【leetcode SQL】Employees Earning More Than Their Managers，

【leetcode SQL】Employees Earning More Than Their Managers，leetcodeearning

The Employee table holds all employees including their managers. Every employee has an Id, and there is also a column for the manager Id.

+----+-------+--------+-----------+
| Id | Name  | Salary | ManagerId |
+----+-------+--------+-----------+
| 1  | Joe   | 70000  | 3         |
| 2  | Henry | 80000  | 4         |
| 3  | Sam   | 60000  | NULL      |
| 4  | Max   | 90000  | NULL      |
+----+-------+--------+-----------+

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.

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

解决方案如下：

# Write your MySQL query statement below
Select a.Name as Employee 
from Employee a inner join Employee b on a.ManagerId=b.Id
where a.Salary>b.Salary