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Most Efficient API Endpoint

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
mid

Interview Prompt

We define endpoint efficiency as the ratio of successful calls (status 200) to average latency. Considering only endpoints with at least 5 total calls, which endpoint has the highest efficiency? Show the endpoint, call count, average latency, and the efficiency ratio.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your sql solution with real code execution
  4. Get instant feedback and a hire/no-hire decision