Departments With Many Employees AND High Average Salary

SQL coding challenge · Difficulty: medium · +100 XP

Problem

The real estate team allocates premium offices to departments that are both large AND well-compensated. Criteria: more than 3 employees AND average salary above 60,000.

Tables

Table: departments

| department_id | department_name |
| --- | --- |
| 1 | Engineering |
| 2 | Marketing |
| 3 | HR |
| 4 | Finance |

Table: employees

| employee_id | first_name | department_id | salary | hire_date | manager_id |
| --- | --- | --- | --- | --- | --- |
| 1 | Alice | 1 | 90000 | 2021-03-10 | NULL |
| 2 | Bob | 1 | 75000 | 2021-03-20 | 1 |
| 3 | Charlie | 1 | 80000 | 2021-03-25 | 1 |
| 4 | Victor | 1 | 65000 | 2022-01-15 | 1 |
| 5 | Diana | 2 | 70000 | 2022-06-05 | 1 |
| 6 | Eve | 2 | 65000 | 2021-11-15 | 5 |
| 7 | Frank | 3 | 60000 | 2023-02-28 | 1 |

Expected Output

| department_id | department_name | employee_count | avg_salary |
| --- | --- | --- | --- |
| 1 | Engineering | 4 | 77500.0000 |

• Return: department_id, department_name, emp_count, avg_salary
• Only departments with emp_count > 3 AND avg_salary > 60000
• Sort by avg_salary descending