API Calls With and Without Errors
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 API reliability team is triaging error rates across the platform. For each endpoint, they need a breakdown of how many calls completed cleanly versus how many produced an error message, along with the total call volume per endpoint.
Summary
Some calls succeed. Some do not. Break it down.
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