id, order_id,store_id, message_type, message_content, link, create_time, update_time, create_by, update_by,flag select from message_order_seller order by id desc # 根据store_id（不是主键）返回 list select from message_order_seller where store_id = #{storeId} and flag = 0 order by id desc update message_order_seller set flag = 1 where order_id = #{orderId}