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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 err_tracks, the pair (err_type, svc_name) identifies a reporter. Count distinct err_id rows per reporter, scoped to services (svc_name) that have at least one resolved alert in alert_events (resolved is not NULL). Return all reporters tied at the highest distinct flag count. The reporter_identity is err_type || '-' || svc_name. Include ties. Sort alphabetically by reporter_identity.
Summary
Flagged content. Who flagged the most?
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