What the Shelf Never Sold
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
- L3
Interview Prompt
A merchandising team needs a revenue report spanning the whole catalog, where a product's revenue is the total amount buyers were charged across all of its sales. List every product with that revenue rounded to two decimals, and a product that never sold a single unit should read zero.
Summary
Some products never moved a single unit. They still belong on the report.
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