laravel query different from raw sql code example

Example 1: laravel sql query

use Illuminate\Support\Facades\DB;

$users = DB::select('select * from users');

foreach ($users as $user) {
    echo $user->name;
}

Example 2: raw queries in laravel

DB::statement('UPDATE users SET role_id = 1 WHERE role_id IS NULL AND YEAR(created_at) > 2020');