The Merge Counter
An easy 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
- easy
- Seniority
- L4
Interview Prompt
Every CI run in ci_builds records its branch, its trigger and its duration. For 2026, compare merge-build activity on the long-lived main, develop and release branches: the merge-build count per branch, that same count as a decimal, and the average build duration.
Summary
How many builds came from merges?
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