Feature Flag Fan vs Detractor Pairs
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
Rank enabled users by rollout percentage descending, and disabled users by rollout ascending. Pair the #1 fan with the #1 detractor, #2 with #2, and so on. Break ties by flag ID ascending, and show both user IDs.
Summary
Some users love the flag. Others want it gone.
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