YoY Signup Growth Rate
A hard SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- SQL
- Difficulty
- hard
- Seniority
- L5
Interview Prompt
For each year, count signups and compute the year-over-year growth rate as a percentage compared to the prior year. Round to the nearest whole number and return results by year ascending.
Summary
This year versus last year. Growing or shrinking?
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