Top Active Senders per Channel
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
- L4
Interview Prompt
Show the top 3 most active senders by message count in each chat channel. Ties share the same rank with no gaps, which may produce more than 3 rows per channel. Return channel, sender ID, and message count.
Summary
Top three messages per channel by replies.
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