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 need to identify the peak traffic hour of the day. First tally API calls per day and hour, then average across days. Which single hour has the highest average call volume? Return the hour and its average call count.

Summary

The hour when traffic peaks.

Practice This Problem

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