How to check current installed version of Laravel

php artisan –version

List some Aggregates methods provided by query builder in Laravel ?

Aggregate function is a function where the values of multiple rows are grouped together as input on certain criteria to form a single value of more significant meaning or measurements such as a set, a bag or a list

Below is list of some Aggregates methods provided by Laravel query builder.

count()

Usage:$products = DB::table(‘products’)->count();

max()

Usage:$price = DB::table(‘orders’)->max(‘price’);

min()

Usage:$price = DB::table(‘orders’)->min(‘price’);

avg()

Usage:$price = DB::table(‘orders’)->avg(‘price’);

sum()

Usage: $price = DB::table(‘orders’)->sum(‘price’);