The Weight of a Click

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
L5

Interview Prompt

`event_data` holds one row per user action. For `page_view`, `search`, `checkout_start` and `purchase`, report how many users performed each event and each event's share of the total.

Summary

Where users actually spend their attention.

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