The Days That Line Up
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 platform team is reconciling pipeline runs against the batch jobs that ran alongside them. For each successful pipeline run, match it to every batch job that started on the same calendar day, and report each pipeline name paired with a batch job priority, giving the shortest, average, and longest run duration in seconds for that pairing.
Summary
No key ties these tables but the calendar. Read it right.
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