php - How to generate a USING clause in JOIN queries with Laravel's Query Builder? -

postgresql supports using clauses in join statements, , want use simplify query. example:

 select * join b using (x, y, z) ... order x; 

how express laravel's query builder or eloquent?

db::table('a')     ->select('*')     ->join('b', function($join))     ->where(...)     ->orderby('x'); 

note question different https://stackoverflow.com/questions/31465918/how-to-generate-a-natural-join-query-with-laravels-query-builder asking natural join, not join using.

also, i'm aware can have same effect multiple $join->on(...) statements, have duplicate columns , must quality columns in both a , b. is, i'd have write 'a.x' instead of 'x' though doesn't matter, because join query ensures both equal anyway. using clause solves problem neatly, generating single result column x, knowing there 1 value.

so, answer - it's impossible.

i continued question on laravel 5, , it's still impossible.

my question - laravel 5. using using operator

my pull request - https://github.com/laravel/framework/pull/12773