This tutorial explains how to use SQL Aggregate Functions along with multiple columns by adding a GROUP BY clause.
MySQL Playlist - [ Ссылка ]
MySQL documentation - [ Ссылка ]
SQL Code GIST: [ Ссылка ]
![](https://i.ytimg.com/vi/cW2MLIZ5CaU/maxresdefault.jpg)
This tutorial explains how to use SQL Aggregate Functions along with multiple columns by adding a GROUP BY clause.
MySQL Playlist - [ Ссылка ]
MySQL documentation - [ Ссылка ]
SQL Code GIST: [ Ссылка ]