Single Service Owners
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
The reliability team is auditing service health from `svc_health`. Which services had their checks come from exactly two different regions, and for each, what are its region count and its average checks per region?
Summary
One owner, one service. Nobody else.
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