Employee
表包含所有员工信息,每个员工有其对应的 Id, salary 和 department Id。
+----+-------+--------+--------------+| 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。
+----+----------+| 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。
+------------+----------+--------+| Department | Employee | Salary |+------------+----------+--------+| IT | Max | 90000 || Sales | Henry | 80000 |+------------+----------+--------+
# Write your MySQL query statement belowselect d.Name as Department, e.Name as Employee, e.Salary from Department d inner join Employee e on d.Id = e.DepartmentId and e.Salary >= (select max(Salary) from Employee where DepartmentId = d.Id)