Return user_id and username from users where user_id is in the set of user_ids that appear in transa
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
Return user_id and username from users where user_id is in the set of user_ids that appear in transactions. Use a subquery with IN. Order by user_id ascending.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your sql solution with real code execution
- Get instant feedback and a hire/no-hire decision