Employees Earning More Than Their Managers (Easy)"/>
【Leetcode】181. Employees Earning More Than Their Managers (Easy)
1.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 | +----------+翻译:给出一个表,找出比主管工资还高的员工名字。
2.思路
复制Employee得到一张新表Employee_new,两张表内连接,保证条件:
①Employee的ManagerId和 Employee_new的Id一致;
②Employee的Salary高于Employee_new的Salary.
3.算法
select Employee.Name as Employee
from Employee join (Employee as Employee_new)
where Employee.ManagerId = Employee_new.Id and Employee.Salary>Employee_new.Salary
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【Leetcode】181. Employees Earning More Than Their Managers (Easy)
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