Highest Salary in each department

Question

I have a table EmpDetails:

DeptID      EmpName   Salary
Engg        Sam       1000
Engg        Smith     2000
HR          Denis     1500
HR                  


        

Answer 1

SELECT
    DeptID,
    Salary
FROM
    EmpDetails
GROUP BY
    DeptID
ORDER BY
    Salary desc