[LeetCode] 181. Employees Earning More Than Their Managers_Easy tag: SQL
2018-08-16 10:24 Johnson_强生仔仔 阅读(161) 评论(0) 编辑 收藏 举报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 | +----------+
Code:
SELECT a.Name as Employee FROM Employee AS a, Employee AS b WHERE a.Salary > b.Salary AND a.ManangerID = b.Id