Best in Class
A medium SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- SQL
- Difficulty
- medium
- Seniority
- mid
Interview Prompt
We run an online marketplace where every category has one clear top earner. For each product category, find the product that brought in the most revenue, listed from the highest earner down.
Summary
Every category crowns exactly one earner. Find who wears it.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your sql solution with real code execution
- Get instant feedback and a hire/no-hire decision