function wc_terms_clauses( $clauses, $taxonomies, $args ) {
	global $wpdb;

	// No need to filter when counting.
	if ( strpos( $clauses['fields'], 'COUNT(*)' ) !== false ) {
		return $clauses;
	}

	// Force numeric sort if using name_num custom sorting param.
	if ( ! empty( $args['force_numeric_name'] ) ) {
		$clauses['orderby'] = str_replace( 'ORDER BY t.name', 'ORDER BY t.name+0', $clauses['orderby'] );
	}

	// For sorting, force left join in case order meta is missing.
	if ( ! empty( $args['force_menu_order_sort'] ) ) {
		$clauses['join']    = str_replace( "INNER JOIN {$wpdb->termmeta} ON ( t.term_id = {$wpdb->termmeta}.term_id )", "LEFT JOIN {$wpdb->termmeta} ON ( t.term_id = {$wpdb->termmeta}.term_id AND {$wpdb->termmeta}.meta_key='order')", $clauses['join'] );
		$clauses['where']   = str_replace( "{$wpdb->termmeta}.meta_key = 'order'", "( {$wpdb->termmeta}.meta_key = 'order' OR {$wpdb->termmeta}.meta_key IS NULL )", $clauses['where'] );
		$clauses['orderby'] = 'DESC' === $args['order'] ? str_replace( 'meta_value+0', 'meta_value+0 DESC, t.name', $clauses['orderby'] ) : str_replace( 'meta_value+0', 'meta_value+0 ASC, t.name', $clauses['orderby'] );
	}

	return $clauses;
}