The Opening Run
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
- L4
Interview Prompt
The data platform team needs a baseline for measuring throughput improvements over time: how many rows each batch job processed on its very first run. Show each job alongside the rows done from that first execution.
Summary
Before the tuning, before the records. What the first pass carried home.
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