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Sequential Service Transitions

A hard SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.

Domain
SQL
Difficulty
hard
Seniority
senior

Interview Prompt

Among all users who deployed to 'auth-svc' at some point, how many had 'payments-svc' as their very next deployment (by timestamp) with no other services in between? Return a single count.

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