The Price of a Tap

An easy 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
easy
Seniority
L3

Interview Prompt

For every named push campaign, broken out by the year it ran, marketing needs to know how hard it worked to earn a customer: how many notifications it took to win a single open.

Summary

The campaign fired thousands of pushes. Find what each open really cost.

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