employees(employee_id, employee_name, department_id, salary)
Return every employee whose salary is among the top three distinct salaries in their department.
Return department_id, employee_id, employee_name and salary, ordered by
department, then salary descending, then employee id.
Distinct salaries, so two people on the same salary occupy one rank between them and both appear.
Tables
employees
employee_id employee_name department_id salary
----------- ------------- ------------- ---------
1 Ada 10 150000.00
2 Bo 10 120000.00
3 Cy 10 120000.00
4 Di 10 90000.00
5 Eli 10 70000.00
6 Fay 20 50000.00
7 Gus 20 40000.00
Expected result
department_id employee_id employee_name salary
------------- ----------- ------------- ---------
10 1 Ada 150000.00
10 2 Bo 120000.00
10 3 Cy 120000.00
10 4 Di 90000.00
20 6 Fay 50000.00
20 7 Gus 40000.00