No Gaps
An easy 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
- easy
- Seniority
- L3
Interview Prompt
The email marketing team is preparing a campaign blast and needs a clean contact list with no blank fields. For each currently active user, show their username, email address, and age bucket, filling in a placeholder wherever the email or age bucket is missing.
Summary
Zero blanks. A clean contact list.
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