Inactive Users in Date Range
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
The data quality team flagged stale records in the user dimension table. Find the users who had no sessions between June 1 and July 1, 2026, and return their usernames.
Summary
Ghost accounts. Active signup, zero sessions.
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