超过经理收入的员工 表的自JOIN
2024-09-30 14:24:13
https://leetcode-cn.com/problems/employees-earning-more-than-their-managers/description/
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 e.Name AS Employee FROM Employee e LEFT JOIN Employee eb ON e.ManagerId=eb.Id WHERE e.ManagerId IS NOT NULL AND e.Salary>eb.Salary;
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