Is there a method to get posts that have at least one connection of a given connection type?

[l3rady]

I'm looking to query a post type but I dont want to return posts that don't have a connection to another post.

Is it possible?

[davidchoy]

Scribu suggested the answer is "no" two years ago: https://wordpress.org/support/topic/connected_to-any-returning-duplicates

And suggests re-indexing by id to remove duplicates.

I feel there is, or there should be, a better way to do this. Right now, I'm doing this with get_posts like this (kinda ugly):

//get all instructors that have course connections
$instructors = get_posts( array(
'supress_filters' => false,
'post_type' => 'person',
'posts_per_page'=>-1,
'connected_type'=>'course_to_instructor',
'connected_direction'=>'from',
'connected_items'=>'any',
'orderby'=>'title',
'order'=>ASC,
) );
//remove duplicates
$instructors = array_reduce($instructors, function($acc, $curr){
$acc[$curr->ID] = $curr;
return $acc;
}, array());