Database 181. Employees Earning More Than Their Managers

实现：

select e.Name as Employee from Employee e, Employee m

where e.ManagerId=m.Id and e.Salary>m.Salary

分析：

Runtime：1521ms beats 25.21%

这个蛮简单就是为什么效率这么低，应该是用的连接有问题，再看。

Database 181. Employees Earning More Than Their Managers

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