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Engagement Gap

A medium SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.

Domain
SQL
Difficulty
medium

Interview Prompt

The product analytics team needs purchase counts for every user in the system, including those who have never bought anything. Show each user's username alongside their transaction count, with non-buyers showing zero.

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