Group events by the 'source' field extracted from payload using JSON_EXTRACT_SCALAR
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
Group events by the 'source' field extracted from payload using JSON_EXTRACT_SCALAR. Return the extracted source aliased as traffic_source and the count of events aliased as event_count. Order by event_count descending.
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