摘要: SELECT t1.name, t2.salary FROM employee AS t1 INNER JOIN info AS t2 ON t1.name = t2.name; 可以对数据表使用别名selectt1.id,t2.idfromt1leftjoint2ont1.id=t2.idandt... 阅读全文
posted @ 2014-10-23 17:40 晋心 阅读(190) 评论(0) 推荐(0) 编辑