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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
junior, mid

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.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your sql solution with real code execution
  4. Get instant feedback and a hire/no-hire decision