diff --git a/Providers/FreeSql.Provider.MySql/MySqlCodeFirst.cs b/Providers/FreeSql.Provider.MySql/MySqlCodeFirst.cs
index 75a2e955..7aac0ed7 100644
--- a/Providers/FreeSql.Provider.MySql/MySqlCodeFirst.cs
+++ b/Providers/FreeSql.Provider.MySql/MySqlCodeFirst.cs
@@ -212,7 +212,7 @@ where a.table_schema in ({0}) and a.table_name in ({1})", tboldname ?? tbname);
 
                     if (istmpatler == false)
                     {
-                        var existsPrimary = LocalExecuteScalar(tbname[0], _commonUtils.FormatSql(" select 1 from information_schema.key_column_usage where table_schema={0} and table_name={1} and constraint_name = 'PRIMARY' limit 1", tbname));
+                        var existsPrimary = LocalExecuteScalar(tbname[0], _commonUtils.FormatSql(" select 1 from information_schema.columns where table_schema={0} and table_name={1} and column_key = 'PRI' limit 1", tbname));
                         foreach (var tbcol in tb.ColumnsByPosition)
                         {
                             if (tbstruct.TryGetValue(tbcol.Attribute.Name, out var tbstructcol) ||
diff --git a/Providers/FreeSql.Provider.Odbc/MySql/OdbcMySqlCodeFirst.cs b/Providers/FreeSql.Provider.Odbc/MySql/OdbcMySqlCodeFirst.cs
index d75e2737..547e3455 100644
--- a/Providers/FreeSql.Provider.Odbc/MySql/OdbcMySqlCodeFirst.cs
+++ b/Providers/FreeSql.Provider.Odbc/MySql/OdbcMySqlCodeFirst.cs
@@ -201,7 +201,7 @@ where a.table_schema in ({0}) and a.table_name in ({1})", tboldname ?? tbname);
 
                     if (istmpatler == false)
                     {
-                        var existsPrimary = LocalExecuteScalar(tbname[0], _commonUtils.FormatSql(" select 1 from information_schema.key_column_usage where table_schema={0} and table_name={1} and constraint_name = 'PRIMARY' limit 1", tbname));
+                        var existsPrimary = LocalExecuteScalar(tbname[0], _commonUtils.FormatSql(" select 1 from information_schema.columns where table_schema={0} and table_name={1} and column_key = 'PRI' limit 1", tbname));
                         foreach (var tbcol in tb.ColumnsByPosition)
                         {
                             var isIdentityChanged = tbcol.Attribute.IsIdentity == true && tbcol.Attribute.DbType.IndexOf("AUTO_INCREMENT", StringComparison.CurrentCultureIgnoreCase) == -1;