First Contact
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
- L3
Interview Prompt
The performance team is measuring first-impression latency: for the first time each user hits a given endpoint, how long that call took. For every endpoint, report the average of those first-contact latencies, slowest first.
Summary
Every user's first hello to an endpoint. Timed.
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