Loading interview...

Session Page View Distance

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, staff

Interview Prompt

The UX research team is studying engagement depth within sessions. For each session, identify the first and last page view by view_id, then compute the distance as the last view's dur_ms minus the first view's dur_ms. Discard any session that contains only a single view. Return the average distance across all qualifying sessions. Sessions are linked to page views through user_id.

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