Fastest and Slowest Services by Region
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
For each region, surface the highest and lowest latency services, excluding any region whose name contains 'test'. If services tie for the top or bottom spot, include all of them.
Summary
The fastest and slowest in every region.
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