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Full Funnel

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

Interview Prompt

The funnel team is building a "full lifecycle" segment of users who engaged at every stage: searching, browsing, and purchasing. Return a deduplicated list of usernames for users who have activity in all three areas.

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