Advanced Challenges

These challenges require combining multiple advanced concepts. Think carefully about your approach!

Challenge 1: Customer Revenue Ranking

Challenge 2: Category Performance

Challenge 3: Products Purchased Together

Challenge 4: Average Order Value by City

Challenge 5: Products Above Category Average

Challenge 6: Customer Retention

Challenge 7: Complete Business Dashboard

Challenge 8: Full Sales Report

Congratulations!

You've completed all the challenges! You now have solid SQL skills covering:

• SELECT, WHERE, ORDER BY, LIMIT
• All comparison and logical operators
• Aggregate functions and GROUP BY
• HAVING for filtering groups
• INNER, LEFT, and multiple JOINs
• INSERT, UPDATE, DELETE
• Complex queries combining all concepts

Free Practice