Loading interview...

Overlapping User Sessions

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

Domain
SQL
Difficulty
medium
Seniority
mid

Interview Prompt

Given a user_sessions table with session_id, user_id, start_time, and end_time, write a query to find all pairs of overlapping sessions for the same user. Two sessions overlap if one starts before the other ends and vice versa. Return user_id, both session_ids, and their start times. Do not pair a session with itself.

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