The Conversion Story
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
Calculate the conversion rate from free signup to paid subscription, broken down by referral source. The growth team wants to decide where to increase ad spend next quarter. Round to 4 decimal places.
Summary
Signups are one thing. Paid subscriptions are another. Find the gap.
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