500 Error PHP Fatal error: Allowed memory size of 134217728 bytes exhausted

Hello Everyone,

I have got a 500 error with "PHP Fatal error: Allowed memory size of 134217728 bytes exhausted"

This my code.

 public function index()
    {
        $result = DB::select("select
    wp_posts.ID ,
    wp_posts.post_date,
    wp_posts.post_status,
     wp_woocommerce_order_items.order_item_id,
     wp_woocommerce_order_items.order_id,
      wp_woocommerce_order_items.order_item_name,
      wp_woocommerce_order_itemmeta.meta_key,
      wp_woocommerce_order_itemmeta.order_item_id
from
    wp_posts,
    wp_postmeta,
    wp_woocommerce_order_items,
    wp_woocommerce_order_itemmeta
where
    post_type = 'shop_order' and
    wp_posts.ID = wp_postmeta.post_id");
//        $result = Wp_post::where('post_type' , 'shop_order')->get();
        return view('admin.lesson.manage')->with('data',$result )->render();
    }
``

This Query is work properly in phpmyadmin. 

Any  one have idea about this..