a.id, a.create_by, a.create_date, a.update_by, a.update_date, a.remarks, a.del_flag, a.user_id, a.group_id LEFT JOIN t_group b ON b.id = a.group_id INSERT INTO group_user( id, create_by, create_date, update_by, update_date, remarks, del_flag, user_id, group_id ) VALUES ( #{id}, #{create_by}, now(), #{update_by}, now(), #{remarks}, #{del_flag}, #{user_id}, #{group_id} ) UPDATE group_user SET update_by = #{update_by}, update_date = now(), remarks = #{remarks}, user_id = #{user_id}, group_id = #{group_id} WHERE id = #{id} DELETE FROM group_user WHERE id = #{id} WHERE group_id = #{group_id} UPDATE group_user SET del_flag = #{DEL_FLAG_DELETE} WHERE id = #{id} WHERE group_id = #{group_id}