Intermediate Challenges

These challenges combine multiple concepts: JOINs, aggregates, GROUP BY, HAVING, and subqueries.

Challenge 1: Products with Categories

Challenge 2: Category Statistics

Challenge 3: High-Value Categories

Challenge 4: Order Summary

Challenge 5: All Customers Including Non-Buyers

Challenge 6: Order Details

Challenge 7: Never Ordered

Challenge 8: Top Spenders

Free Practice

Ready for the ultimate test? Try the Advanced Challenges!