join in inner function laravel code example

Example 1: join in laravel

$subCategories = Subcategory::join('categories', 'subcategories.category_id', '=', 'categories.id')
                              ->select('subcategories.*', 'categories.name AS cname')
                              ->orderBy('id', 'desc')
                              ->get();

Example 2: laravel outer join

->join('answers as answers', 'responses.answer_id', '=', 'answers.id', 'left outer')