184. 部门工资最高的员工

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题目

Employee 表包含所有员工信息，每个员工有其对应的 Id, salary 和 department Id。

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+----+-------+--------+--------------+
| Id | Name  | Salary | DepartmentId |
+----+-------+--------+--------------+
| 1  | Joe   | 70000  | 1            |
| 2  | Henry | 80000  | 2            |
| 3  | Sam   | 60000  | 2            |
| 4  | Max   | 90000  | 1            |
+----+-------+--------+--------------+

Department 表包含公司所有部门的信息。

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+----+----------+
| Id | Name     |
+----+----------+
| 1  | IT       |
| 2  | Sales    |
+----+----------+

编写一个 SQL 查询，找出每个部门工资最高的员工。例如，根据上述给定的表格，Max 在 IT 部门有最高工资，Henry 在 Sales 部门有最高工资。

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+------------+----------+--------+
| Department | Employee | Salary |
+------------+----------+--------+
| IT         | Max      | 90000  |
| Sales      | Henry    | 80000  |
+------------+----------+--------+

解法

解法一：

SQL

代码

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# Write your MySQL query statement below
select Department.Name as Department,Employee.Name as Employee,Salary from Employee,Department where Employee.DepartmentId = Department.Id and Salary = (select max(Salary) from Employee where Employee.DepartmentId = Department.Id) order by Department.Id desc;

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