Job Status Duration
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
In `batch_jobs`, each row records a recurring job entering a new `status` at its `started` time, and the job stays in that status until its next change. For the platform team's capacity review, total the hours each job has spent 'running'.
Summary
How long in each job state?
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