The most efficient means would be to query directly via wpdb
:
$author_ids = $wpdb->get_col(
"
SELECT DISTINCT post_author
FROM $wpdb->posts
WHERE post_type="job"
AND post_status="publish"
"
);
The most efficient means would be to query directly via wpdb
:
$author_ids = $wpdb->get_col(
"
SELECT DISTINCT post_author
FROM $wpdb->posts
WHERE post_type="job"
AND post_status="publish"
"
);