向wherey一样直接在order 后面再加一层order

例子：

\App\Models\Goods::from('goods as g')->select('*')-orderBy('g.sort_order', 'desc')->offset($begin)->limit($size)->get()->toArray();

\App\Models\Goods::from('goods as g')->select('*')->orderBy('g.sort_order', 'desc')->orderBy('g.goods_id', 'desc')->offset($begin)->limit($size)->get()->toArray();