Unique Reporters per Content
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
In our chat data, some messages are replies to a piece of content. For each piece of content, count how many unique reporters replied to it, and return the content ID alongside that count.
Summary
How many people flagged each item?
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