What Never Arrives
An easy SQL mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.
- Domain
- SQL
- Difficulty
- easy
- Seniority
- mid
Interview Prompt
Our ingestion pipelines read raw records and write cleaned ones, and each job stamps its own run status. Across the runs that finished successfully, find the pipelines losing the most records between what they read and what they wrote, biggest losses first.
Summary
Every run reads more than it delivers. Find the pipelines bleeding the most between the door and the destination.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write and run your SQL against a real database
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision