Total Hours Between Consecutive Events

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

mid, senior

Interview Prompt

Our pipeline tracks user events with timestamps. For each event type, calculate the total hours elapsed between consecutive events of the same type.

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