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Latest Commit Build Cost

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
senior

Interview Prompt

We need a CI cost attribution model. For each commit author, identify the repo they most recently committed to that also has CI build history. Then total up all build durations for that repo. Return each author and their total build seconds, alphabetically by author.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your sql solution with real code execution
  4. Get instant feedback and a hire/no-hire decision