编写laravel原始查询的地方？

use Illuminate\Support\Facades\DB;

public function index()
{
    $users = DB::select('SELECT * FROM users');
    // 处理查询结果...
}

use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\DB;

class User extends Model
{
    public function getUsers()
    {
        $users = DB::select('SELECT * FROM users');
        // 处理查询结果...
    }
}

use Illuminate\Database\Eloquent\Model;

class User extends Model
{
    public function getUsers()
    {
        $users = $this->getConnection()->select('SELECT * FROM users');
        // 处理查询结果...
    }
}

use Illuminate\Support\Facades\DB;
use Illuminate\Database\Migrations\Migration;

class CreateUsersTable extends Migration
{
    public function up()
    {
        DB::statement('CREATE TABLE users (...)');
    }

    public function down()
    {
        DB::statement('DROP TABLE users');
    }
}