The Ones Still Listening
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
The engagement team is measuring notification effectiveness for the quarterly product review. Compute the percentage of all push notifications that were both sent to a user with an active account and opened by the recipient.
Summary
A buzz only counts when someone who is still around answers it.
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