MySQL之inner join、left join、right join、limit
一、创建两个表 如图： emp表 dept表 二、inner join 、left join、right join实例 1.inner join（等值连接）只返回两个表中联结字段相等的行 例子1：e,d分别为emp，dept的别名（如果表名过长，方便使用） 例子2： SELECT * FROM emp e INNER JOIN dept d ON e.deptno = d.deptno; 等价于
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相关文章
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