The Slow Creep
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
Our CI builds feel like they have been creeping slower year after year, and we want to see where that is happening repository by repository. From `ci_builds`, give the average build duration for each repository and calendar year.
Summary
Every year the builds got heavier. Find where the minutes went.
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