Update README

README.en.md

@@ -8,7 +8,7 @@ This project is the **official** successor and rewritten version of the original
 Currently maintained by [LibreOJ](https://loj.ac).
 
 # Upgrading
-Because of updates to the database structure, users who upgrade from a commit BEFORE [d5bcbe8fb79e80f9d603b764ac787295cceffa34](https://github.com/syzoj/syzoj/commit/d5bcbe8fb79e80f9d603b764ac787295cceffa34) (Feb 21, 2018) **MUST** perform the following SQL on the database:
+Because of updates to the database structure, users who upgrade from a commit BEFORE [d5bcbe8fb79e80f9d603b764ac787295cceffa34](https://github.com/syzoj/syzoj/commit/d5bcbe8fb79e80f9d603b764ac787295cceffa34) (Feb 21, 2018) **MUST** perform the following SQL on the database.
 
 ```sql
 ALTER TABLE `judge_state` ADD `is_public` TINYINT(1) NOT NULL AFTER `compilation`;
@@ -16,7 +16,7 @@ UPDATE `judge_state` JOIN `problem` ON `problem`.`id` = `judge_state`.`problem_i
 ALTER TABLE `syzoj`.`judge_state` ADD INDEX `judge_state_is_public` (`id`, `is_public`, `type_info`, `type`);
 ```
 
-Who upgrade from a commit BEFORE [26d66ceef24fbb35481317453bcb89ead6c69076](https://github.com/syzoj/syzoj/commit/26d66ceef24fbb35481317453bcb89ead6c69076) (Nov 5, 2018) and not using SQLite **MUST** perform the following SQL on the database:
+Who upgrade from a commit BEFORE [26d66ceef24fbb35481317453bcb89ead6c69076](https://github.com/syzoj/syzoj/commit/26d66ceef24fbb35481317453bcb89ead6c69076) (Nov 5, 2018) and not using SQLite **MUST** perform the following SQL on the database.
 
 ```sql
 ALTER TABLE contest_player CHANGE score_details score_details JSON NOT NULL;
@@ -27,6 +27,12 @@ ALTER TABLE judge_state CHANGE compilation compilation JSON NOT NULL;
 ALTER TABLE judge_state CHANGE result result JSON NOT NULL;
 ```
 
+Who upgraded from a commit BEFORE [84b9e2d7b51e4ed3ab426621b66cf5ae9e1e1c23](https://github.com/syzoj/syzoj/commit/84b9e2d7b51e4ed3ab426621b66cf5ae9e1e1c23) (Nov 6, 2018) **MUST** perform the following SQL on the database. **Notice**: This SQL haven't been tested on a non-MySQL database.
+
+```sql
+ALTER TABLE `problem` ADD `publicize_time` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP AFTER `type`;
+```
+
 # Deploying
 The previous tutorial for deploying is outdated and have been removed. Newest version of tutorial for deploying will be available soon.
 

README.md

@@ -27,6 +27,12 @@ ALTER TABLE judge_state CHANGE compilation compilation JSON NOT NULL;
 ALTER TABLE judge_state CHANGE result result JSON NOT NULL;
 ```
 
+从该 commit [84b9e2d7b51e4ed3ab426621b66cf5ae9e1e1c23](https://github.com/syzoj/syzoj/commit/84b9e2d7b51e4ed3ab426621b66cf5ae9e1e1c23)（2018 年 11 月 6 日）前更新的用户**必须**在其数据库上执行以下 SQL 语句。**注意**：此语句尚未在除 MySQL 外的数据库系统中测试。
+
+```sql
+ALTER TABLE `problem` ADD `publicize_time` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP AFTER `type`;
+```
+
 # 部署
 之前的部署指南已经过期并已被删除。最新的部署指南将在不久后可用。