Answers for "laravel use join with eloquent"

laravel join

Inner Join 	: ->join('contacts', 'users.id', '=', 'contacts.user_id')
Left Join 	: ->leftJoin('posts', 'users.id', '=', 'posts.user_id')
Right Join 	: ->rightJoin('posts', 'users.id', '=', 'posts.user_id')
Cross Join 	: ->crossJoin('colors')

Advance Queries : 
----------------- 
 		->join('contacts', function ($join) {
            $join->on('users.id', '=', 'contacts.user_id')
                 ->where('contacts.user_id', '>', 5);
        })

laravel outer join

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

laravel + join 2 eloquent queries

$select->joinSub(
                    $selectSubQry,
                    'ag',
                    'ag.id',
                    '=',
                    'agp.userId'
                );