181. Employees Earning More Than Their Managers

Employees Earning More Than Their Managers"/>

181. Employees Earning More Than Their Managers

Employee 表包含所有员工，他们的经理也属于员工。每个员工都有一个 Id，此外还有一列对应员工的经理的 Id。

+----+-------+--------+-----------+
| Id | Name  | Salary | ManagerId |
+----+-------+--------+-----------+
| 1  | Joe   | 70000  | 3         |
| 2  | Henry | 80000  | 4         |
| 3  | Sam   | 60000  | NULL      |
| 4  | Max   | 90000  | NULL      |
+----+-------+--------+-----------+
给定 Employee 表，编写一个 SQL 查询，该查询可以获取收入超过他们经理的员工的姓名。在上面的表格中，Joe 是唯一一个收入超过他的经理的员工。

+----------+
| Employee |
+----------+
| Joe      |
+----------+

The Employee table holds all employees including their managers. Every employee has an Id, and there is also a column for the manager Id.
Given the Employee table, write a SQL query that finds out employees who earn more than their managers. For the above table, Joe is the only employee who earns more than his manager.

select b.Name as `Employee` from Employee a, Employee b 
where b.ManagerId = a.Id and a.Salary < b.Salaryorselect b.Name as `Employee` from Employee a 
left join Employee b on b.ManagerId = a.Id
where a.Salary < b.Salary