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
- L5
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.
Summary
Job to job. The transitions.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your sql solution with real code execution
- Get instant feedback and a hire/no-hire decision