leftJoin in laravel code example

Example 1: laravel join table

$users = DB::table('users')
            ->join('contacts', 'users.id', '=', 'contacts.user_id')
            ->join('orders', 'users.id', '=', 'orders.user_id')
            ->select('users.*', 'contacts.phone', 'orders.price')
            ->get();

Example 2: DB::table('users')->get();

DB::select('SELECT * FROM users WHERE name = ?', array(Input::get('name')));

Example 3: laravel having

$users = DB::table('users')
                ->groupBy('account_id')
                ->having('account_id', '>', 100)
                ->get();