Bottom 2% Services by Spend
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
- L4
Interview Prompt
FinOps is hunting for zombie services that cost almost nothing but still consume billing line items. Identify the bottom 2% of services by total cloud spend in May 2026 by bucketing them into 50 equal-sized percentile groups and returning those in the lowest bucket. Show the service name and total spend, from lowest up.
Summary
The bottom 2% of spenders. Who are they?
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