Radio Silence
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
Our mobile A/B tests keep a control group that runs on Android, and we're checking which of those users have gone quiet. For each one whose account is no longer active, return their age bracket alongside the platform and variant, oldest experiment assignment first.
Summary
Android control cohort. Gone quiet.
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