The Freshest Record
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
- L5
Interview Prompt
The observability team is tidying up server logs ahead of a weekly review. When one server logs the same message more than once, keep only its most recent occurrence, then narrow to entries from the last 7 days and return every column of the survivors.
Summary
Duplicates everywhere. Only the most recent version of the truth survives.
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