摘要: select * from emp where sal between 2500 and 5000;--使用between取区间 select * from emp where sal in(2500,5000);--可以指定取想要的数; select * from emp where sal be 阅读全文
posted @ 2017-08-31 19:58 五先森~ 阅读(119) 评论(0) 推荐(0)