Where the Bill Settles
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
We're reviewing cloud spend across our US regions, where every charge sits as one row in `cloud_costs` tagged with its service and amount. A handful of enormous bills drag the average up, so for each service we track the median charge instead. Return the five services with the highest median, largest first.
Summary
When a handful of giant charges skew the average, the middle tells the truth.
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