Pipeline A reads the day's orders, groups by customer, and row-by-row INSERTs into a plain Snowflake
A medium Pipeline Design mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Pipeline Design
- Difficulty
- medium
Interview Prompt
Pipeline A reads the day's orders, groups by customer, and row-by-row INSERTs into a plain Snowflake daily_customer_summary. Each rerun multiplies the rows. The aggregation logic is correct; the bug lives entirely in the write semantics. Convert Pipeline A to Pipeline B by applying the section's named fix at the destination, leaving the aggregation untouched.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your pipeline design solution with real code execution
- Get instant feedback and a hire/no-hire decision