Tipping Points
A hard 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
- hard
- Seniority
- L5
Interview Prompt
We run health checks across our services and need to audit unexpected state changes. Surface every reading where a service's status differs from its previous check, showing the old and new status side by side.
Summary
A service's health is a story told in how it turns. Find every turn.
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