Double or Nothing
A hard SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- SQL
- Difficulty
- hard
- Seniority
- L5
Interview Prompt
A pricing analyst is auditing products that share a category but carry wildly different prices. Within each category, surface every pair of products whose prices are far enough apart to look like a shelving mistake, showing both product names, the category, and both prices.
Summary
Same shelf, wildly different stickers. Spot the pricing gaps.
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