Deploy Velocity Swings
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
- L5
Interview Prompt
After a release retro, the manager wants month-over-month deployment velocity per service. For each service and month, compute the percentage change in deployment count from the previous month. Exclude each service's first month (no baseline). Round to 2 decimals.
Summary
Month to month, who sped up and who stalled.
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