wpdb->query(" ALTER TABLE `{$this->query->get_table_submissions()}` ADD COLUMN `referer_title` varchar(300) null AFTER `referer`; "); $this->wpdb->query(" ALTER TABLE `{$this->query->get_table_submissions()}` ADD INDEX `referer_index` (`referer`({$max_index_length})), ADD INDEX `referer_title_index` (`referer_title`({$max_index_length})); "); // phpcs:enable } }