exec(" ALTER TABLE `msz_users` ADD COLUMN `user_birthdate` DATE NULL DEFAULT NULL AFTER `user_about_parser`, DROP INDEX `users_indices`, ADD INDEX `users_indices` (`user_country`, `user_created`, `user_active`, `user_deleted`, `user_birthdate`); "); } function migrate_down(PDO $conn): void { $conn->exec(" ALTER TABLE `msz_users` DROP COLUMN `user_birthdate`; "); }