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Pipeline Duration vs Throughput
A hard SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.
- Domain
- SQL
- Difficulty
- hard
- Seniority
- senior, staff
Problem
Does pipeline throughput correlate with duration? For each pipeline, calculate the average duration and the average net row output (rows_out minus 10% of rows_in as overhead). Then compute the correlation between average duration and average net output across all pipelines, rounded to 2 decimals. Return a single correlation value.
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