Dept Top 3 Salaries
ASKED IN INTERVIEWGoogle
Problem Statement
Find employees who earn the top 3 distinct salaries in each department. If multiple employees share a top salary, include all of them.
Rules:
- Output columns: department_name, employee_name, salary.
- Use DENSE_RANK to handle ties.
- Sort by department_name ASC, then salary DESC.
Tests your understanding of
Window Functions, DENSE_RANK and Joins
Input Tables
employees
| employee_id(INTEGER) | employee_name(VARCHAR) | salary(INTEGER) | department_id(INTEGER) |
|---|---|---|---|
| 1 | Joe | 85000 | 1 |
| 2 | Henry | 80000 | 2 |
| 3 | Sam | 60000 | 2 |
| 4 | Max | 90000 | 1 |
| 5 | Janet | 69000 | 1 |
| 6 | Randy | 85000 | 1 |
departments
| id(INTEGER) | name(VARCHAR) |
|---|---|
| 1 | IT |
| 2 | Sales |
salary_grades
| grade(VARCHAR) | min_salary(INTEGER) |
|---|---|
| L5 | 80000 |
Expected Output
| department_name(VARCHAR) | employee_name(VARCHAR) | salary(INTEGER) |
|---|---|---|
| IT | Max | 90000 |
| IT | Joe | 85000 |
| IT | Randy | 85000 |
| IT | Janet | 69000 |
| Sales | Henry | 80000 |
| Sales | Sam | 60000 |
Tags
HardASKED IN INTERVIEWWindow FunctionsDENSE_RANKJoins
20-30 min
31%