Streak Status Changes
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
We monitor daily user status records for unauthorized state changes. Surface every row where the status changed from the previous day, with both the old and new status side by side so the team can audit the transitions.
Summary
Detect value changes across consecutive rows
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