Category Buyers
A medium SQL mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.
- Domain
- SQL
- Difficulty
- medium
- Seniority
- L4
Interview Prompt
The merchandising team is deciding where to concentrate their next promotional push. For each product category, give the number of unique customers who bought and the total revenue those purchases generated, focusing on categories with a real audience behind them.
Summary
Which categories have the broadest reach?
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write and run your SQL against a real database
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision