Ghosts in the Scheduler
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
The platform team is auditing batch jobs that claim to have completed but never recorded an end time. Among jobs that started in 2024, count how many report a completed status and still have no `ended` timestamp.
Summary
It says running. It has been running.
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