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

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 number of impressions and the number of distinct users who saw the ad. Label them total_impressions and unique_viewers.

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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