LeetCode 0185 - Department Top Three Salaries
LeetCode 0185 - Department Top Three Salaries
Reck Zhang
发布于 2021-08-11 14:55:19
发布于 2021-08-11 14:55:19
Department Top Three Salaries
Desicription
The Employee table holds all employees. Every employee has an Id, and there is also a column for the department Id.
+----+-------+--------+--------------+
| Id | Name | Salary | DepartmentId |
+----+-------+--------+--------------+
| 1 | Joe | 70000 | 1 |
| 2 | Henry | 80000 | 2 |
| 3 | Sam | 60000 | 2 |
| 4 | Max | 90000 | 1 |
| 5 | Janet | 69000 | 1 |
| 6 | Randy | 85000 | 1 |
+----+-------+--------+--------------+The Department table holds all departments of the company.
+----+----------+
| Id | Name |
+----+----------+
| 1 | IT |
| 2 | Sales |
+----+----------+Write a SQL query to find employees who earn the top three salaries in each of the department. For the above tables, your SQL query should return the following rows.
+------------+----------+--------+
| Department | Employee | Salary |
+------------+----------+--------+
| IT | Max | 90000 |
| IT | Randy | 85000 |
| IT | Joe | 70000 |
| Sales | Henry | 80000 |
| Sales | Sam | 60000 |
+------------+----------+--------+Solution
SELECT
D.Name as Department,
E.Name as Employee,
E.Salary
FROM
Department D,
Employee E
WHERE
E.DepartmentId = D.Id AND
(SELECT
COUNT(DISTINCT Salary)
FROM
Employee
WHERE
DepartmentId = D.Id AND
Salary > E.Salary) < 3本文参与 腾讯云自媒体分享计划，分享自作者个人站点/博客。
原始发表：2018-06-04，如有侵权请联系 cloudcommunity@tencent.com 删除
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