The Blind Spot

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

Domain

SQL

Difficulty

medium

Seniority

L5

Problem

We run a content platform with a built-in team chat, and we want to surface pages a person has not opened yet but someone they talk to has. Treat two people as connected when they have both posted in the same chat channel, and for each person return the pages a connection has viewed that the person themselves never has.

Summary

Pages they haven't discovered yet.

Practice This Problem

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