题目描述
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 |
+----------+
分析
使用连表的方式,连表的条件是a.ManagerId = b.Id
代码
# Write your MySQL query statement below
select a.Name as Employee
from Employee a, Employee b
where a.ManagerId is not null and a.ManagerId = b.Id and a.Salary > b.Salary;
题目链接
https://leetcode-cn.com/problems/employees-earning-more-than-their-managers/description/
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