Bookends
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
- L4
Interview Prompt
Our side-by-side of the very first signup and the newest one keeps coming back empty, because both turn out to be accounts that never logged a session. Pull every session belonging to the earliest and the most recent signup among people who have actually logged one.
Summary
The extremes of the user base.
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