choath的博客

之前写了一篇博客,写的如何去写触发器,下面是链接地址:https://blog.youkuaiyun.com/choath/article/details/86512491下面就是当时写的触发器:报错信息:Subquery returns more than 1 rowsBEGIN declare phoneno varchar(20) character set utf8;decl...