Full Funnel

A hard SQL mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.

Domain
SQL
Difficulty
hard
Seniority
L4

Interview Prompt

The funnel team is building a 'full lifecycle' segment: users who engaged at every stage of the journey, searching, browsing, and buying. Return the usernames of the users who show up across all three.

Summary

Search. Browse. Buy. Only a few do all three.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write and run your SQL against a real database
  4. Answer the interviewer's follow-up questions, then get a hire or no-hire decision