Below the Line
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
- L3
Interview Prompt
Every row of `dq_checks` is one data-quality check run, stamped with its `run_at` timestamp and a severity label. Count the 2026 runs that came in at the 'low' severity tier.
Summary
Low severity. High volume.
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