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Annual Pipeline Failures
A easy SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.
- Domain
- SQL
- Difficulty
- easy
- Seniority
- junior, mid
Problem
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.
Practice This Problem
Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a live PostgreSQL database and grades it instantly.