摘要： 游标取值越界时，利用标志来结束mysql curson中，可以declare continue hander来操作越界标志declare continue handler create procedure p16() begin declare row_gid int; declare row_nu 阅读全文

摘要： 更新 mysql> create trigger t2 -> after -> insert on ord -> for each row -> begin update goods set num=num-new.mch where gid = new.gid; -> end$Query OK, 阅读全文