Peak Concurrent Batch Jobs

A medium SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.

Domain

SQL

Difficulty

medium

Seniority

L4

Problem

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.

Practice This Problem

Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a real database and grades it automatically.