Peak Concurrent Batch Jobs
A medium SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- SQL
- Difficulty
- medium
- Seniority
- L4
Interview Prompt
We're sizing scheduler capacity around the worst pile-up. A job occupies a slot from its start time up to its end time, so if one job ends at the exact instant another starts, the two never overlap. Return the largest number of jobs running at the same instant, as a single number.
Summary
Jobs pile up. Find the moment the scheduler sweats the most.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your sql solution with real code execution
- Get instant feedback and a hire/no-hire decision