diff --git a/Providers/FreeSql.Provider.KingbaseES/KingbaseESDbFirst.cs b/Providers/FreeSql.Provider.KingbaseES/KingbaseESDbFirst.cs
index 630d4649..ec403fe1 100644
--- a/Providers/FreeSql.Provider.KingbaseES/KingbaseESDbFirst.cs
+++ b/Providers/FreeSql.Provider.KingbaseES/KingbaseESDbFirst.cs
@@ -258,7 +258,6 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || c.relname")
                 ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
                 if (ds == null) return loc1;
 
-                var position = 0;
                 foreach (object[] row in ds)
                 {
                     var object_id = string.Concat(row[0]);
@@ -308,7 +307,7 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || c.relname")
                         Table = loc2[object_id],
                         Comment = comment,
                         DefaultValue = defaultValue,
-                        Position = ++position
+                        Position = attnum
                     });
                     loc3[object_id][column].DbType = this.GetDbType(loc3[object_id][column]);
                     loc3[object_id][column].CsType = this.GetCsTypeInfo(loc3[object_id][column]);
diff --git a/Providers/FreeSql.Provider.Odbc/KingbaseES/OdbcKingbaseESDbFirst.cs b/Providers/FreeSql.Provider.Odbc/KingbaseES/OdbcKingbaseESDbFirst.cs
index 2c91e65b..5ddd59f6 100644
--- a/Providers/FreeSql.Provider.Odbc/KingbaseES/OdbcKingbaseESDbFirst.cs
+++ b/Providers/FreeSql.Provider.Odbc/KingbaseES/OdbcKingbaseESDbFirst.cs
@@ -259,7 +259,6 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || c.relname")
                 ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
                 if (ds == null) return loc1;
 
-                var position = 0;
                 foreach (object[] row in ds)
                 {
                     var object_id = string.Concat(row[0]);
@@ -309,7 +308,7 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || c.relname")
                         Table = loc2[object_id],
                         Comment = comment,
                         DefaultValue = defaultValue,
-                        Position = ++position
+                        Position = attnum
                     });
                     loc3[object_id][column].DbType = this.GetDbType(loc3[object_id][column]);
                     loc3[object_id][column].CsType = this.GetCsTypeInfo(loc3[object_id][column]);
diff --git a/Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLDbFirst.cs b/Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLDbFirst.cs
index 26df9605..c5290650 100644
--- a/Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLDbFirst.cs
+++ b/Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLDbFirst.cs
@@ -273,7 +273,6 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || c.relname")
                 ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
                 if (ds == null) return loc1;
 
-                var position = 0;
                 foreach (object[] row in ds)
                 {
                     var object_id = string.Concat(row[0]);
@@ -324,7 +323,7 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || c.relname")
                         Table = loc2[object_id],
                         Comment = comment,
                         DefaultValue = defaultValue,
-                        Position = ++position
+                        Position = attnum
                     });
                     loc3[object_id][column].DbType = this.GetDbType(loc3[object_id][column]);
                     loc3[object_id][column].CsType = this.GetCsTypeInfo(loc3[object_id][column]);
diff --git a/Providers/FreeSql.Provider.PostgreSQL/PostgreSQLDbFirst.cs b/Providers/FreeSql.Provider.PostgreSQL/PostgreSQLDbFirst.cs
index b6fa8c05..3511ae24 100644
--- a/Providers/FreeSql.Provider.PostgreSQL/PostgreSQLDbFirst.cs
+++ b/Providers/FreeSql.Provider.PostgreSQL/PostgreSQLDbFirst.cs
@@ -381,7 +381,6 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || c.relname")
                 ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
                 if (ds == null) return loc1;
 
-                var position = 0;
                 foreach (object[] row in ds)
                 {
                     var object_id = string.Concat(row[0]);
@@ -432,7 +431,7 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || c.relname")
                         Table = loc2[object_id],
                         Comment = comment,
                         DefaultValue = defaultValue,
-                        Position = ++position
+                        Position = attnum
                     });
                     loc3[object_id][column].DbType = this.GetDbType(loc3[object_id][column]);
                     loc3[object_id][column].CsType = this.GetCsTypeInfo(loc3[object_id][column]);
diff --git a/Providers/FreeSql.Provider.ShenTong/ShenTongDbFirst.cs b/Providers/FreeSql.Provider.ShenTong/ShenTongDbFirst.cs
index a537b8f9..dce79303 100644
--- a/Providers/FreeSql.Provider.ShenTong/ShenTongDbFirst.cs
+++ b/Providers/FreeSql.Provider.ShenTong/ShenTongDbFirst.cs
@@ -277,7 +277,6 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || c.relname")
                 ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
                 if (ds == null) return loc1;
 
-                var position = 0;
                 foreach (object[] row in ds)
                 {
                     var object_id = string.Concat(row[0]);
@@ -327,7 +326,7 @@ where {loc8.ToString().Replace("a.table_name", "ns.nspname || '.' || c.relname")
                         Table = loc2[object_id],
                         Comment = comment,
                         DefaultValue = defaultValue,
-                        Position = ++position
+                        Position = attnum
                     });
                     loc3[object_id][column].DbType = this.GetDbType(loc3[object_id][column]);
                     loc3[object_id][column].CsType = this.GetCsTypeInfo(loc3[object_id][column]);