Twice Over
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
Our ML platform's training metadata is carrying duplicate runs that quietly inflate the compute bill. Surface the models that were trained more than once, alongside how many times each one ran, most runs first.
Summary
Same model, trained twice.
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