Loading interview...

Viewer-to-Purchaser Activity

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

For every user whose very first event was a 'page_view', count how many 'purchase' events they went on to produce. Include users with zero purchases. Return the user ID and purchase count, from highest purchase count down, then user_id ascending.

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