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For each ad campaign, count the total impressions and the number of distinct users who saw the ad.

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

Domain
SQL
Difficulty
medium

Problem

For each ad campaign, count the total impressions and the number of distinct users who saw the ad.

Practice This Problem

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

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