Campaign Bookend Engagement

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

The ads team wants to know how front-loaded or back-loaded each campaign's traffic is. For each ad campaign, give the percentage of its total impressions that landed on the campaign's first day and the percentage that landed on its last day.

Summary

First impression versus last. The gap.

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