The Usual Suspects

A hard 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
hard
Seniority
L4

Interview Prompt

Our monitoring platform records every health check with one of several outcomes, and the on-call team is chasing the checks that timed out. For each cloud region, find the service that logged the most timed-out checks, and report that count, the calendar month it first timed out in, and how many services in the region logged a timeout at all.

Summary

Same services, same checks, same problems.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write and run your SQL against a real database
  4. Answer the interviewer's follow-up questions, then get a hire or no-hire decision