Build Health
A medium SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- SQL
- Difficulty
- medium
- Seniority
- L4
Interview Prompt
The platform team wants a CI health leaderboard for the all-hands, scoring each repository in `ci_builds` by its success rate. Measure that rate against every build a repo ran, not only the ones that ended in success or failure, and leave out repos with too few builds to be meaningful. Show the healthiest repos first.
Summary
Score every repo by how often CI stays green.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your sql solution with real code execution
- Get instant feedback and a hire/no-hire decision