注意:存储过程中单引号 ,四个单引号 SET @sql = CONCAT('select user_id into ',m_user_id,' from go_user where mobile =','''',p_user_name,'''',' AND password=','''',p_password,'''');
注意一下,不能省略表中的任何字段.包括自增id.而且字段的顺序必须和插入表一致 原理是“表插表” INSERT INTO prod_attr select A.* from ( SELECT AS prod_id, AS attr_id, '中国出版社' AS attr_value UNION SELECT AS prod_id, AS attr_id, '清华出版社' AS attr_value ) AS A 表结构