diff --git a/FreeSql.DbContext/FreeSql.DbContext.xml b/FreeSql.DbContext/FreeSql.DbContext.xml
index 65c54b71..e76e3740 100644
--- a/FreeSql.DbContext/FreeSql.DbContext.xml
+++ b/FreeSql.DbContext/FreeSql.DbContext.xml
@@ -125,6 +125,13 @@
             清空状态数据
             </summary>
         </member>
+        <member name="M:FreeSql.DbSet`1.RemoveAsync(System.Linq.Expressions.Expression{System.Func{`0,System.Boolean}})">
+            <summary>
+            根据 lambda 条件删除数据
+            </summary>
+            <param name="predicate"></param>
+            <returns></returns>
+        </member>
         <member name="M:FreeSql.DbSet`1.Add(`0)">
             <summary>
             添加
@@ -513,5 +520,14 @@
             <param name="that"></param>
             <returns></returns>
         </member>
+        <member name="M:Microsoft.Extensions.DependencyInjection.FreeSqlRepositoryDependencyInjection.AddFreeRepository(Microsoft.Extensions.DependencyInjection.IServiceCollection,System.Action{FreeSql.FluentDataFilter},System.Reflection.Assembly[])">
+            <summary>
+            批量注入 Repository，可以参考代码自行调整
+            </summary>
+            <param name="services"></param>
+            <param name="globalDataFilter"></param>
+            <param name="assemblies"></param>
+            <returns></returns>
+        </member>
     </members>
 </doc>
diff --git a/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/PostgreSQLDbFirstTest.cs b/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/PostgreSQLDbFirstTest.cs
index e32c5ffb..1abfd208 100644
--- a/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/PostgreSQLDbFirstTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/PostgreSQL/PostgreSQLDbFirstTest.cs
@@ -1,5 +1,6 @@
 using FreeSql.DataAnnotations;
 using System;
+using System.Linq;
 using Xunit;
 
 namespace FreeSql.Tests.Odbc.PostgreSQL
@@ -20,6 +21,9 @@ namespace FreeSql.Tests.Odbc.PostgreSQL
 
             var t2 = g.pgsql.DbFirst.GetTablesByDatabase(g.pgsql.DbFirst.GetDatabases()[2]);
 
+            var tb_alltype = t2.Where(a => a.Name == "tb_alltype").FirstOrDefault();
+
+            var tb_identity = t2.Where(a => a.Name == "test_new").FirstOrDefault();
         }
     }
 }
diff --git a/FreeSql.Tests/FreeSql.Tests/PostgreSQL/PostgreSQLDbFirstTest.cs b/FreeSql.Tests/FreeSql.Tests/PostgreSQL/PostgreSQLDbFirstTest.cs
index 9bd86da7..a41e6896 100644
--- a/FreeSql.Tests/FreeSql.Tests/PostgreSQL/PostgreSQLDbFirstTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests/PostgreSQL/PostgreSQLDbFirstTest.cs
@@ -23,6 +23,8 @@ namespace FreeSql.Tests.PostgreSQL
 
             var tb_alltype = t2.Where(a => a.Name == "tb_alltype").FirstOrDefault();
 
+            var tb_identity = t2.Where(a => a.Name == "test_new").FirstOrDefault();
+
         }
     }
 }
diff --git a/Providers/FreeSql.Provider.Odbc/KingbaseES/OdbcKingbaseESCodeFirst.cs b/Providers/FreeSql.Provider.Odbc/KingbaseES/OdbcKingbaseESCodeFirst.cs
index a174427c..1bdb9b64 100644
--- a/Providers/FreeSql.Provider.Odbc/KingbaseES/OdbcKingbaseESCodeFirst.cs
+++ b/Providers/FreeSql.Provider.Odbc/KingbaseES/OdbcKingbaseESCodeFirst.cs
@@ -215,7 +215,7 @@ where ns.nspname = {0} and c.relname = {1}", tboldname ?? tbname);
                         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)"),
+                        is_identity = string.Concat(a[5]).StartsWith(@"NEXTVAL('") && (string.Concat(a[5]).EndsWith(@"'::REGCLASS)") || string.Concat(a[5]).EndsWith(@"')")),
                         attndims,
                         comment = string.Concat(a[7])
                     };
diff --git a/Providers/FreeSql.Provider.Odbc/KingbaseES/OdbcKingbaseESDbFirst.cs b/Providers/FreeSql.Provider.Odbc/KingbaseES/OdbcKingbaseESDbFirst.cs
index 62156ec7..cd15ba6a 100644
--- a/Providers/FreeSql.Provider.Odbc/KingbaseES/OdbcKingbaseESDbFirst.cs
+++ b/Providers/FreeSql.Provider.Odbc/KingbaseES/OdbcKingbaseESDbFirst.cs
@@ -247,7 +247,7 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || c.relname")
                     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 is_identity = string.Concat(row[6]).StartsWith(@"NEXTVAL('") && (string.Concat(row[6]).EndsWith(@"'::REGCLASS)") || string.Concat(row[6]).EndsWith(@"')"));
                     var comment = string.Concat(row[7]);
                     var defaultValue = string.Concat(row[6]);
                     int attndims = int.Parse(string.Concat(row[8]));
diff --git a/Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLCodeFirst.cs b/Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLCodeFirst.cs
index 22df7fb2..9f9b0d50 100644
--- a/Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLCodeFirst.cs
+++ b/Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLCodeFirst.cs
@@ -227,7 +227,7 @@ where ns.nspname = {0} and c.relname = {1}", tboldname ?? tbname);
                         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)"),
+                        is_identity = string.Concat(a[5]).StartsWith(@"nextval('") && (string.Concat(a[5]).EndsWith(@"'::regclass)") || string.Concat(a[5]).EndsWith(@"')")),
                         attndims,
                         comment = string.Concat(a[7])
                     };
diff --git a/Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLDbFirst.cs b/Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLDbFirst.cs
index 52400443..1da4d276 100644
--- a/Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLDbFirst.cs
+++ b/Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLDbFirst.cs
@@ -23,6 +23,28 @@ namespace FreeSql.Odbc.PostgreSQL
             _commonExpression = commonExpression;
         }
 
+        public bool IsPg10 => ServerVersion >= 10;
+        public int ServerVersion
+        {
+            get
+            {
+                if (_ServerVersionValue == 0 && _orm.Ado.MasterPool != null)
+                    using (var conn = _orm.Ado.MasterPool.Get())
+                    {
+                        try
+                        {
+                            _ServerVersionValue = int.Parse(conn.Value.ServerVersion.Split('.')[0]);
+                        }
+                        catch
+                        {
+                            _ServerVersionValue = 9;
+                        }
+                    }
+                return _ServerVersionValue;
+            }
+        }
+        int _ServerVersionValue = 0;
+
         public int GetDbType(DbColumnInfo column) => (int)GetOdbcType(column);
         OdbcType GetOdbcType(DbColumnInfo column)
         {
@@ -217,7 +239,7 @@ d.description as comment,
 a.attndims,
 case when t.typelem = 0 then t.typtype else t2.typtype end,
 ns2.nspname,
-a.attnum
+a.attnum{(IsPg10 ? ", a.attidentity" : "")}
 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
@@ -239,7 +261,8 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || c.relname")
                     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 is_identity = string.Concat(row[6]).StartsWith(@"nextval('") && (string.Concat(row[6]).EndsWith(@"'::regclass)") || string.Concat(row[6]).EndsWith(@"')"))
+                        || IsPg10 && new[] { "a", "d" }.Contains(string.Concat(row[12])); //pg10 GENERATED { BY DEFAULT | AWAYS } AS IDENTITY
                     var comment = string.Concat(row[7]);
                     var defaultValue = string.Concat(row[6]);
                     int attndims = int.Parse(string.Concat(row[8]));
diff --git a/Providers/FreeSql.Provider.PostgreSQL/PostgreSQLCodeFirst.cs b/Providers/FreeSql.Provider.PostgreSQL/PostgreSQLCodeFirst.cs
index c0bc4d02..1d053470 100644
--- a/Providers/FreeSql.Provider.PostgreSQL/PostgreSQLCodeFirst.cs
+++ b/Providers/FreeSql.Provider.PostgreSQL/PostgreSQLCodeFirst.cs
@@ -274,7 +274,7 @@ where ns.nspname = {0} and c.relname = {1}", tboldname ?? tbname);
                         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)"),
+                        is_identity = string.Concat(a[5]).StartsWith(@"nextval('") && (string.Concat(a[5]).EndsWith(@"'::regclass)") || string.Concat(a[5]).EndsWith(@"')")), //pgsql10
                         attndims,
                         comment = string.Concat(a[7])
                     };
diff --git a/Providers/FreeSql.Provider.PostgreSQL/PostgreSQLDbFirst.cs b/Providers/FreeSql.Provider.PostgreSQL/PostgreSQLDbFirst.cs
index 11afd1cf..6420a5c5 100644
--- a/Providers/FreeSql.Provider.PostgreSQL/PostgreSQLDbFirst.cs
+++ b/Providers/FreeSql.Provider.PostgreSQL/PostgreSQLDbFirst.cs
@@ -29,6 +29,28 @@ namespace FreeSql.PostgreSQL
             _commonExpression = commonExpression;
         }
 
+        public bool IsPg10 => ServerVersion >= 10;
+        public int ServerVersion
+        {
+            get
+            {
+                if (_ServerVersionValue == 0 && _orm.Ado.MasterPool != null)
+                    using (var conn = _orm.Ado.MasterPool.Get())
+                    {
+                        try
+                        {
+                            _ServerVersionValue = int.Parse(conn.Value.ServerVersion.Split('.')[0]);
+                        }
+                        catch
+                        {
+                            _ServerVersionValue = 9;
+                        }
+                    }
+                return _ServerVersionValue;
+            }
+        }
+        int _ServerVersionValue = 0;
+
         public int GetDbType(DbColumnInfo column) => (int)GetNpgsqlDbType(column);
         NpgsqlDbType GetNpgsqlDbType(DbColumnInfo column)
         {
@@ -327,7 +349,7 @@ d.description as comment,
 a.attndims,
 case when t.typelem = 0 then t.typtype else t2.typtype end,
 ns2.nspname,
-a.attnum
+a.attnum{(IsPg10 ? ", a.attidentity" : "")}
 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
@@ -349,7 +371,8 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || c.relname")
                     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 is_identity = string.Concat(row[6]).StartsWith(@"nextval('") && (string.Concat(row[6]).EndsWith(@"'::regclass)") || string.Concat(row[6]).EndsWith(@"')"))
+                        || IsPg10 && new[] { "a", "d" }.Contains(string.Concat(row[12])); //pg10 GENERATED { BY DEFAULT | AWAYS } AS IDENTITY
                     var comment = string.Concat(row[7]);
                     var defaultValue = string.Concat(row[6]);
                     int attndims = int.Parse(string.Concat(row[8]));
diff --git a/Providers/FreeSql.Provider.ShenTong/ShenTongCodeFirst.cs b/Providers/FreeSql.Provider.ShenTong/ShenTongCodeFirst.cs
index 06ff4d52..075c7ad3 100644
--- a/Providers/FreeSql.Provider.ShenTong/ShenTongCodeFirst.cs
+++ b/Providers/FreeSql.Provider.ShenTong/ShenTongCodeFirst.cs
@@ -227,7 +227,7 @@ where ns.nspname = {0} and c.relname = {1}", tboldname ?? tbname);
                         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(@"'::text)"),
+                        is_identity = string.Concat(a[5]).StartsWith(@"NEXTVAL('") && (string.Concat(a[5]).EndsWith(@"'::text)") || string.Concat(a[5]).EndsWith(@"')")),
                         attndims,
                         comment = string.Concat(a[7])
                     };
diff --git a/Providers/FreeSql.Provider.ShenTong/ShenTongDbFirst.cs b/Providers/FreeSql.Provider.ShenTong/ShenTongDbFirst.cs
index 6f6e10b1..99dacadf 100644
--- a/Providers/FreeSql.Provider.ShenTong/ShenTongDbFirst.cs
+++ b/Providers/FreeSql.Provider.ShenTong/ShenTongDbFirst.cs
@@ -259,7 +259,7 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || c.relname")
                     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(@"'::text)");
+                    var is_identity = string.Concat(row[6]).StartsWith(@"NEXTVAL('") && (string.Concat(row[6]).EndsWith(@"'::text)") || string.Concat(row[6]).EndsWith(@"')"));
                     var comment = string.Concat(row[7]);
                     var defaultValue = string.Concat(row[6]);
                     int attndims = int.Parse(string.Concat(row[8]));