Use a FULL OUTER JOIN between users and content_items, matching user_id to creator_id

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

Use a FULL OUTER JOIN between users and content_items, matching user_id to creator_id. Return username and title so you can see users who created no content and content with no matching user.

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