Windowing function (1) - top three employees of department salary

Known table

subject

Company executives are interested in who makes the most money in each department of the company . Of a department High income earners It refers to the salary of an employee in the... Of the Department Different In salary Top three .

Write a SQL Inquire about , Find out... In each department High paid employees .
With In any order Return result table .

Example

Refer to the answer

select
    base.Department,
    base.Employee,
    base.Salary
from 
    (select 
        b.name as 'Department',
        a.name as 'Employee',
        a.salary as 'Salary',
        dense_rank() over(partition by a.departmentId order by a.salary desc) as 'salary_rank'
    from 
        Employee a
    join
        Department b
    on 
        a.departmentId = b.id
     ) as base
where
    base.salary_rank <=3

source ： Power button （LeetCode）
link ：https://leetcode.cn/problems/department-top-three-salaries