Months in Motion
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
- L3
Interview Prompt
We're reading the seasonal rhythm of the business by counting engagement one calendar month at a time, across our full history and limited to transactions worth at least $5. For each month, find how many unique buyers there were and how many transactions happened in total.
Summary
Engagement, counted one month 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