First and Last Peak Accuracy Dates
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
- L3
Interview Prompt
The ML team wants to know when peak model performance was first achieved and whether it has been replicated since. Find the highest accuracy score across all models, then show the earliest and latest training dates where that accuracy was hit.
Summary
Peak accuracy. When it first hit and when it last did.
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