Tell me how you would you find the top 5 highest-selling items from a list of order histories?

Hard Difficulty

Hard questions require advanced understanding and critical thinking. Here, your problem-solving skills are key, as these questions often involve complex scenarios needing in-depth analysis and well-structured responses.

SQL question

SQL questions test your ability to work with relational databases. Demonstrate your proficiency in writing queries, understanding database design, optimizing performance, and extracting meaningful information from structured data.

Here's a Hint

Focus on writing a clear SQL query using GROUP BY, COUNT/SUM, and ORDER BY with LIMIT, while explaining your approach to data aggregation and sorting.