HR Database SQL Practice Exercises
Human Resources management system with employees, departments, and job roles
3 ExercisesBeginner to Advanced Level
Basic Employee Queries
Beginner01
Learn to SELECT employee data with filtering and sorting
Topics Covered:
SELECTWHEREORDER BY
Sample Query:
SELECT first_name, last_name, salary FROM employees WHERE salary > 50000 ORDER B...Department Analysis
Intermediate02
JOIN employees with departments and calculate aggregates
Topics Covered:
JOINGROUP BYCOUNT
Sample Query:
SELECT d.department_name, COUNT(e.employee_id) as emp_count, AVG(e.salary) as av...Salary Reporting
Advanced03
Complex salary analysis with subqueries and window functions
Topics Covered:
SubqueriesWindow FunctionsCASE
Sample Query:
SELECT first_name, last_name, salary, CASE WHEN salary > (SELECT AVG(salary) FRO...Ready for Free Practice?
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