sb.ToString();
+            }
+            else if (dicGetParamterValue.ContainsKey(type2.FullName))
+            {
+                value = string.Concat(value);
+            }
+            return FormatSql("{0}", value, 1);
+        }
+    }
+}

Providers/FreeSql.Provider.Odbc/SqlServer/OdbcSqlServerCodeFirst.cs

@@ -1,15 +1,11 @@
-using FreeSql.DataAnnotations;
-using FreeSql.DatabaseModel;
-using FreeSql.Internal;
+using FreeSql.Internal;
 using FreeSql.Internal.Model;
 using System;
-using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Data;
 using System.Data.Odbc;
 using System.Linq;
 using System.Text;
-using System.Text.RegularExpressions;
 
 namespace FreeSql.Odbc.SqlServer
 {

Providers/FreeSql.Provider.Odbc/SqlServer/OdbcSqlServerExpression.cs

@@ -362,11 +362,11 @@ namespace FreeSql.Odbc.SqlServer
                         switch ((exp.Arguments[0].Type.IsNullableType() ? exp.Arguments[0].Type.GenericTypeArguments.FirstOrDefault() : exp.Arguments[0].Type).FullName)
                         {
                             case "System.DateTime": return $"datediff(second, {args1}, {left})";
-                            case "System.TimeSpan": return $"dateadd(second, {args1}*-1, {left})";
+                            case "System.TimeSpan": return $"dateadd(second, ({args1})*-1, {left})";
                         }
                         break;
-                    case "Equals": return $"({left} = {getExp(exp.Arguments[0])})";
-                    case "CompareTo": return $"datediff(second,{getExp(exp.Arguments[0])},{left})";
+                    case "Equals": return $"({left} = {args1})";
+                    case "CompareTo": return $"datediff(second,{args1},{left})";
                     case "ToString": return exp.Arguments.Count == 0 ? $"convert(varchar, {left}, 121)" : null;
                 }
             }
@@ -401,8 +401,8 @@ namespace FreeSql.Odbc.SqlServer
                 {
                     case "Add": return $"({left}+{args1})";
                     case "Subtract": return $"({left}-({args1}))";
-                    case "Equals": return $"({left} = {getExp(exp.Arguments[0])})";
-                    case "CompareTo": return $"({left}-({getExp(exp.Arguments[0])}))";
+                    case "Equals": return $"({left} = {args1})";
+                    case "CompareTo": return $"({left}-({args1}))";
                     case "ToString": return $"cast({left} as varchar)";
                 }
             }

Providers/FreeSql.Provider.Odbc/readme.md

@@ -0,0 +1,25 @@
+FreeSql.Provider.Odbc 实现 ODBC 访问数据库，ODBC 属于比较原始的技术，更新慢，各大数据库厂支持得标准不一，不到万不得已最好别用 odbc，坑比较多。
+
+FreeSql.Provider.Odbc 做了四种数据库的专用实现：SqlServer、PostgreSQL、Oracle、MySql，和一种通用实现。
+
+专用实现比较有针对性，和原来的 FreeSql.Provider.SqlServer ado.net 相比，只支持较少的基础类型，其他功能几乎都有，包括 CodeFirst 自动迁移。
+
+# 通用实现
+
+通用实现为了让用户自己适配更多的数据库，比如连接 mssql 2000、db2 等数据库。
+
+使用者只需求重写类 FreeSql.Odbc.Default.OdbcAdapter 就可以自定义访问不同的数据库。
+
+我们默认做了一套 sqlserver 的语法和映射适配，代码在 Default/OdbcAdapter.cs，请查看代码了解。
+
+```csharp
+class Mssql2000Adapter : FreeSql.Odbc.Default.OdbcAdapter
+{
+    public override string InsertAfterGetIdentitySql => "SELECT SCOPE_IDENTITY()";
+    //可以重写更多的设置
+}
+
+fsql.SetOdbcAdapter(new Mssql2000Adapter());
+```
+
+适配好新的 OdbcAdapter 后，请在 FreeSqlBuilder.Build 之后调用 IFreeSql.SetOdbcAdapter 方法生效。

Providers/FreeSql.Provider.Oracle/FreeSql.Provider.Oracle.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
-		<Version>0.9.17</Version>
+		<Version>0.9.18</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql 数据库实现，基于 Oracle 11</Description>

Providers/FreeSql.Provider.Oracle/OracleExpression.cs

@@ -385,8 +385,8 @@ namespace FreeSql.Oracle
                             case "System.TimeSpan": return $"({left}-{args1})";
                         }
                         break;
-                    case "Equals": return $"({left} = {getExp(exp.Arguments[0])})";
-                    case "CompareTo": return $"extract(day from ({left}-({getExp(exp.Arguments[0])})))";
+                    case "Equals": return $"({left} = {args1})";
+                    case "CompareTo": return $"extract(day from ({left}-({args1})))";
                     case "ToString": return exp.Arguments.Count == 0 ? $"to_char({left},'YYYY-MM-DD HH24:MI:SS.FF6')" : null;
                 }
             }
@@ -421,8 +421,8 @@ namespace FreeSql.Oracle
                 {
                     case "Add": return $"({left}+{args1})";
                     case "Subtract": return $"({left}-({args1}))";
-                    case "Equals": return $"({left} = {getExp(exp.Arguments[0])})";
-                    case "CompareTo": return $"extract(day from ({left}-({getExp(exp.Arguments[0])})))";
+                    case "Equals": return $"({left} = {args1})";
+                    case "CompareTo": return $"extract(day from ({left}-({args1})))";
                     case "ToString": return $"to_char({left})";
                 }
             }

Providers/FreeSql.Provider.PostgreSQL/FreeSql.Provider.PostgreSQL.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
-		<Version>0.9.17</Version>
+		<Version>0.9.18</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql 数据库实现，基于 PostgreSQL 9.5</Description>

Providers/FreeSql.Provider.PostgreSQL/PostgreSQLCodeFirst.cs

@@ -252,7 +252,10 @@ where ns.nspname = {0} and c.relname = {1}", tboldname ?? tbname);
                                 tbcol.Attribute.DbType.Contains("[]") != (tbstructcol.attndims > 0))
                                 sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ALTER COLUMN ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" TYPE ").Append(tbcol.Attribute.DbType.Split(' ').First()).Append(";\r\n");
                             if (tbcol.Attribute.IsNullable != tbstructcol.is_nullable)
-                                sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ALTER COLUMN ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" ").Append(tbcol.Attribute.IsNullable == true ? "DROP" : "SET").Append(" NOT NULL;\r\n");
+                            {
+                                if (tbcol.Attribute.IsNullable != true || tbcol.Attribute.IsNullable == true && tbcol.Attribute.IsPrimary == false)
+                                    sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ALTER COLUMN ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" ").Append(tbcol.Attribute.IsNullable == true ? "DROP" : "SET").Append(" NOT NULL;\r\n");
+                            }
                             if (tbcol.Attribute.IsIdentity != tbstructcol.is_identity)
                                 seqcols.Add((tbcol, tbname, tbcol.Attribute.IsIdentity == true));
                             if (string.Compare(tbstructcol.column, tbcol.Attribute.OldName, true) == 0)

Providers/FreeSql.Provider.PostgreSQL/PostgreSQLExpression.cs

@@ -494,8 +494,8 @@ namespace FreeSql.PostgreSQL
                             case "System.TimeSpan": return $"(({left})::timestamp-(({args1})||' microseconds')::interval)";
                         }
                         break;
-                    case "Equals": return $"({left} = ({getExp(exp.Arguments[0])})::timestamp)";
-                    case "CompareTo": return $"extract(epoch from ({left})::timestamp-({getExp(exp.Arguments[0])})::timestamp)";
+                    case "Equals": return $"({left} = ({args1})::timestamp)";
+                    case "CompareTo": return $"extract(epoch from ({left})::timestamp-({args1})::timestamp)";
                     case "ToString": return exp.Arguments.Count == 0 ? $"to_char({left}, 'YYYY-MM-DD HH24:MI:SS.US')" : null;
                 }
             }
@@ -530,8 +530,8 @@ namespace FreeSql.PostgreSQL
                 {
                     case "Add": return $"({left}+{args1})";
                     case "Subtract": return $"({left}-({args1}))";
-                    case "Equals": return $"({left} = {getExp(exp.Arguments[0])})";
-                    case "CompareTo": return $"({left}-({getExp(exp.Arguments[0])}))";
+                    case "Equals": return $"({left} = {args1})";
+                    case "CompareTo": return $"({left}-({args1}))";
                     case "ToString": return $"({left})::varchar";
                 }
             }

Providers/FreeSql.Provider.SqlServer/FreeSql.Provider.SqlServer.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net451</TargetFrameworks>
-		<Version>0.9.17</Version>
+		<Version>0.9.18</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql 数据库实现，基于 SqlServer 2005+，并根据版本适配分页方法：row_number 或 offset fetch next</Description>

Providers/FreeSql.Provider.SqlServer/SqlServerExpression.cs

@@ -362,11 +362,11 @@ namespace FreeSql.SqlServer
                         switch ((exp.Arguments[0].Type.IsNullableType() ? exp.Arguments[0].Type.GenericTypeArguments.FirstOrDefault() : exp.Arguments[0].Type).FullName)
                         {
                             case "System.DateTime": return $"datediff(second, {args1}, {left})";
-                            case "System.TimeSpan": return $"dateadd(second, {args1}*-1, {left})";
+                            case "System.TimeSpan": return $"dateadd(second, ({args1})*-1, {left})";
                         }
                         break;
-                    case "Equals": return $"({left} = {getExp(exp.Arguments[0])})";
-                    case "CompareTo": return $"datediff(second,{getExp(exp.Arguments[0])},{left})";
+                    case "Equals": return $"({left} = {args1})";
+                    case "CompareTo": return $"datediff(second,{args1},{left})";
                     case "ToString": return exp.Arguments.Count == 0 ? $"convert(varchar, {left}, 121)" : null;
                 }
             }
@@ -401,8 +401,8 @@ namespace FreeSql.SqlServer
                 {
                     case "Add": return $"({left}+{args1})";
                     case "Subtract": return $"({left}-({args1}))";
-                    case "Equals": return $"({left} = {getExp(exp.Arguments[0])})";
-                    case "CompareTo": return $"({left}-({getExp(exp.Arguments[0])}))";
+                    case "Equals": return $"({left} = {args1})";
+                    case "CompareTo": return $"({left}-({args1}))";
                     case "ToString": return $"cast({left} as varchar)";
                 }
             }

Providers/FreeSql.Provider.Sqlite/FreeSql.Provider.Sqlite.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
-		<Version>0.9.17</Version>
+		<Version>0.9.18</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql 数据库实现，基于 Sqlite 3.0</Description>

Providers/FreeSql.Provider.Sqlite/SqliteExpression.cs

@@ -384,10 +384,10 @@ namespace FreeSql.Sqlite
                         switch ((exp.Arguments[0].Type.IsNullableType() ? exp.Arguments[0].Type.GenericTypeArguments.FirstOrDefault() : exp.Arguments[0].Type).FullName)
                         {
                             case "System.DateTime": return $"(strftime('%s',{left})-strftime('%s',{args1}))";
-                            case "System.TimeSpan": return $"datetime({left},(-{args1})||' seconds')";
+                            case "System.TimeSpan": return $"datetime({left},(({args1})*-1)||' seconds')";
                         }
                         break;
-                    case "Equals": return $"({left} = {getExp(exp.Arguments[0])})";
+                    case "Equals": return $"({left} = {args1})";
                     case "CompareTo": return $"(strftime('%s',{left})-strftime('%s',{args1}))";
                     case "ToString": return exp.Arguments.Count == 0 ? $"strftime('%Y-%m-%d %H:%M.%f',{left})" : null;
                 }
@@ -423,8 +423,8 @@ namespace FreeSql.Sqlite
                 {
                     case "Add": return $"({left}+{args1})";
                     case "Subtract": return $"({left}-({args1}))";
-                    case "Equals": return $"({left} = {getExp(exp.Arguments[0])})";
-                    case "CompareTo": return $"({left}-({getExp(exp.Arguments[0])}))";
+                    case "Equals": return $"({left} = {args1})";
+                    case "CompareTo": return $"({left}-({args1}))";
                     case "ToString": return $"cast({left} as character)";
                 }
             }