LeetCode 181 超过经理收入的员工

题目

代码实现：

方法一：

形式化出两张表（实际上是一张表）a和b，然后语句就很好写了。

Select a.Name as Employee from Employee as a,Employee as b where a.ManagerId = b.Id && a.Salary > b.Salary;

方法二（join on）：
join on 查询两个表里的任选字段

Select a.Name as Employee from Employee as a join Employee as b on a.ManagerId = b.Id && a.Salary > b.Salary;