# Find the peak hours for ad impressions

Canonical URL: <https://datadriven.io/problems/find-the-peak-hours-for-ad-impressions-return-the-hour-as-i-52bf0625>

Domain: SQL · Difficulty: medium

## Problem

Find the peak hours for ad impressions. Return the hour as impression_hour and the count as impression_count, ordered by count descending.

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