New User Purchases
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
Growth wants to quantify how much revenue the 2026 signup cohort has generated. Sum all transaction spending for users who signed up during calendar year 2026 and return a single total.
Summary
What's this year's signup cohort worth so far?
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