Holiday Promo Campaign Click Year

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

Domain

SQL

Difficulty

easy

Seniority

L3

Problem

The ad impressions table logs campaign-level clicks. Find the year in which the HOLIDAY_PROMO campaign had at least 1 total click. Roll up impressions by year for the HOLIDAY_PROMO campaign only. Return the qualifying fiscal year.

Summary

One year, the holiday campaign exploded.

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