The Fast Lane
A medium SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- SQL
- Difficulty
- medium
- Seniority
- L4
Interview Prompt
We score an API endpoint's efficiency as its successful calls (status 200) divided by its average latency, so an endpoint that returns more good responses for less waiting scores higher. For every endpoint with at least 5 calls, return its call count, average latency, and efficiency, most efficient first.
Summary
Every millisecond has to earn its keep.
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