摘要: 1.SQL语句if not exists ( select 1 from tb where xxx='XXX') //不存在,则插入数据 begin insert into tb(xxx) values('XXX') //这里自己定义,插入或更新都可以 end... 阅读全文
posted @ 2015-05-02 15:46 A·DONG 阅读(349) 评论(0) 推荐(0)