Who Moved the Needle
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
- L4
Interview Prompt
We're compiling a leaderboard for the onboarding_v3 experiment, where a user's standing is the total metric value they drove. Return the users in the top ten standings, biggest first, along with the variant each was assigned.
Summary
In every experiment, a handful of users carry the result. Find them.
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