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Deploy Velocity

A hard SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.

Domain
SQL
Difficulty
hard

Interview Prompt

The release manager wants to track how frequently each service deploys. Within each svc_name in deploy_logs, order by deploy_at and measure the gap in days between each consecutive pair of deploys. Average those gaps per service. Return the svc_name and its average gap in days.

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