The Ones They Opened

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

Domain

SQL

Difficulty

medium

Seniority

L4

Problem

Our push notification system records an `opened` flag on every notification along with the campaign that sent it. Find the campaigns that pulled more opens than the average campaign, listed with the most opens first.

Summary

Every campaign fights for the tap. Find the ones beating the field.

Practice This Problem

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