DataDriven
LearnPracticeInterviewDiscussDailyJobs

Users With and Without Ad Clicks

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
Seniority
L4

Interview Prompt

Count users who received at least one ad click versus those who did not. A user counts as clicked if they have any clicked ad impression. Show each group (has click or not) and its user count.

Summary

Clicked an ad versus never clicked. The split.

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

Related

  • All Mock Interviews
  • Practice Mode (untimed)
  • SQL Interview Questions
  • Data Engineering Interview Prep Guide
  • Practice Problems
  • Daily Challenge