FINDING TOP 3 SALARIES SQL QUERY

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 85000 1
2 Henry 80000 2
3 Sam 60000 2
4 Max 90000 1
5 Janet 69000 1
6 Randy 85000 1
1 Joe 70000 1
7 Will 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 (order of rows does not matter).

Expected output:

Department Employee Salary
IT Max 90000
IT Randy 85000
IT Joe 85000
IT Will 70000
Sales Henry 80000
Sales Sam 60000

Answer:

Select
T.Department,
T.Employee,
T.Salary
from
(
select
D.Name as Department,
E.Name as Employee,
E.Salary,
dense_rank() over (
partition by DepartmentId
order by
Salary desc
) as rnk
from
Employee E
join Department D on E.DepartmentId = D.Id
) T
where
rnk < 4

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