Frequent Message Senders
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
Surface all sender IDs who have posted more than one message, along with each sender's message count. A downstream anomaly-detection system needs these high-frequency senders.
Summary
Someone is sending too many messages.
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