Active Users Per Platform - Google, Apple Interview Question - SQL | GROUP BY

If you like this video, please support me in making more of these: https://www.paypal.com/ncp/payment/QYQCW68XCX85G ---------------------------------------------- ---------------------------------------------- For each platform (e.g. Windows, iPhone, iPad etc.), calculate the number of users. Consider unique users and not individual sessions. Output the name of the platform with the corresponding number of users. -------- Companies appeared in: Google, Apple Difficulty: Easy Ideas: GROUP BY Problem: https://t.ly/sXKun ---------------------------------------------- ----------------------------------------------