get_results( "SHOW COLUMNS FROM `{$tableName}` LIKE 'replyTo'" ); if (!empty($columnExists)) { return true; // Already migrated } // Add replyTo column $alterQuery = "ALTER TABLE `{$tableName}` ADD COLUMN `replyTo` VARCHAR(255) NULL AFTER `sender`"; $result = $wpdb->query($alterQuery); if ($result === false) { error_log(sprintf( BackendStrings::getExceptionStrings()['migration_error_add_column'], 'replyTo', $tableName )); return false; } return true; } public static function rollback(): bool { global $wpdb; $tableName = NotificationsTable::getTableName(); $alterQuery = "ALTER TABLE `{$tableName}` DROP COLUMN `replyTo`"; $result = $wpdb->query($alterQuery); return $result !== false; } }