- 增加 IDbFirst.GetTableByName 方法获取单表信息，包括列详情、主键、唯一键、索引、备注；

FreeSql.Tests/FreeSql.Tests.Provider.MySqlConnector/MySqlConnector/MySqlDbFirstTest.cs

@@ -9,17 +9,29 @@ namespace FreeSql.Tests.MySqlConnector
         [Fact]
         public void GetDatabases()
         {
-
             var t1 = g.mysql.DbFirst.GetDatabases();
-
         }
 
         [Fact]
         public void GetTablesByDatabase()
         {
-
             var t2 = g.mysql.DbFirst.GetTablesByDatabase(g.mysql.DbFirst.GetDatabases()[0]);
+            Assert.True(t2.Count > 0);
+        }
 
+        [Fact]
+        public void GetTableByName()
+        {
+            var fsql = g.mysql;
+            var t1 = fsql.DbFirst.GetTableByName("tb_alltype");
+            var t2 = fsql.DbFirst.GetTableByName("cccddd_mysqlconnector.tb_alltype");
+            Assert.NotNull(t1);
+            Assert.NotNull(t2);
+            Assert.True(t1.Columns.Count > 0);
+            Assert.True(t2.Columns.Count > 0);
+            Assert.Equal(t1.Columns.Count, t2.Columns.Count);
+            var t3 = fsql.DbFirst.GetTableByName("notexists_tb");
+            Assert.Null(t3);
         }
 
         [Fact]

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Dameng/DamengDbFirstTest.cs

@@ -9,19 +9,32 @@ namespace FreeSql.Tests.Odbc.Dameng
         [Fact]
         public void GetDatabases()
         {
-
             var t1 = g.dameng.DbFirst.GetDatabases();
-
         }
 
         [Fact]
         public void GetTablesByDatabase()
         {
-
             var t2 = g.dameng.DbFirst.GetTablesByDatabase();
+            Assert.True(t2.Count > 0);
             //var tb = g.dameng.Ado.ExecuteArray(System.Data.CommandType.Text, "select * from \"tb_dbfirst\"");
         }
 
+        [Fact]
+        public void GetTableByName()
+        {
+            var fsql = g.dameng;
+            var t1 = fsql.DbFirst.GetTableByName("tb_alltype");
+            var t2 = fsql.DbFirst.GetTableByName("2user.tb_alltype");
+            Assert.NotNull(t1);
+            Assert.NotNull(t2);
+            Assert.True(t1.Columns.Count > 0);
+            Assert.True(t2.Columns.Count > 0);
+            Assert.Equal(t1.Columns.Count, t2.Columns.Count);
+            var t3 = fsql.DbFirst.GetTableByName("notexists_tb");
+            Assert.Null(t3);
+        }
+
         [Fact]
         public void ExistsTable()
         {

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/KingbaseES/KingbaseESDbFirstTest.cs

@@ -16,7 +16,22 @@ namespace FreeSql.Tests.Odbc.KingbaseES
         public void GetTablesByDatabase()
         {
             var t2 = g.kingbaseES.DbFirst.GetTablesByDatabase();
-            //var tb = g.kingbaseES.Ado.ExecuteArray(System.Data.CommandType.Text, "select * from \"tb_dbfirst\"");
+            Assert.True(t2.Count > 0);
+        }
+
+        [Fact]
+        public void GetTableByName()
+        {
+            var fsql = g.kingbaseES;
+            var t1 = fsql.DbFirst.GetTableByName("tb_alltype");
+            var t2 = fsql.DbFirst.GetTableByName("public.tb_alltype");
+            Assert.NotNull(t1);
+            Assert.NotNull(t2);
+            Assert.True(t1.Columns.Count > 0);
+            Assert.True(t2.Columns.Count > 0);
+            Assert.Equal(t1.Columns.Count, t2.Columns.Count);
+            var t3 = fsql.DbFirst.GetTableByName("notexists_tb");
+            Assert.Null(t3);
         }
 
         [Fact]

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/MySql/MySqlDbFirstTest.cs

@@ -9,17 +9,29 @@ namespace FreeSql.Tests.Odbc.MySql
         [Fact]
         public void GetDatabases()
         {
-
             var t1 = g.mysql.DbFirst.GetDatabases();
-
         }
 
         [Fact]
         public void GetTablesByDatabase()
         {
-
             var t2 = g.mysql.DbFirst.GetTablesByDatabase(g.mysql.DbFirst.GetDatabases()[0]);
+            Assert.True(t2.Count > 0);
+        }
 
+        [Fact]
+        public void GetTableByName()
+        {
+            var fsql = g.mysql;
+            var t1 = fsql.DbFirst.GetTableByName("tb_alltype");
+            var t2 = fsql.DbFirst.GetTableByName("cccddd_odbc.tb_alltype");
+            Assert.NotNull(t1);
+            Assert.NotNull(t2);
+            Assert.True(t1.Columns.Count > 0);
+            Assert.True(t2.Columns.Count > 0);
+            Assert.Equal(t1.Columns.Count, t2.Columns.Count);
+            var t3 = fsql.DbFirst.GetTableByName("notexists_tb");
+            Assert.Null(t3);
         }
 
         [Fact]

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/Oracle/OracleDbFirstTest.cs

@@ -9,19 +9,32 @@ namespace FreeSql.Tests.Odbc.Oracle
         [Fact]
         public void GetDatabases()
         {
-
             var t1 = g.oracle.DbFirst.GetDatabases();
-
         }
 
         [Fact]
         public void GetTablesByDatabase()
         {
-
             var t2 = g.oracle.DbFirst.GetTablesByDatabase();
+            Assert.True(t2.Count > 0);
             //var tb = g.oracle.Ado.ExecuteArray(System.Data.CommandType.Text, "select * from \"tb_dbfirst\"");
         }
 
+        [Fact]
+        public void GetTableByName()
+        {
+            var fsql = g.oracle;
+            var t1 = fsql.DbFirst.GetTableByName("tb_alltype");
+            var t2 = fsql.DbFirst.GetTableByName("1odbc.tb_alltype");
+            Assert.NotNull(t1);
+            Assert.NotNull(t2);
+            Assert.True(t1.Columns.Count > 0);
+            Assert.True(t2.Columns.Count > 0);
+            Assert.Equal(t1.Columns.Count, t2.Columns.Count);
+            var t3 = fsql.DbFirst.GetTableByName("notexists_tb");
+            Assert.Null(t3);
+        }
+
         [Fact]
         public void ExistsTable()
         {

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

@@ -10,20 +10,29 @@ namespace FreeSql.Tests.Odbc.PostgreSQL
         [Fact]
         public void GetDatabases()
         {
-
             var t1 = g.pgsql.DbFirst.GetDatabases();
-
         }
 
         [Fact]
         public void GetTablesByDatabase()
         {
+            var t2 = g.pgsql.DbFirst.GetTablesByDatabase();
+            Assert.True(t2.Count > 0);
+        }
 
-            var t2 = g.pgsql.DbFirst.GetTablesByDatabase(g.pgsql.DbFirst.GetDatabases()[2]);
+        [Fact]
-
+        public void GetTableByName()
-            var tb_alltype = t2.Where(a => a.Name == "tb_alltype").FirstOrDefault();
+        {
-
+            var fsql = g.pgsql;
-            var tb_identity = t2.Where(a => a.Name == "test_new").FirstOrDefault();
+            var t1 = fsql.DbFirst.GetTableByName("tb_alltype");
+            var t2 = fsql.DbFirst.GetTableByName("public.tb_alltype");
+            Assert.NotNull(t1);
+            Assert.NotNull(t2);
+            Assert.True(t1.Columns.Count > 0);
+            Assert.True(t2.Columns.Count > 0);
+            Assert.Equal(t1.Columns.Count, t2.Columns.Count);
+            var t3 = fsql.DbFirst.GetTableByName("notexists_tb");
+            Assert.Null(t3);
         }
 
         [Fact]

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/SqlServer/SqlServerDbFirstTest.cs

@@ -10,17 +10,29 @@ namespace FreeSql.Tests.Odbc.SqlServer
         [Fact]
         public void GetDatabases()
         {
-
             var t1 = g.sqlserver.DbFirst.GetDatabases();
-
         }
 
         [Fact]
         public void GetTablesByDatabase()
         {
-
             var t2 = g.sqlserver.DbFirst.GetTablesByDatabase();
+            Assert.True(t2.Count > 0);
+        }
 
+        [Fact]
+        public void GetTableByName()
+        {
+            var fsql = g.sqlserver;
+            var t1 = fsql.DbFirst.GetTableByName("tb_alltype");
+            var t2 = fsql.DbFirst.GetTableByName("dbo.tb_alltype");
+            Assert.NotNull(t1);
+            Assert.NotNull(t2);
+            Assert.True(t1.Columns.Count > 0);
+            Assert.True(t2.Columns.Count > 0);
+            Assert.Equal(t1.Columns.Count, t2.Columns.Count);
+            var t3 = fsql.DbFirst.GetTableByName("notexists_tb");
+            Assert.Null(t3);
         }
 
         [Fact]

FreeSql.Tests/FreeSql.Tests/Dameng/DamengDbFirstTest.cs

@@ -9,19 +9,32 @@ namespace FreeSql.Tests.Dameng
         [Fact]
         public void GetDatabases()
         {
-
             var t1 = g.dameng.DbFirst.GetDatabases();
-
         }
 
         [Fact]
         public void GetTablesByDatabase()
         {
-
             var t2 = g.dameng.DbFirst.GetTablesByDatabase();
+            Assert.True(t2.Count > 0);
             //var tb = g.dameng.Ado.ExecuteArray(System.Data.CommandType.Text, "select * from \"tb_dbfirst\"");
         }
 
+        [Fact]
+        public void GetTableByName()
+        {
+            var fsql = g.dameng;
+            var t1 = fsql.DbFirst.GetTableByName("tb_alltype");
+            var t2 = fsql.DbFirst.GetTableByName("2user.tb_alltype");
+            Assert.NotNull(t1);
+            Assert.NotNull(t2);
+            Assert.True(t1.Columns.Count > 0);
+            Assert.True(t2.Columns.Count > 0);
+            Assert.Equal(t1.Columns.Count, t2.Columns.Count);
+            var t3 = fsql.DbFirst.GetTableByName("notexists_tb");
+            Assert.Null(t3);
+        }
+
         [Fact]
         public void ExistsTable()
         {

FreeSql.Tests/FreeSql.Tests/MySql/MySqlDbFirstTest.cs

@@ -9,17 +9,29 @@ namespace FreeSql.Tests.MySql
         [Fact]
         public void GetDatabases()
         {
-
             var t1 = g.mysql.DbFirst.GetDatabases();
-
         }
 
         [Fact]
         public void GetTablesByDatabase()
         {
-
             var t2 = g.mysql.DbFirst.GetTablesByDatabase(g.mysql.DbFirst.GetDatabases()[0]);
+            Assert.True(t2.Count > 0);
+        }
 
+        [Fact]
+        public void GetTableByName()
+        {
+            var fsql = g.mysql;
+            var t1 = fsql.DbFirst.GetTableByName("tb_alltype");
+            var t2 = fsql.DbFirst.GetTableByName("cccddd.tb_alltype");
+            Assert.NotNull(t1);
+            Assert.NotNull(t2);
+            Assert.True(t1.Columns.Count > 0);
+            Assert.True(t2.Columns.Count > 0);
+            Assert.Equal(t1.Columns.Count, t2.Columns.Count);
+            var t3 = fsql.DbFirst.GetTableByName("notexists_tb");
+            Assert.Null(t3);
         }
 
         [Fact]

FreeSql.Tests/FreeSql.Tests/Oracle/OracleDbFirstTest.cs

@@ -9,19 +9,32 @@ namespace FreeSql.Tests.Oracle
         [Fact]
         public void GetDatabases()
         {
-
             var t1 = g.oracle.DbFirst.GetDatabases();
-
         }
 
         [Fact]
         public void GetTablesByDatabase()
         {
-
             var t2 = g.oracle.DbFirst.GetTablesByDatabase();
+            Assert.True(t2.Count > 0);
             //var tb = g.oracle.Ado.ExecuteArray(System.Data.CommandType.Text, "select * from \"tb_dbfirst\"");
         }
 
+        [Fact]
+        public void GetTableByName()
+        {
+            var fsql = g.oracle;
+            var t1 = fsql.DbFirst.GetTableByName("tb_alltype");
+            var t2 = fsql.DbFirst.GetTableByName("1user.tb_alltype");
+            Assert.NotNull(t1);
+            Assert.NotNull(t2);
+            Assert.True(t1.Columns.Count > 0);
+            Assert.True(t2.Columns.Count > 0);
+            Assert.Equal(t1.Columns.Count, t2.Columns.Count);
+            var t3 = fsql.DbFirst.GetTableByName("notexists_tb");
+            Assert.Null(t3);
+        }
+
         [Fact]
         public void ExistsTable()
         {

FreeSql.Tests/FreeSql.Tests/PostgreSQL/PostgreSQLDbFirstTest.cs

@@ -10,21 +10,29 @@ namespace FreeSql.Tests.PostgreSQL
         [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]);
+            Assert.True(t2.Count > 0);
+        }
 
-            var tb_alltype = t2.Where(a => a.Name == "tb_alltype").FirstOrDefault();
+        [Fact]
-
+        public void GetTableByName()
-            var tb_identity = t2.Where(a => a.Name == "test_new").FirstOrDefault();
+        {
-
+            var fsql = g.pgsql;
+            var t1 = fsql.DbFirst.GetTableByName("tb_alltype");
+            var t2 = fsql.DbFirst.GetTableByName("public.tb_alltype");
+            Assert.NotNull(t1);
+            Assert.NotNull(t2);
+            Assert.True(t1.Columns.Count > 0);
+            Assert.True(t2.Columns.Count > 0);
+            Assert.Equal(t1.Columns.Count, t2.Columns.Count);
+            var t3 = fsql.DbFirst.GetTableByName("notexists_tb");
+            Assert.Null(t3);
         }
 
         [Fact]

FreeSql.Tests/FreeSql.Tests/ShenTong/ShenTongDbFirstTest.cs

@@ -9,9 +9,7 @@ namespace FreeSql.Tests.ShenTong
         [Fact]
         public void GetDatabases()
         {
-
             var t1 = g.shentong.DbFirst.GetDatabases();
-
         }
 
         [Fact]
@@ -19,7 +17,23 @@ namespace FreeSql.Tests.ShenTong
         {
             var t1 = g.shentong.DbFirst.GetTablesByDatabase();
             var t2 = g.shentong.DbFirst.GetTablesByDatabase(g.shentong.DbFirst.GetDatabases()[0]);
+            Assert.True(t1.Count > 0);
+            Assert.True(t2.Count > 0);
+        }
 
+        [Fact]
+        public void GetTableByName()
+        {
+            var fsql = g.shentong;
+            var t1 = fsql.DbFirst.GetTableByName("tb_alltype");
+            var t2 = fsql.DbFirst.GetTableByName("public.tb_alltype");
+            Assert.NotNull(t1);
+            Assert.NotNull(t2);
+            Assert.True(t1.Columns.Count > 0);
+            Assert.True(t2.Columns.Count > 0);
+            Assert.Equal(t1.Columns.Count, t2.Columns.Count);
+            var t3 = fsql.DbFirst.GetTableByName("notexists_tb");
+            Assert.Null(t3);
         }
 
         [Fact]

FreeSql.Tests/FreeSql.Tests/SqlServer/SqlServerDbFirstTest.cs

@@ -19,17 +19,29 @@ namespace FreeSql.Tests.SqlServer
         [Fact]
         public void GetDatabases()
         {
-
             var t1 = g.sqlserver.DbFirst.GetDatabases();
-
         }
 
         [Fact]
         public void GetTablesByDatabase()
         {
-
             var t2 = g.sqlserver.DbFirst.GetTablesByDatabase();
+            Assert.True(t2.Count > 0);
+        }
 
+        [Fact]
+        public void GetTableByName()
+        {
+            var fsql = g.sqlserver;
+            var t1 = fsql.DbFirst.GetTableByName("tb_alltype");
+            var t2 = fsql.DbFirst.GetTableByName("dbo.tb_alltype");
+            Assert.NotNull(t1);
+            Assert.NotNull(t2);
+            Assert.True(t1.Columns.Count > 0);
+            Assert.True(t2.Columns.Count > 0);
+            Assert.Equal(t1.Columns.Count, t2.Columns.Count);
+            var t3 = fsql.DbFirst.GetTableByName("notexists_tb");
+            Assert.Null(t3);
         }
 
         [Fact]

FreeSql.Tests/FreeSql.Tests/Sqlite/SqliteDbFirstTest.cs

@@ -9,17 +9,29 @@ namespace FreeSql.Tests.Sqlite
         [Fact]
         public void GetDatabases()
         {
-
             var t1 = g.sqlite.DbFirst.GetDatabases();
-
         }
 
         [Fact]
         public void GetTablesByDatabase()
         {
-
             var t2 = g.sqlite.DbFirst.GetTablesByDatabase();
+            Assert.True(t2.Count > 0);
+        }
 
+        [Fact]
+        public void GetTableByName()
+        {
+            var fsql = g.sqlite;
+            var t1 = fsql.DbFirst.GetTableByName("tb_alltype");
+            var t2 = fsql.DbFirst.GetTableByName("main.tb_alltype");
+            Assert.NotNull(t1);
+            Assert.NotNull(t2);
+            Assert.True(t1.Columns.Count > 0);
+            Assert.True(t2.Columns.Count > 0);
+            Assert.Equal(t1.Columns.Count, t2.Columns.Count);
+            var t3 = fsql.DbFirst.GetTableByName("notexists_tb");
+            Assert.Null(t3);
         }
 
         [Fact]

FreeSql/FreeSql.xml

@@ -3121,6 +3121,22 @@
             <param name="database"></param>
             <returns></returns>
         </member>
+        <member name="M:FreeSql.IDbFirst.GetTableByName(System.String,System.Boolean)">
+            <summary>
+            获取指定单表信息，包括列详情、主键、唯一键、索引、备注
+            </summary>
+            <param name="name">表名，如：dbo.table1</param>
+            <param name="ignoreCase">是否忽略大小写</param>
+            <returns></returns>
+        </member>
+        <member name="M:FreeSql.IDbFirst.ExistsTable(System.String,System.Boolean)">
+            <summary>
+            判断表是否存在
+            </summary>
+            <param name="name">表名，如：dbo.table1</param>
+            <param name="ignoreCase">是否忽略大小写</param>
+            <returns></returns>
+        </member>
         <member name="M:FreeSql.IDbFirst.GetDbType(FreeSql.DatabaseModel.DbColumnInfo)">
             <summary>
             获取数据库枚举类型int值
@@ -3184,14 +3200,6 @@
             <param name="database"></param>
             <returns></returns>
         </member>
-        <member name="M:FreeSql.IDbFirst.ExistsTable(System.String,System.Boolean)">
-            <summary>
-            判断表是否存在
-            </summary>
-            <param name="name">表名，如：dbo.table1</param>
-            <param name="ignoreCase">是否忽略大小写</param>
-            <returns></returns>
-        </member>
         <member name="M:FreeSql.Internal.CommonProvider.InsertOrUpdateProvider`1.SplitSourceByIdentityValueIsNull(System.Collections.Generic.List{`0})">
             <summary>
             如果实体类有自增属性，分成两个 List，有值的Item1 merge，无值的Item2 insert

FreeSql/Interface/IDbFirst.cs

@@ -19,6 +19,22 @@ namespace FreeSql
         /// <returns></returns>
         List<DbTableInfo> GetTablesByDatabase(params string[] database);
 
+        /// <summary>
+        /// 获取指定单表信息，包括列详情、主键、唯一键、索引、备注
+        /// </summary>
+        /// <param name="name">表名，如：dbo.table1</param>
+        /// <param name="ignoreCase">是否忽略大小写</param>
+        /// <returns></returns>
+        DbTableInfo GetTableByName(string name, bool ignoreCase = true);
+
+        /// <summary>
+        /// 判断表是否存在
+        /// </summary>
+        /// <param name="name">表名，如：dbo.table1</param>
+        /// <param name="ignoreCase">是否忽略大小写</param>
+        /// <returns></returns>
+        bool ExistsTable(string name, bool ignoreCase = true);
+
         /// <summary>
         /// 获取数据库枚举类型int值
         /// </summary>
@@ -75,15 +91,5 @@ namespace FreeSql
         /// <param name="database"></param>
         /// <returns></returns>
         List<DbEnumInfo> GetEnumsByDatabase(params string[] database);
-
-        /// <summary>
-        /// 判断表是否存在
-        /// </summary>
-        /// <param name="name">表名，如：dbo.table1</param>
-        /// <param name="ignoreCase">是否忽略大小写</param>
-        /// <returns></returns>
-        bool ExistsTable(string name, bool ignoreCase = true);
-
-        //DbTableInfo GetTableByName(string name);
     }
 }

Providers/FreeSql.Provider.Dameng/DamengDbFirst.cs

@@ -231,21 +231,36 @@ namespace FreeSql.Dameng
             return string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, sql)) == "1";
         }
 
-        public List<DbTableInfo> GetTablesByDatabase(params string[] database2)
+        public DbTableInfo GetTableByName(string name, bool ignoreCase = true) => GetTables(null, name, ignoreCase)?.FirstOrDefault();
+        public List<DbTableInfo> GetTablesByDatabase(params string[] database) => GetTables(database, null, false);
+
+        public List<DbTableInfo> GetTables(string[] database, string tablename, bool ignoreCase)
         {
             var loc1 = new List<DbTableInfo>();
             var loc2 = new Dictionary<string, DbTableInfo>();
             var loc3 = new Dictionary<string, Dictionary<string, DbColumnInfo>>();
-            var database = database2?.ToArray();
+            string[] tbname = null;
-
+            if (string.IsNullOrEmpty(tablename) == false)
-            if (database == null || database.Any() == false)
+            {
+                tbname = _commonUtils.SplitTableName(tablename);
+                if (tbname?.Length == 1)
+                {
+                    var userUsers = _orm.Ado.ExecuteScalar(" select username from user_users")?.ToString();
+                    if (string.IsNullOrEmpty(userUsers)) return loc1;
+                    tbname = new[] { userUsers, tbname[0] };
+                }
+                if (ignoreCase) tbname = tbname.Select(a => a.ToLower()).ToArray();
+                database = new[] { tbname[0] };
+            }
+            else if (database == null || database.Any() == false)
             {
                 var userUsers = _orm.Ado.ExecuteScalar(" select username from user_users")?.ToString();
                 if (string.IsNullOrEmpty(userUsers)) return loc1;
                 database = new[] { userUsers };
             }
+
             var databaseIn = string.Join(",", database.Select(a => _commonUtils.FormatSql("{0}", a)));
-            var sql = string.Format(@"
+            var sql = $@"
 select
 a.owner || '.' || a.table_name,
 a.owner,
@@ -254,7 +269,7 @@ b.comments,
 'TABLE'
 from all_tables a
 left join all_tab_comments b on b.owner = a.owner and b.table_name = a.table_name and b.table_type = 'TABLE'
-where a.owner in ({0})", databaseIn);
+where {(ignoreCase ? "lower(a.owner)" : "a.owner")} in ({databaseIn}){(tbname == null ? "" : $" and {(ignoreCase ? "lower(a.table_name)" : "a.table_name")}={_commonUtils.FormatSql("{0}", tbname[1])}")}";
             var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
             if (ds == null) return loc1;
 
@@ -315,7 +330,7 @@ where a.owner in ({0})", databaseIn);
             }
             loc8.Append(")");
 
-            sql = string.Format(@"
+            sql = $@"
 select
 a.owner || '.' || a.table_name,
 a.column_name,
@@ -330,8 +345,8 @@ b.comments,
 a.data_default
 from all_tab_cols a
 left join all_col_comments b on b.owner = a.owner and b.table_name = a.table_name and b.column_name = a.column_name
-where a.owner in ({1}) and {0}
+where {(ignoreCase ? "lower(a.owner)" : "a.owner")} in ({databaseIn}) and {loc8}
-", loc8, databaseIn);
+";
             ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
             if (ds == null) return loc1;
 
@@ -386,7 +401,7 @@ where a.owner in ({1}) and {0}
                 loc3[table_id][column].CsType = this.GetCsTypeInfo(loc3[table_id][column]);
             }
 
-            sql = string.Format(@"
+            sql = $@"
 select
 a.table_owner || '.' || a.table_name,
 c.column_name,
@@ -401,8 +416,8 @@ all_ind_columns c
 where a.index_name = c.index_name
 and a.table_owner = c.table_owner
 and a.table_name = c.table_name
-and a.table_owner in ({1}) and {0}
+and {(ignoreCase ? "lower(a.table_owner)" : "a.table_owner")} in ({databaseIn}) and {loc8}
-", loc8, databaseIn);
+";
             ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
             if (ds == null) return loc1;
 
@@ -454,7 +469,9 @@ and a.table_owner in ({1}) and {0}
                 }
             }
 
-            sql = string.Format(@"
+            if (tbname == null)
+            {
+                sql = $@"
 select
 a.owner || '.' || a.table_name,
 c.column_name,
@@ -488,8 +505,8 @@ and a.owner = c.owner
 and a.table_name = c.table_name
 and b.owner = d.owner
 and b.table_name = d.table_name
-and a.owner in ({1}) and {0}
+and {(ignoreCase ? "lower(a.owner)" : "a.owner")} in ({databaseIn}) and {loc8}
-", loc8, databaseIn);
+";
                 ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
                 if (ds == null) return loc1;
 
@@ -525,6 +542,7 @@ and a.owner in ({1}) and {0}
                 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)
             {

Providers/FreeSql.Provider.MySql/MySqlDbFirst.cs

@@ -166,14 +166,30 @@ namespace FreeSql.MySql
             return string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, sql)) == "1";
         }
 
-        public List<DbTableInfo> GetTablesByDatabase(params string[] database2)
+        public DbTableInfo GetTableByName(string name, bool ignoreCase = true) => GetTables(null, name, ignoreCase)?.FirstOrDefault();
+        public List<DbTableInfo> GetTablesByDatabase(params string[] database) => GetTables(database, null, false);
+
+        public List<DbTableInfo> GetTables(string[] database, string tablename, bool ignoreCase)
         {
             var loc1 = new List<DbTableInfo>();
             var loc2 = new Dictionary<string, DbTableInfo>();
             var loc3 = new Dictionary<string, Dictionary<string, DbColumnInfo>>();
-            var database = database2?.ToArray();
+            string[] tbname = null;
-
+            if (string.IsNullOrEmpty(tablename) == false)
-            if (database == null || database.Any() == false)
+            {
+                tbname = _commonUtils.SplitTableName(tablename);
+                if (tbname?.Length == 1)
+                {
+                    using (var conn = _orm.Ado.MasterPool.Get(TimeSpan.FromSeconds(5)))
+                    {
+                        if (string.IsNullOrEmpty(conn.Value.Database)) return loc1;
+                        tbname = new[] { conn.Value.Database, tbname[0] };
+                    }
+                }
+                if (ignoreCase) tbname = tbname.Select(a => a.ToLower()).ToArray();
+                database = new[] { tbname[0] };
+            }
+            else if (database == null || database.Any() == false)
             {
                 using (var conn = _orm.Ado.MasterPool.Get())
                 {
@@ -181,8 +197,9 @@ namespace FreeSql.MySql
                     database = new[] { conn.Value.Database };
                 }
             }
+
             var databaseIn = string.Join(",", database.Select(a => _commonUtils.FormatSql("{0}", a)));
-            var sql = string.Format(@"
+            var sql = $@"
 select 
 concat(a.table_schema, '.', a.table_name) 'id',
 a.table_schema 'schema',
@@ -190,7 +207,7 @@ a.table_name 'table',
 a.table_comment,
 a.table_type 'type'
 from information_schema.tables a
-where a.table_schema in ({0})", databaseIn);
+where {(ignoreCase ? "lower(a.table_schema)" : "a.table_schema")} in ({databaseIn}){(tbname == null ? "" : $" and {(ignoreCase ? "lower(a.table_name)" : "a.table_name")}={_commonUtils.FormatSql("{0}", tbname[1])}")}";
             var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
             if (ds == null) return loc1;
 
@@ -251,7 +268,7 @@ where a.table_schema in ({0})", databaseIn);
             }
             loc8.Append(")");
 
-            sql = string.Format(@"
+            sql = $@"
 select
 concat(a.table_schema, '.', a.table_name),
 a.column_name,
@@ -263,8 +280,8 @@ case when locate('auto_increment', a.extra) > 0 then 1 else 0 end 'is_identity',
 a.column_comment 'comment',
 a.column_default 'default_value'
 from information_schema.columns a
-where a.table_schema in ({1}) and {0}
+where {(ignoreCase ? "lower(a.table_schema)" : "a.table_schema")} in ({databaseIn}) and {loc8}
-", loc8, databaseIn);
+";
             ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
             if (ds == null) return loc1;
 
@@ -305,7 +322,7 @@ where a.table_schema in ({1}) and {0}
                 loc3[table_id][column].CsType = this.GetCsTypeInfo(loc3[table_id][column]);
             }
 
-            sql = string.Format(@"
+            sql = $@"
 select 
 concat(a.table_schema, '.', a.table_name) 'table_id',
 a.column_name,
@@ -315,8 +332,8 @@ case when a.index_name = 'PRIMARY' then 1 else 0 end 'IsPrimaryKey',
 0 'IsClustered',
 0 'IsDesc'
 from information_schema.statistics a
-where a.table_schema in ({1}) and {0}
+where {(ignoreCase ? "lower(a.table_schema)" : "a.table_schema")} in ({databaseIn}) and {loc8}
-", loc8, databaseIn);
+";
             ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
             if (ds == null) return loc1;
 
@@ -367,7 +384,9 @@ where a.table_schema in ({1}) and {0}
                 }
             }
 
-            sql = string.Format(@"
+            if (tbname == null)
+            {
+                sql = $@"
 select 
 concat(a.constraint_schema, '.', a.table_name) 'table_id',
 a.column_name,
@@ -376,8 +395,8 @@ concat(a.referenced_table_schema, '.', a.referenced_table_name) 'ref_table_id',
 1 'IsForeignKey',
 a.referenced_column_name 'ref_column'
 from information_schema.key_column_usage a
-where a.constraint_schema in ({1}) and {0} and not isnull(position_in_unique_constraint)
+where {(ignoreCase ? "lower(a.constraint_schema)" : "a.constraint_schema")} in ({databaseIn}) and {loc8} and not isnull(position_in_unique_constraint)
-", loc8, databaseIn);
+";
                 ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
                 if (ds == null) return loc1;
 
@@ -413,6 +432,7 @@ where a.constraint_schema in ({1}) and {0} and not isnull(position_in_unique_con
                 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)
             {

Providers/FreeSql.Provider.Odbc/Dameng/OdbcDamengDbFirst.cs

@@ -231,21 +231,36 @@ namespace FreeSql.Odbc.Dameng
             return string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, sql)) == "1";
         }
 
-        public List<DbTableInfo> GetTablesByDatabase(params string[] database2)
+        public DbTableInfo GetTableByName(string name, bool ignoreCase = true) => GetTables(null, name, ignoreCase)?.FirstOrDefault();
+        public List<DbTableInfo> GetTablesByDatabase(params string[] database) => GetTables(database, null, false);
+
+        public List<DbTableInfo> GetTables(string[] database, string tablename, bool ignoreCase)
         {
             var loc1 = new List<DbTableInfo>();
             var loc2 = new Dictionary<string, DbTableInfo>();
             var loc3 = new Dictionary<string, Dictionary<string, DbColumnInfo>>();
-            var database = database2?.ToArray();
+            string[] tbname = null;
-
+            if (string.IsNullOrEmpty(tablename) == false)
-            if (database == null || database.Any() == false)
+            {
+                tbname = _commonUtils.SplitTableName(tablename);
+                if (tbname?.Length == 1)
+                {
+                    var userUsers = _orm.Ado.ExecuteScalar(" select username from user_users")?.ToString();
+                    if (string.IsNullOrEmpty(userUsers)) return loc1;
+                    tbname = new[] { userUsers, tbname[0] };
+                }
+                if (ignoreCase) tbname = tbname.Select(a => a.ToLower()).ToArray();
+                database = new[] { tbname[0] };
+            }
+            else if (database == null || database.Any() == false)
             {
                 var userUsers = _orm.Ado.ExecuteScalar(" select username from user_users")?.ToString();
                 if (string.IsNullOrEmpty(userUsers)) return loc1;
                 database = new[] { userUsers };
             }
+
             var databaseIn = string.Join(",", database.Select(a => _commonUtils.FormatSql("{0}", a)));
-            var sql = string.Format(@"
+            var sql = $@"
 select
 a.owner || '.' || a.table_name,
 a.owner,
@@ -254,7 +269,7 @@ b.comments,
 'TABLE'
 from all_tables a
 left join all_tab_comments b on b.owner = a.owner and b.table_name = a.table_name and b.table_type = 'TABLE'
-where a.owner in ({0})", databaseIn);
+where {(ignoreCase ? "lower(a.owner)" : "a.owner")} in ({databaseIn}){(tbname == null ? "" : $" and {(ignoreCase ? "lower(a.table_name)" : "a.table_name")}={_commonUtils.FormatSql("{0}", tbname[1])}")}";
             var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
             if (ds == null) return loc1;
 
@@ -315,7 +330,7 @@ where a.owner in ({0})", databaseIn);
             }
             loc8.Append(")");
 
-            sql = string.Format(@"
+            sql = $@"
 select
 a.owner || '.' || a.table_name,
 a.column_name,
@@ -330,8 +345,8 @@ b.comments,
 a.data_default
 from all_tab_cols a
 left join all_col_comments b on b.owner = a.owner and b.table_name = a.table_name and b.column_name = a.column_name
-where a.owner in ({1}) and {0}
+where {(ignoreCase ? "lower(a.owner)" : "a.owner")} in ({databaseIn}) and {loc8}
-", loc8, databaseIn);
+";
             ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
             if (ds == null) return loc1;
 
@@ -386,7 +401,7 @@ where a.owner in ({1}) and {0}
                 loc3[table_id][column].CsType = this.GetCsTypeInfo(loc3[table_id][column]);
             }
 
-            sql = string.Format(@"
+            sql = $@"
 select
 a.table_owner || '.' || a.table_name,
 c.column_name,
@@ -401,8 +416,8 @@ all_ind_columns c
 where a.index_name = c.index_name
 and a.table_owner = c.table_owner
 and a.table_name = c.table_name
-and a.table_owner in ({1}) and {0}
+and {(ignoreCase ? "lower(a.table_owner)" : "a.table_owner")} in ({databaseIn}) and {loc8}
-", loc8, databaseIn);
+";
             ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
             if (ds == null) return loc1;
 
@@ -454,7 +469,9 @@ and a.table_owner in ({1}) and {0}
                 }
             }
 
-            sql = string.Format(@"
+            if (tbname == null)
+            {
+                sql = $@"
 select
 a.owner || '.' || a.table_name,
 c.column_name,
@@ -488,8 +505,8 @@ and a.owner = c.owner
 and a.table_name = c.table_name
 and b.owner = d.owner
 and b.table_name = d.table_name
-and a.owner in ({1}) and {0}
+and {(ignoreCase ? "lower(a.owner)" : "a.owner")} in ({databaseIn}) and {loc8}
-", loc8, databaseIn);
+";
                 ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
                 if (ds == null) return loc1;
 
@@ -525,6 +542,7 @@ and a.owner in ({1}) and {0}
                 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)
             {

Providers/FreeSql.Provider.Odbc/KingbaseES/Curd/OdbcKingbaseESUpdate.cs

@@ -18,7 +18,7 @@ namespace FreeSql.Odbc.KingbaseES
         {
         }
 
-        internal string InternalTableAlias;
+        internal string InternalTableAlias { get; set; }
         internal StringBuilder InternalSbSet => _set;
         internal StringBuilder InternalSbSetIncr => _setIncr;
         internal Dictionary<string, bool> InternalIgnore => _ignore;

Providers/FreeSql.Provider.Odbc/KingbaseES/OdbcKingbaseESDbFirst.cs

@@ -116,20 +116,31 @@ namespace FreeSql.Odbc.KingbaseES
             var tbname = _commonUtils.SplitTableName(name);
             if (tbname?.Length == 1) tbname = new[] { "public", tbname[0] };
             if (ignoreCase) tbname = tbname.Select(a => a.ToLower()).ToArray();
-            var sql = $" select 1 from sys_tables a inner join sys_namespace b on b.nspname = a.schemaname where {(ignoreCase ? "lower(b.nspname)" : "b.nspname")} = {_commonUtils.FormatSql("{0}", tbname[0])} and {(ignoreCase ? "lower(a.tablename)" : "a.tablename")} = {_commonUtils.FormatSql("{0}", tbname[1])}";
+            var sql = $" select 1 from sys_tables a inner join sys_namespace b on b.nspname = a.schemaname where {(ignoreCase ? "lower(b.nspname)" : "b.nspname")}={_commonUtils.FormatSql("{0}", tbname[0])} and {(ignoreCase ? "lower(a.tablename)" : "a.tablename")}={_commonUtils.FormatSql("{0}", tbname[1])}";
             return string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, sql)) == "1";
         }
 
-        public List<DbTableInfo> GetTablesByDatabase(params string[] database)
+        public DbTableInfo GetTableByName(string name, bool ignoreCase = true) => GetTables(null, name, ignoreCase)?.FirstOrDefault();
+        public List<DbTableInfo> GetTablesByDatabase(params string[] database) => GetTables(database, null, false);
+
+        public List<DbTableInfo> GetTables(string[] database, string tablename, bool ignoreCase)
         {
             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;
+            string[] tbname = null;
-            var tables = new List<DbTableInfo>();
+            string[] dbs = database == null || database.Any() == false ? new[] { olddatabase } : database;
+            if (string.IsNullOrEmpty(tablename) == false)
+            {
+                tbname = _commonUtils.SplitTableName(tablename);
+                if (tbname?.Length == 1) tbname = new[] { "public", tbname[0] };
+                if (ignoreCase) tbname = tbname.Select(a => a.ToLower()).ToArray();
+                dbs = new[] { olddatabase };
+            }
 
+            var tables = new List<DbTableInfo>();
             foreach (var db in dbs)
             {
                 if (string.IsNullOrEmpty(db) || string.Compare(db, olddatabase, true) != 0) continue;
@@ -139,7 +150,7 @@ namespace FreeSql.Odbc.KingbaseES
                 var loc3 = new Dictionary<string, Dictionary<string, DbColumnInfo>>();
 
                 var sql = $@"
-select
+{(tbname == null ? "" : $"select * from (")}select
 b.nspname || '.' || a.tablename,
 a.schemaname,
 a.tablename ,
@@ -165,7 +176,7 @@ inner join sys_namespace b on b.oid = a.relnamespace
 left join sys_description d on d.objoid = a.oid and objsubid = 0
 where b.nspname not in ('SYS_CATALOG', 'INFORMATION_SCHEMA', 'TOPOLOGY', 'SYSAUDIT', 'SYSLOGICAL', 'SYS_TEMP_1', 'SYS_TOAST', 'SYS_TOAST_TEMP_1', 'XLOG_RECORD_READ') 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')
-";
+{(tbname == null ? "" : $") ft_dbf where {(ignoreCase ? "lower(schemaname)" : "schemaname")}={_commonUtils.FormatSql("{0}", tbname[0])} and {(ignoreCase ? "lower(tablename)" : "tablename")}={_commonUtils.FormatSql("{0}", tbname[1])}")}";
                 var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
                 if (ds == null) return loc1;
 
@@ -381,6 +392,8 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || d.relname")
                     }
                 }
 
+                if (tbname == null)
+                {
                     sql = $@"
 select
 ns.nspname || '.' || b.relname as table_id, 
@@ -431,6 +444,7 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || b.relname")
                     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)
                 {

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

@@ -132,14 +132,30 @@ namespace FreeSql.Odbc.MySql
             return string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, sql)) == "1";
         }
 
-        public List<DbTableInfo> GetTablesByDatabase(params string[] database2)
+        public DbTableInfo GetTableByName(string name, bool ignoreCase = true) => GetTables(null, name, ignoreCase)?.FirstOrDefault();
+        public List<DbTableInfo> GetTablesByDatabase(params string[] database) => GetTables(database, null, false);
+
+        public List<DbTableInfo> GetTables(string[] database, string tablename, bool ignoreCase)
         {
             var loc1 = new List<DbTableInfo>();
             var loc2 = new Dictionary<string, DbTableInfo>();
             var loc3 = new Dictionary<string, Dictionary<string, DbColumnInfo>>();
-            var database = database2?.ToArray();
+            string[] tbname = null;
-
+            if (string.IsNullOrEmpty(tablename) == false)
-            if (database == null || database.Any() == false)
+            {
+                tbname = _commonUtils.SplitTableName(tablename);
+                if (tbname?.Length == 1)
+                {
+                    using (var conn = _orm.Ado.MasterPool.Get(TimeSpan.FromSeconds(5)))
+                    {
+                        if (string.IsNullOrEmpty(conn.Value.Database)) return loc1;
+                        tbname = new[] { conn.Value.Database, tbname[0] };
+                    }
+                }
+                if (ignoreCase) tbname = tbname.Select(a => a.ToLower()).ToArray();
+                database = new[] { tbname[0] };
+            }
+            else if (database == null || database.Any() == false)
             {
                 using (var conn = _orm.Ado.MasterPool.Get())
                 {
@@ -147,8 +163,9 @@ namespace FreeSql.Odbc.MySql
                     database = new[] { conn.Value.Database };
                 }
             }
+
             var databaseIn = string.Join(",", database.Select(a => _commonUtils.FormatSql("{0}", a)));
-            var sql = string.Format(@"
+            var sql = $@"
 select 
 concat(a.table_schema, '.', a.table_name) 'id',
 a.table_schema 'schema',
@@ -156,7 +173,7 @@ a.table_name 'table',
 a.table_comment,
 a.table_type 'type'
 from information_schema.tables a
-where a.table_schema in ({0})", databaseIn);
+where {(ignoreCase ? "lower(a.table_schema)" : "a.table_schema")} in ({databaseIn}){(tbname == null ? "" : $" and {(ignoreCase ? "lower(a.table_name)" : "a.table_name")}={_commonUtils.FormatSql("{0}", tbname[1])}")}";
             var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
             if (ds == null) return loc1;
 
@@ -217,7 +234,7 @@ where a.table_schema in ({0})", databaseIn);
             }
             loc8.Append(")");
 
-            sql = string.Format(@"
+            sql = $@"
 select
 concat(a.table_schema, '.', a.table_name),
 a.column_name,
@@ -229,8 +246,8 @@ case when locate('auto_increment', a.extra) > 0 then 1 else 0 end 'is_identity',
 a.column_comment 'comment',
 a.column_default 'default_value'
 from information_schema.columns a
-where a.table_schema in ({1}) and {0}
+where {(ignoreCase ? "lower(a.table_schema)" : "a.table_schema")} in ({databaseIn}) and {loc8}
-", loc8, databaseIn);
+";
             ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
             if (ds == null) return loc1;
 
@@ -271,7 +288,7 @@ where a.table_schema in ({1}) and {0}
                 loc3[table_id][column].CsType = this.GetCsTypeInfo(loc3[table_id][column]);
             }
 
-            sql = string.Format(@"
+            sql = $@"
 select 
 concat(a.table_schema, '.', a.table_name) 'table_id',
 a.column_name,
@@ -281,8 +298,8 @@ case when a.index_name = 'PRIMARY' then 1 else 0 end 'IsPrimaryKey',
 0 'IsClustered',
 0 'IsDesc'
 from information_schema.statistics a
-where a.table_schema in ({1}) and {0}
+where {(ignoreCase ? "lower(a.table_schema)" : "a.table_schema")} in ({databaseIn}) and {loc8}
-", loc8, databaseIn);
+";
             ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
             if (ds == null) return loc1;
 
@@ -333,7 +350,9 @@ where a.table_schema in ({1}) and {0}
                 }
             }
 
-            sql = string.Format(@"
+            if (tbname == null)
+            {
+                sql = $@"
 select 
 concat(a.constraint_schema, '.', a.table_name) 'table_id',
 a.column_name,
@@ -342,8 +361,8 @@ concat(a.referenced_table_schema, '.', a.referenced_table_name) 'ref_table_id',
 1 'IsForeignKey',
 a.referenced_column_name 'ref_column'
 from information_schema.key_column_usage a
-where a.constraint_schema in ({1}) and {0} and not isnull(position_in_unique_constraint)
+where {(ignoreCase ? "lower(a.constraint_schema)" : "a.constraint_schema")} in ({databaseIn}) and {loc8} and not isnull(position_in_unique_constraint)
-", loc8, databaseIn);
+";
                 ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
                 if (ds == null) return loc1;
 
@@ -379,6 +398,7 @@ where a.constraint_schema in ({1}) and {0} and not isnull(position_in_unique_con
                 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)
             {

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

@@ -185,21 +185,36 @@ namespace FreeSql.Odbc.Oracle
             return string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, sql)) == "1";
         }
 
-        public List<DbTableInfo> GetTablesByDatabase(params string[] database2)
+        public DbTableInfo GetTableByName(string name, bool ignoreCase = true) => GetTables(null, name, ignoreCase)?.FirstOrDefault();
+        public List<DbTableInfo> GetTablesByDatabase(params string[] database) => GetTables(database, null, false);
+
+        public List<DbTableInfo> GetTables(string[] database, string tablename, bool ignoreCase)
         {
             var loc1 = new List<DbTableInfo>();
             var loc2 = new Dictionary<string, DbTableInfo>();
             var loc3 = new Dictionary<string, Dictionary<string, DbColumnInfo>>();
-            var database = database2?.ToArray();
+            string[] tbname = null;
-
+            if (string.IsNullOrEmpty(tablename) == false)
-            if (database == null || database.Any() == false)
+            {
+                tbname = _commonUtils.SplitTableName(tablename);
+                if (tbname?.Length == 1)
+                {
+                    var userUsers = _orm.Ado.ExecuteScalar(" select username from user_users")?.ToString();
+                    if (string.IsNullOrEmpty(userUsers)) return loc1;
+                    tbname = new[] { userUsers, tbname[0] };
+                }
+                if (ignoreCase) tbname = tbname.Select(a => a.ToLower()).ToArray();
+                database = new[] { tbname[0] };
+            }
+            else if (database == null || database.Any() == false)
             {
                 var userUsers = _orm.Ado.ExecuteScalar(" select username from user_users")?.ToString();
                 if (string.IsNullOrEmpty(userUsers)) return loc1;
                 database = new[] { userUsers };
             }
+
             var databaseIn = string.Join(",", database.Select(a => _commonUtils.FormatSql("{0}", a)));
-            var sql = string.Format(@"
+            var sql = $@"
 select
 a.owner || '.' || a.table_name,
 a.owner,
@@ -208,7 +223,7 @@ b.comments,
 'TABLE'
 from all_tables a
 left join all_tab_comments b on b.owner = a.owner and b.table_name = a.table_name and b.table_type = 'TABLE'
-where a.owner in ({0})", databaseIn);
+where {(ignoreCase ? "lower(a.owner)" : "a.owner")} in ({databaseIn}){(tbname == null ? "" : $" and {(ignoreCase ? "lower(a.table_name)" : "a.table_name")}={_commonUtils.FormatSql("{0}", tbname[1])}")}";
             var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
             if (ds == null) return loc1;
 
@@ -288,7 +303,7 @@ BEGIN
   RETURN TEXT_C1;
 END;");
 
-            sql = string.Format(@"
+            sql = $@"
 select
 a.owner || '.' || a.table_name,
 a.column_name,
@@ -303,8 +318,8 @@ to_char(b.comments),
 nvl(FREESQL_LONG_TO_CHAR_DEFAULT(a.table_name, a.column_name),'')
 from all_tab_cols a
 left join all_col_comments b on b.owner = a.owner and b.table_name = a.table_name and b.column_name = a.column_name
-where a.owner in ({1}) and {0}
+where {(ignoreCase ? "lower(a.owner)" : "a.owner")} in ({databaseIn}) and {loc8}
-", loc8, databaseIn);
+";
             ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
             if (ds == null) return loc1;
 
@@ -360,7 +375,7 @@ where a.owner in ({1}) and {0}
             }
 
             OdbcOracleCodeFirst.CreateOracleFunction(_orm);
-            sql = string.Format(@"
+            sql = $@"
 select
 a.table_owner || '.' || a.table_name,
 nvl(freesql_long_2_varchar(a.index_name, c.table_name, c.column_position), c.column_name),
@@ -375,8 +390,8 @@ all_ind_columns c
 where a.index_name = c.index_name
 and a.table_owner = c.table_owner
 and a.table_name = c.table_name
-and a.table_owner in ({1}) and {0}
+and {(ignoreCase ? "lower(a.table_owner)" : "a.table_owner")} in ({databaseIn}) and {loc8}
-", loc8, databaseIn);
+";
             ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
             if (ds == null) return loc1;
 
@@ -428,7 +443,9 @@ and a.table_owner in ({1}) and {0}
                 }
             }
 
-            sql = string.Format(@"
+            if (tbname == null)
+            {
+                sql = $@"
 select
 a.owner || '.' || a.table_name,
 c.column_name,
@@ -462,8 +479,8 @@ and a.owner = c.owner
 and a.table_name = c.table_name 　　
 and b.owner = d.owner 　　
 and b.table_name = d.table_name
-and a.owner in ({1}) and {0}
+and {(ignoreCase ? "lower(a.owner)" : "a.owner")} in ({databaseIn}) and {loc8}
-", loc8, databaseIn);
+";
                 ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
                 if (ds == null) return loc1;
 
@@ -499,6 +516,7 @@ and a.owner in ({1}) and {0}
                 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)
             {

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

@@ -18,7 +18,7 @@ namespace FreeSql.Odbc.PostgreSQL
         {
         }
 
-        internal string InternalTableAlias;
+        internal string InternalTableAlias { get; set; }
         internal StringBuilder InternalSbSet => _set;
         internal StringBuilder InternalSbSetIncr => _setIncr;
         internal Dictionary<string, bool> InternalIgnore => _ignore;

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

@@ -128,11 +128,14 @@ namespace FreeSql.Odbc.PostgreSQL
             var tbname = _commonUtils.SplitTableName(name);
             if (tbname?.Length == 1) tbname = new[] { "public", tbname[0] };
             if (ignoreCase) tbname = tbname.Select(a => a.ToLower()).ToArray();
-            var sql = $" select 1 from pg_tables a inner join pg_namespace b on b.nspname = a.schemaname where {(ignoreCase ? "lower(b.nspname)" : "b.nspname")} = {_commonUtils.FormatSql("{0}", tbname[0])} and {(ignoreCase ? "lower(a.tablename)" : "a.tablename")} = {_commonUtils.FormatSql("{0}", tbname[1])}";
+            var sql = $" select 1 from pg_tables a inner join pg_namespace b on b.nspname = a.schemaname where {(ignoreCase ? "lower(b.nspname)" : "b.nspname")}={_commonUtils.FormatSql("{0}", tbname[0])} and {(ignoreCase ? "lower(a.tablename)" : "a.tablename")}={_commonUtils.FormatSql("{0}", tbname[1])}";
             return string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, sql)) == "1";
         }
 
-        public List<DbTableInfo> GetTablesByDatabase(params string[] database)
+        public DbTableInfo GetTableByName(string name, bool ignoreCase = true) => GetTables(null, name, ignoreCase)?.FirstOrDefault();
+        public List<DbTableInfo> GetTablesByDatabase(params string[] database) => GetTables(database, null, false);
+
+        public List<DbTableInfo> GetTables(string[] database, string tablename, bool ignoreCase)
         {
             var olddatabase = "";
             var is96 = true;
@@ -141,7 +144,15 @@ namespace FreeSql.Odbc.PostgreSQL
                 olddatabase = conn.Value.Database;
                 is96 = PgVersionIs96(conn.Value.ServerVersion);
             }
-            var dbs = database == null || database.Any() == false ? new[] { olddatabase } : database;
+            string[] tbname = null;
+            string[] dbs = database == null || database.Any() == false ? new[] { olddatabase } : database;
+            if (string.IsNullOrEmpty(tablename) == false)
+            {
+                tbname = _commonUtils.SplitTableName(tablename);
+                if (tbname?.Length == 1) tbname = new[] { "public", tbname[0] };
+                if (ignoreCase) tbname = tbname.Select(a => a.ToLower()).ToArray();
+                dbs = new[] { olddatabase };
+            }
             var tables = new List<DbTableInfo>();
 
             foreach (var db in dbs)
@@ -153,7 +164,7 @@ namespace FreeSql.Odbc.PostgreSQL
                 var loc3 = new Dictionary<string, Dictionary<string, DbColumnInfo>>();
 
                 var sql = $@"
-select
+{(tbname == null ? "" : $"select * from (")}select
 b.nspname || '.' || a.tablename,
 a.schemaname,
 a.tablename ,
@@ -179,7 +190,7 @@ 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')
-";
+{(tbname == null ? "" : $") ft_dbf where {(ignoreCase ? "lower(schemaname)" : "schemaname")}={_commonUtils.FormatSql("{0}", tbname[0])} and {(ignoreCase ? "lower(tablename)" : "tablename")}={_commonUtils.FormatSql("{0}", tbname[1])}")}";
                 var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
                 if (ds == null) return loc1;
 
@@ -396,6 +407,8 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || d.relname")
                     }
                 }
 
+                if (tbname == null)
+                {
                     sql = $@"
 select
 ns.nspname || '.' || b.relname as table_id, 
@@ -446,6 +459,7 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || b.relname")
                     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)
                 {

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

@@ -7,7 +7,6 @@ using System.Data;
 using System.Data.Odbc;
 using System.Linq;
 using System.Text;
-using System.Text.RegularExpressions;
 
 namespace FreeSql.Odbc.SqlServer
 {
@@ -125,21 +124,32 @@ select
 1
 from sys.tables a
 inner join sys.schemas b on b.schema_id = a.schema_id
-where lower(b.name) = {_commonUtils.FormatSql("{0}", tbname[1])} and lower(a.name) = {_commonUtils.FormatSql("{0}", tbname[2])}
+where lower(b.name)={_commonUtils.FormatSql("{0}", tbname[1])} and lower(a.name)={_commonUtils.FormatSql("{0}", tbname[2])}
 ;
 use [{olddatabase}];
 ";
             return string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, sql)) == "1";
         }
+        public DbTableInfo GetTableByName(string name, bool ignoreCase = true) => GetTables(null, name, ignoreCase)?.FirstOrDefault();
+        public List<DbTableInfo> GetTablesByDatabase(params string[] database) => GetTables(database, null, false);
 
-        public List<DbTableInfo> GetTablesByDatabase(params string[] database)
+        public List<DbTableInfo> GetTables(string[] database, string tablename, bool ignoreCase)
         {
             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;
+            string[] tbname = null;
+            string[] dbs = database == null || database.Any() == false ? new[] { olddatabase } : database;
+            if (string.IsNullOrEmpty(tablename) == false)
+            {
+                tbname = _commonUtils.SplitTableName(tablename);
+                if (tbname?.Length == 1) tbname = new[] { olddatabase, "dbo", tbname[0] };
+                if (tbname?.Length == 2) tbname = new[] { olddatabase, tbname[0], tbname[1] };
+                tbname = tbname.Select(a => a.ToLower()).ToArray();
+                dbs = new[] { tbname[0] };
+            }
             var tables = new List<DbTableInfo>();
 
             foreach (var db in dbs)
@@ -152,6 +162,7 @@ use [{olddatabase}];
 
                 var sql = $@"
 use [{db}];
+select * from (
 select 
  a.Object_id
 ,b.name 'Owner'
@@ -180,8 +191,8 @@ select
 from sys.procedures a
 inner join sys.schemas b on b.schema_id = a.schema_id
 where a.type = 'P' and charindex('diagram', a.name) = 0
-order by type desc, b.name, a.name
+) ft_dbf{(tbname == null ? "" : _commonUtils.FormatSql(" where lower([owner])={0} and lower([Name])={1}", new[] { tbname[1], tbname[2] }))}
-;
+order by type desc, [owner], [Name];
 use [{olddatabase}];
 ";
                 var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
@@ -264,7 +275,7 @@ isnull(e.name,'') + '.' + isnull(d.name,'')
   else cast(a.max_length as varchar) end + ')'
  when b.name in ('Numeric', 'Decimal') then '(' + cast(a.precision as varchar) + ',' + cast(a.scale as varchar) + ')'
  else '' end as 'SqlType'
-,(select value from sys.extended_properties where major_id = a.object_id AND minor_id = a.column_id AND name = 'MS_Description') 'Comment'
+,( select value from sys.extended_properties where major_id = a.object_id AND minor_id = a.column_id AND name = 'MS_Description') 'Comment'
 {0} a
 inner join sys.types b on b.user_type_id = a.user_type_id
 left join sys.tables d on d.object_id = a.object_id
@@ -392,6 +403,8 @@ use [{olddatabase}];
                     }
                 }
 
+                if (tbname == null)
+                {
                     sql = $@"
 use [{db}];
 select 
@@ -453,6 +466,7 @@ use [{olddatabase}];
                     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)
                 {

Providers/FreeSql.Provider.Oracle/OracleDbFirst.cs

@@ -185,21 +185,36 @@ namespace FreeSql.Oracle
             return string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, sql)) == "1";
         }
 
-        public List<DbTableInfo> GetTablesByDatabase(params string[] database2)
+        public DbTableInfo GetTableByName(string name, bool ignoreCase = true) => GetTables(null, name, ignoreCase)?.FirstOrDefault();
+        public List<DbTableInfo> GetTablesByDatabase(params string[] database) => GetTables(database, null, false);
+
+        public List<DbTableInfo> GetTables(string[] database, string tablename, bool ignoreCase)
         {
             var loc1 = new List<DbTableInfo>();
             var loc2 = new Dictionary<string, DbTableInfo>();
             var loc3 = new Dictionary<string, Dictionary<string, DbColumnInfo>>();
-            var database = database2?.ToArray();
+            string[] tbname = null;
-
+            if (string.IsNullOrEmpty(tablename) == false)
-            if (database == null || database.Any() == false)
+            {
+                tbname = _commonUtils.SplitTableName(tablename);
+                if (tbname?.Length == 1)
+                {
+                    var userUsers = _orm.Ado.ExecuteScalar(" select username from user_users")?.ToString();
+                    if (string.IsNullOrEmpty(userUsers)) return loc1;
+                    tbname = new[] { userUsers, tbname[0] };
+                }
+                if (ignoreCase) tbname = tbname.Select(a => a.ToLower()).ToArray();
+                database = new[] { tbname[0] };
+            }
+            else if (database == null || database.Any() == false)
             {
                 var userUsers = _orm.Ado.ExecuteScalar(" select username from user_users")?.ToString();
                 if (string.IsNullOrEmpty(userUsers)) return loc1;
                 database = new[] { userUsers };
             }
+
             var databaseIn = string.Join(",", database.Select(a => _commonUtils.FormatSql("{0}", a)));
-            var sql = string.Format(@"
+            var sql = $@"
 select
 a.owner || '.' || a.table_name,
 a.owner,
@@ -208,7 +223,7 @@ b.comments,
 'TABLE'
 from all_tables a
 left join all_tab_comments b on b.owner = a.owner and b.table_name = a.table_name and b.table_type = 'TABLE'
-where a.owner in ({0})", databaseIn);
+where {(ignoreCase ? "lower(a.owner)" : "a.owner")} in ({databaseIn}){(tbname == null ? "" : $" and {(ignoreCase ? "lower(a.table_name)" : "a.table_name")}={_commonUtils.FormatSql("{0}", tbname[1])}")}";
             var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
             if (ds == null) return loc1;
 
@@ -288,7 +303,7 @@ BEGIN
   RETURN TEXT_C1;
 END;");
 
-            sql = string.Format(@"
+            sql = $@"
 select
 a.owner || '.' || a.table_name,
 a.column_name,
@@ -303,8 +318,8 @@ to_char(b.comments),
 nvl(FREESQL_LONG_TO_CHAR_DEFAULT(a.table_name, a.column_name),'')
 from all_tab_cols a
 left join all_col_comments b on b.owner = a.owner and b.table_name = a.table_name and b.column_name = a.column_name
-where a.owner in ({1}) and {0}
+where {(ignoreCase ? "lower(a.owner)" : "a.owner")} in ({databaseIn}) and {loc8}
-", loc8, databaseIn);
+";
             ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
             if (ds == null) return loc1;
 
@@ -360,7 +375,7 @@ where a.owner in ({1}) and {0}
             }
 
             OracleCodeFirst.CreateOracleFunction(_orm);
-            sql = string.Format(@"
+            sql = $@"
 select
 a.table_owner || '.' || a.table_name,
 nvl(freesql_long_2_varchar(a.index_name, c.table_name, c.column_position), c.column_name),
@@ -375,8 +390,8 @@ all_ind_columns c
 where a.index_name = c.index_name
 and a.table_owner = c.table_owner
 and a.table_name = c.table_name
-and a.table_owner in ({1}) and {0}
+and {(ignoreCase ? "lower(a.table_owner)" : "a.table_owner")} in ({databaseIn}) and {loc8}
-", loc8, databaseIn);
+";
             ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
             if (ds == null) return loc1;
 
@@ -428,7 +443,9 @@ and a.table_owner in ({1}) and {0}
                 }
             }
 
-            sql = string.Format(@"
+            if (tbname == null)
+            {
+                sql = $@"
 select
 a.owner || '.' || a.table_name,
 c.column_name,
@@ -462,8 +479,8 @@ and a.owner = c.owner
 and a.table_name = c.table_name 　　
 and b.owner = d.owner 　　
 and b.table_name = d.table_name
-and a.owner in ({1}) and {0}
+and {(ignoreCase ? "lower(a.owner)" : "a.owner")} in ({databaseIn}) and {loc8}
-", loc8, databaseIn);
+";
                 ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
                 if (ds == null) return loc1;
 
@@ -499,6 +516,7 @@ and a.owner in ({1}) and {0}
                 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)
             {

Providers/FreeSql.Provider.PostgreSQL/Curd/PostgreSQLUpdate.cs

@@ -18,7 +18,7 @@ namespace FreeSql.PostgreSQL.Curd
         {
         }
 
-        internal string InternalTableAlias;
+        internal string InternalTableAlias { get; set; }
         internal StringBuilder InternalSbSet => _set;
         internal StringBuilder InternalSbSetIncr => _setIncr;
         internal Dictionary<string, bool> InternalIgnore => _ignore;

Providers/FreeSql.Provider.PostgreSQL/PostgreSQLDbFirst.cs

@@ -238,11 +238,14 @@ namespace FreeSql.PostgreSQL
             var tbname = _commonUtils.SplitTableName(name);
             if (tbname?.Length == 1) tbname = new[] { "public", tbname[0] };
             if (ignoreCase) tbname = tbname.Select(a => a.ToLower()).ToArray();
-            var sql = $" select 1 from pg_tables a inner join pg_namespace b on b.nspname = a.schemaname where {(ignoreCase ? "lower(b.nspname)" : "b.nspname")} = {_commonUtils.FormatSql("{0}", tbname[0])} and {(ignoreCase ? "lower(a.tablename)" : "a.tablename")} = {_commonUtils.FormatSql("{0}", tbname[1])}";
+            var sql = $" select 1 from pg_tables a inner join pg_namespace b on b.nspname = a.schemaname where {(ignoreCase ? "lower(b.nspname)" : "b.nspname")}={_commonUtils.FormatSql("{0}", tbname[0])} and {(ignoreCase ? "lower(a.tablename)" : "a.tablename")}={_commonUtils.FormatSql("{0}", tbname[1])}";
             return string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, sql)) == "1";
         }
 
-        public List<DbTableInfo> GetTablesByDatabase(params string[] database)
+        public DbTableInfo GetTableByName(string name, bool ignoreCase = true) => GetTables(null, name, ignoreCase)?.FirstOrDefault();
+        public List<DbTableInfo> GetTablesByDatabase(params string[] database) => GetTables(database, null, false);
+
+        public List<DbTableInfo> GetTables(string[] database, string tablename, bool ignoreCase)
         {
             var olddatabase = "";
             var is96 = true;
@@ -251,7 +254,15 @@ namespace FreeSql.PostgreSQL
                 olddatabase = conn.Value.Database;
                 is96 = PgVersionIs96(conn.Value.ServerVersion);
             }
-            var dbs = database == null || database.Any() == false ? new[] { olddatabase } : database;
+            string[] tbname = null;
+            string[] dbs = database == null || database.Any() == false ? new[] { olddatabase } : database;
+            if (string.IsNullOrEmpty(tablename) == false)
+            {
+                tbname = _commonUtils.SplitTableName(tablename);
+                if (tbname?.Length == 1) tbname = new[] { "public", tbname[0] };
+                if (ignoreCase) tbname = tbname.Select(a => a.ToLower()).ToArray();
+                dbs = new[] { olddatabase };
+            }
             var tables = new List<DbTableInfo>();
 
             foreach (var db in dbs)
@@ -263,7 +274,7 @@ namespace FreeSql.PostgreSQL
                 var loc3 = new Dictionary<string, Dictionary<string, DbColumnInfo>>();
 
                 var sql = $@"
-select
+{(tbname == null ? "" : $"select * from (")}select
 b.nspname || '.' || a.tablename,
 a.schemaname,
 a.tablename ,
@@ -289,7 +300,7 @@ 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')
-";
+{(tbname == null ? "" : $") ft_dbf where {(ignoreCase ? "lower(schemaname)" : "schemaname")}={_commonUtils.FormatSql("{0}", tbname[0])} and {(ignoreCase ? "lower(tablename)" : "tablename")}={_commonUtils.FormatSql("{0}", tbname[1])}")}";
                 var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
                 if (ds == null) return loc1;
 
@@ -506,6 +517,8 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || d.relname")
                     }
                 }
 
+                if (tbname == null)
+                {
                     sql = $@"
 select
 ns.nspname || '.' || b.relname as table_id, 
@@ -556,6 +569,7 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || b.relname")
                     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)
                 {

Providers/FreeSql.Provider.ShenTong/Curd/ShenTongUpdate.cs

@@ -19,7 +19,7 @@ namespace FreeSql.ShenTong.Curd
         {
         }
 
-        internal string InternalTableAlias;
+        internal string InternalTableAlias { get; set; }
         internal StringBuilder InternalSbSet => _set;
         internal StringBuilder InternalSbSetIncr => _setIncr;
         internal Dictionary<string, bool> InternalIgnore => _ignore;

Providers/FreeSql.Provider.ShenTong/ShenTongDbFirst.cs

@@ -134,19 +134,30 @@ select
 1
 from sys_class a
 inner join sys_namespace b on b.oid = a.relnamespace
-where {(ignoreCase ? "lower(b.nspname)" : "b.nspname")} = {_commonUtils.FormatSql("{0}", tbname[0])} and {(ignoreCase ? "lower(a.relname)" : "a.relname")} = {_commonUtils.FormatSql("{0}", tbname[1])} and a.relkind in ('r')
+where {(ignoreCase ? "lower(b.nspname)" : "b.nspname")}={_commonUtils.FormatSql("{0}", tbname[0])} and {(ignoreCase ? "lower(a.relname)" : "a.relname")}={_commonUtils.FormatSql("{0}", tbname[1])} and a.relkind in ('r')
 ";
             return string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, sql)) == "1";
         }
 
-        public List<DbTableInfo> GetTablesByDatabase(params string[] database)
+        public DbTableInfo GetTableByName(string name, bool ignoreCase = true) => GetTables(null, name, ignoreCase)?.FirstOrDefault();
+        public List<DbTableInfo> GetTablesByDatabase(params string[] database) => GetTables(database, null, false);
+
+        public List<DbTableInfo> GetTables(string[] database, string tablename, bool ignoreCase)
         {
             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;
+            string[] tbname = null;
+            string[] dbs = database == null || database.Any() == false ? new[] { olddatabase } : database;
+            if (string.IsNullOrEmpty(tablename) == false)
+            {
+                tbname = _commonUtils.SplitTableName(tablename);
+                if (tbname?.Length == 1) tbname = new[] { "PUBLIC", tbname[0] };
+                if (ignoreCase) tbname = tbname.Select(a => a.ToLower()).ToArray();
+                dbs = new[] { olddatabase };
+            }
             var tables = new List<DbTableInfo>();
 
             foreach (var db in dbs)
@@ -158,7 +169,7 @@ where {(ignoreCase ? "lower(b.nspname)" : "b.nspname")} = {_commonUtils.FormatSq
                 var loc3 = new Dictionary<string, Dictionary<string, DbColumnInfo>>();
 
                 var sql = $@"
-select
+{(tbname == null ? "" : $"select * from (")}select
 b.nspname || '.' || a.relname,
 b.nspname,
 a.relname,
@@ -183,7 +194,7 @@ inner join sys_namespace b on b.oid = a.relnamespace
 left join sys_description d on d.objoid = a.oid and objsubid = 0
 where b.nspname not in ('DIRECTORIES', 'INFO_SCHEM', 'REPLICATION', 'STAGENT', 'SYSAUDIT', 'SYSDBA', 'SYSFTSDBA', 'SYSSECURE', 'SYS_GLOBAL_TEMP', 'WMSYS') 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','PUBLIC.DBA_JOBS')
-";
+{(tbname == null ? "" : $") ft_dbf where {(ignoreCase ? "lower(nspname)" : "nspname")}={_commonUtils.FormatSql("{0}", tbname[0])} and {(ignoreCase ? "lower(relname)" : "relname")}={_commonUtils.FormatSql("{0}", tbname[1])}")}";
                 var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
                 if (ds == null) return loc1;
 
@@ -400,6 +411,8 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || d.relname")
                     }
                 }
 
+                if (tbname == null)
+                {
                     sql = $@"
 select
 a.pktable_schem || '.' || a.pktable_name,
@@ -441,6 +454,7 @@ where {loc8.ToString().Replace("a.table_name", "a.pktable_schem || '.' || a.pkta
                     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)
                 {

Providers/FreeSql.Provider.SqlServer/SqlServerDbFirst.cs

@@ -6,7 +6,6 @@ using System.Collections.Generic;
 using System.Data;
 using System.Linq;
 using System.Text;
-using System.Text.RegularExpressions;
 
 namespace FreeSql.SqlServer
 {
@@ -128,21 +127,32 @@ select
 1
 from sys.tables a
 inner join sys.schemas b on b.schema_id = a.schema_id
-where lower(b.name) = {_commonUtils.FormatSql("{0}", tbname[1])} and lower(a.name) = {_commonUtils.FormatSql("{0}", tbname[2])}
+where lower(b.name)={_commonUtils.FormatSql("{0}", tbname[1])} and lower(a.name)={_commonUtils.FormatSql("{0}", tbname[2])}
 ;
 use [{olddatabase}];
 ";
             return string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, sql)) == "1";
         }
+        public DbTableInfo GetTableByName(string name, bool ignoreCase = true) => GetTables(null, name, ignoreCase)?.FirstOrDefault();
+        public List<DbTableInfo> GetTablesByDatabase(params string[] database) => GetTables(database, null, false);
 
-        public List<DbTableInfo> GetTablesByDatabase(params string[] database)
+        public List<DbTableInfo> GetTables(string[] database, string tablename, bool ignoreCase)
         {
             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;
+            string[] tbname = null;
+            string[] dbs = database == null || database.Any() == false ? new[] { olddatabase } : database;
+            if (string.IsNullOrEmpty(tablename) == false)
+            {
+                tbname = _commonUtils.SplitTableName(tablename);
+                if (tbname?.Length == 1) tbname = new[] { olddatabase, "dbo", tbname[0] };
+                if (tbname?.Length == 2) tbname = new[] { olddatabase, tbname[0], tbname[1] };
+                tbname = tbname.Select(a => a.ToLower()).ToArray();
+                dbs = new[] { tbname[0] };
+            }
             var tables = new List<DbTableInfo>();
 
             foreach (var db in dbs)
@@ -155,6 +165,7 @@ use [{olddatabase}];
 
                 var sql = $@"
 use [{db}];
+select * from (
 select 
  a.Object_id
 ,b.name 'Owner'
@@ -183,8 +194,8 @@ select
 from sys.procedures a
 inner join sys.schemas b on b.schema_id = a.schema_id
 where a.type = 'P' and charindex('diagram', a.name) = 0
-order by type desc, b.name, a.name
+) ft_dbf{(tbname == null ? "" : _commonUtils.FormatSql(" where lower([owner])={0} and lower([Name])={1}", new[] { tbname[1], tbname[2] }))}
-;
+order by type desc, [owner], [Name];
 use [{olddatabase}];
 ";
                 var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
@@ -395,6 +406,8 @@ use [{olddatabase}];
                     }
                 }
 
+                if (tbname == null)
+                {
                     sql = $@"
 use [{db}];
 select 
@@ -456,6 +469,7 @@ use [{olddatabase}];
                     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)
                 {

Providers/FreeSql.Provider.Sqlite/SqliteDbFirst.cs

@@ -155,18 +155,28 @@ namespace FreeSql.Sqlite
             var tbname = _commonUtils.SplitTableName(name);
             if (tbname?.Length == 1) tbname = new[] { "main", tbname[0] };
             if (ignoreCase) tbname = tbname.Select(a => a.ToLower()).ToArray();
-            var sql = $@" select 1 from {_commonUtils.QuoteSqlName(tbname[0])}.sqlite_master where type = 'table' and {(ignoreCase ? "lower(tbl_name)" : "tbl_name")} = {_commonUtils.FormatSql("{0}", tbname[1])}";
+            var sql = $@" select 1 from {_commonUtils.QuoteSqlName(tbname[0])}.sqlite_master where type='table' and {(ignoreCase ? "lower(tbl_name)" : "tbl_name")}={_commonUtils.FormatSql("{0}", tbname[1])}";
             return string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, sql)) == "1";
         }
 
-        public List<DbTableInfo> GetTablesByDatabase(params string[] database2)
+        public DbTableInfo GetTableByName(string name, bool ignoreCase = true) => GetTables(null, name, ignoreCase)?.FirstOrDefault();
+        public List<DbTableInfo> GetTablesByDatabase(params string[] database) => GetTables(database, null, false);
+
+        public List<DbTableInfo> GetTables(string[] database, string tablename, bool ignoreCase)
         {
             var loc1 = new List<DbTableInfo>();
             var loc2 = new Dictionary<string, DbTableInfo>();
             var loc3 = new Dictionary<string, Dictionary<string, DbColumnInfo>>();
-            var database = database2?.ToArray();
+            string[] tbname = null;
-
+            if (string.IsNullOrEmpty(tablename) == false)
-            if (database == null || database.Any() == false) database = GetDatabases().ToArray();
+            {
+                tbname = _commonUtils.SplitTableName(tablename);
+                if (tbname?.Length == 1) tbname = new[] { "main", tbname[0] };
+                if (ignoreCase) tbname = tbname.Select(a => a.ToLower()).ToArray();
+                database = new[] { tbname[0] };
+            }
+            else if (database == null || database.Any() == false)
+                database = GetDatabases().ToArray();
             if (database.Any() == false) return loc1;
 
             Action<object[], int> addColumn = (row, position) =>
@@ -212,7 +222,7 @@ tbl_name,
 '' Comment,
 'TABLE',
 sql
-from {db}.sqlite_master where type = 'table'";
+from {db}.sqlite_master where type='table'{(tbname == null ? "" : $" and {(ignoreCase ? "lower(tbl_name)" : "tbl_name")}={_commonUtils.FormatSql("{0}", tbname[1])}")}";
                 var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
                 if (ds == null) continue;
 
@@ -284,6 +294,8 @@ from {db}.sqlite_master where type = 'table'";
                             addColumn(ds2item, ++position);
                         }
 
+                        if (tbname == null)
+                        {
                             var fks = _orm.Ado.ExecuteArray(CommandType.Text, $"PRAGMA \"{db}\".foreign_key_list(\"{table}\")");
                             if (fks != null && fks.Length > 0)
                             {
@@ -315,6 +327,7 @@ from {db}.sqlite_master where type = 'table'";
                             }
                         }
                     }
+                }
                 if (loc6_1000.Count > 0) loc6.Add(loc6_1000.ToArray());
                 if (loc66_1000.Count > 0) loc66.Add(loc66_1000.ToArray());