Duplicated User Event Messages
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
- Seniority
- L3
Interview Prompt
We are building a load-testing replay tool that pushes twice the normal volume from the 'user-events' topic. Emit each qualifying message exactly twice as identical copies, ordered by message ID.
Summary
Duplicated messages from the alerts topic.
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