getTableName(SubscriberEntity::class); $newColumns = [ 'last_sending_at', 'last_open_at', 'last_click_at', 'last_purchase_at', 'last_page_view_at', ]; foreach ($newColumns as $column) { if ($this->columnExists($subscribersTable, $column)) { continue; } $this->connection->executeQuery( "ALTER TABLE `{$subscribersTable}` ADD COLUMN `{$column}` TIMESTAMP NULL DEFAULT NULL, ADD INDEX `{$column}` (`{$column}`)" ); } } }