User Session Roster
A medium SQL mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.
- Domain
- SQL
- Difficulty
- medium
- Seniority
- L3
Interview Prompt
Our usernames were typed in by hand, so they aren't consistent. From `users` and `user_sessions`, build a roster of each user's name, account status, signup date and session start that includes people who have never started a session.
Summary
Every user paired with their sessions, even users who never logged in
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write and run your SQL against a real database
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision