Return on Patience
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
Return the call count, success rate, average latency, and efficiency of every endpoint with at least 5 calls, most efficient first. Efficiency is an endpoint's successful calls divided by its average latency, so more good responses for less waiting scores higher.
Summary
The best answers cost the least time. Find the ones that pay off.
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