181. Employees Earning More Than Their Managers

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      |
+----------+
select E1.Name as Employee
from Employee as E1, Employee as E2 
where E1.ManagerId = E2.Id and E1.Salary > E2.Salary;
Write your MySQL query statement below
select E.name as Employee from Employee E
join Employee as M
on E.ManagerId = M.Id
where E.Salary > M.Salary;

 

posted @ 2019-11-19 03:00  Schwifty  阅读(119)  评论(0编辑  收藏  举报