Pipeline Duration vs Throughput
A hard SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- SQL
- Difficulty
- hard
- Seniority
- L5
Interview Prompt
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.
Summary
Does throughput correlate with duration?
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