-/**
- * Filter the SQL clauses of an attachment query to include filenames.
- *
- * @since 4.7.0
- * @access private
- *
- * @global wpdb $wpdb WordPress database abstraction object.
- *
- * @param array $clauses An array including WHERE, GROUP BY, JOIN, ORDER BY,
- * DISTINCT, fields (SELECT), and LIMITS clauses.
- * @return array The modified clauses.
- */
-function _filter_query_attachment_filenames( $clauses ) {
- global $wpdb;
- remove_filter( 'posts_clauses', __FUNCTION__ );
-
- // Add a LEFT JOIN of the postmeta table so we don't trample existing JOINs.
- $clauses['join'] .= " LEFT JOIN {$wpdb->postmeta} AS sq1 ON ( {$wpdb->posts}.ID = sq1.post_id AND sq1.meta_key = '_wp_attached_file' )";
-
- $clauses['groupby'] = "{$wpdb->posts}.ID";
-
- $clauses['where'] = preg_replace(
- "/\({$wpdb->posts}.post_content (NOT LIKE|LIKE) (\'[^']+\')\)/",
- "$0 OR ( sq1.meta_value $1 $2 )",
- $clauses['where'] );
-
- return $clauses;
-}
-