摘要: create PROCEDURE v4(in c_year int) BEGIN declare num int(10) default 0; declare num1 int(10); select code into num from class where class=c_year order by code desc limit 1; IF exists(sele... 阅读全文
posted @ 2016-04-14 21:36 尘梦 阅读(355) 评论(0) 推荐(0) 编辑