如何找到每个蜂巢中薪水最高的部门的前三名员工？

Question

name, salary, department
joe, 95000, Manager
walter, 26500, HR
Adam, 36520,Developer
Sam, 38910, Developer
Romie, 68457,Manager
oliver, 69545, Developer
Mahesh, 89542, Developer
Ricky, 96845,HR
Sara, 84756,Manager
Anand, 36597, HR
Kevin, 98457, HR
Ram, 63547, Manager

输出应为`

Developer, Mahesh, 89542
Developer, oliver, 69545
Developer, Sam, 38910
HR, Kevin, 98457
HR, Ricky, 96845
HR, Anand, 36597
Manager, joe, 95000
Manager, Sara, 84756
Manager, Romie, 68457

`

我希望所有记录都应该像给定的输出一样打印，并且应该在配置单元中运行。

Answer 1

select dept, name, salary from (
    select name, salary, dept, row_number() over(partition by dept order by salary desc) as rn 
    from employee_sal
    ) emp 
where emp.rn<4;

结果将如下所示：

name  salary  dept
Mahesh 89542 Developer
oliver 69545 Developer
Sam 38910 Developer
Kevin 98457 HR
Ricky 96845 HR
Anand 36597 HR
joe 95000 Manager
Sara 84756 Manager
Romie 68457 Manager