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A easy SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- SQL
- Difficulty
- easy
- Seniority
- L3
Interview Prompt
For each month, count unique deployments where a deployment is identified by the combination of service name and version. Format months as 'YYYY-MM'. Return the month and the unique deployment count.
Summary
A month in the life of an engineering team, counted one deploy at a time.
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