Cost Density Extremes
A medium SQL mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.
- Domain
- SQL
- Difficulty
- medium
- Seniority
- L4
Interview Prompt
The FinOps team is running its regional review of cost density in `cloud_costs`, looking only at billing months that have closed. For every region, show the providers at the lowest and the highest density, with region, provider and density, where a provider's density is what it spent in that region per service it billed.
Summary
Some regions pack more cost per node than others.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write and run your SQL against a real database
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision