From event_data, return event_id and JSON_EXTRACT_SCALAR(payload, '$.amount') as amount for events w
A medium SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- SQL
- Difficulty
- medium
Interview Prompt
From event_data, return event_id and JSON_EXTRACT_SCALAR(payload, '$.amount') as amount for events where event_type is 'purchase'. Order by event_id ascending.
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