题目链接:https://leetcode.com/problems/employees-earning-more-than-their-managers/
题目:
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 |
+———-+
思路:
练习点:别名的使用
算法:
select Name from Employee e where Salary >(select Salary from Employee where Id=e.ManagerId)
时间: 2024-10-15 05:44:11