Top Departments by Average Salary | Dataford Interview Questions

You are given employee and department data from an internal people analytics system. Write a PostgreSQL query to return the top three departments with the highest average employee salary, excluding departments that have fewer than five employees. The result should include the department name, employee count, and average salary, sorted by average salary from highest to lowest.

Schema

departments

Column	Type	Description
department_idPK	INT	Unique identifier for a department
department_name	VARCHAR(100)	Department name

employees

Column	Type	Description
employee_idPK	INT	Unique identifier for an employee
employee_name	VARCHAR(100)	Employee full name
department_id	INT	Department assigned to the employee
salary	DECIMAL(10,2)	Employee salary

Your question is Top Departments by Average Salary. Start with the requirements and the two tables in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Schema

departments

Column	Type	Description
department_idPK	INT	Unique identifier for a department
department_name	VARCHAR(100)	Department name

employees

Column	Type	Description
employee_idPK	INT	Unique identifier for an employee
employee_name	VARCHAR(100)	Employee full name
department_id	INT	Department assigned to the employee
salary	DECIMAL(10,2)	Employee salary

Your question is Top Departments by Average Salary. Start with the requirements and the two tables in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.