exec(' ALTER TABLE detect_ban_log DROP COLUMN IF EXISTS `user_name`; ALTER TABLE detect_ban_log DROP COLUMN IF EXISTS `email`; '); return 2023111801; } public function down(): int { DB::getPdo()->exec(" ALTER TABLE detect_ban_log ADD COLUMN IF NOT EXISTS `user_name` varchar(255) NOT NULL DEFAULT '' COMMENT '用户名'; ALTER TABLE detect_ban_log ADD COLUMN IF NOT EXISTS `email` varchar(255) NOT NULL DEFAULT '' COMMENT '用户邮箱'; "); return 2023111800; } };