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Minimum Parallel Workers
A hard SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.
- Domain
- SQL
- Difficulty
- hard
- Seniority
- senior, staff
Problem
Determine the minimum number of parallel workers required to run all batch jobs without conflicts. Each job has a start and end timestamp and can overlap with others. Duplicate job entries should be counted once, and jobs missing start or end times should be excluded. Find the peak number of concurrently running jobs at any point.
Practice This Problem
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