Annual Pipeline Failures
A easy SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- SQL
- Difficulty
- easy
- Seniority
- L3
Interview Prompt
The data engineering team is reviewing historical reliability for the 'etl_users' pipeline. Count the number of failed runs per year, excluding any runs without a recorded start time. Present results from the earliest year to the latest.
Summary
How many pipelines broke this year?
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