ALTER TABLE [table_name] MODIFY created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL;
TIMESTAMP ON UPDATE CURRENT_TIMESTAMP 表示更新的時候自動獲取當前時間(格式爲Y-m-d H:i:s)ALTER TABLE [table_name] MODIFY updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP NOT NULL;
ps:TIMESTAMP 與 DATETIME的區別TIMESTAMP:值不能早於1970或晚於2037。。DATETIME:'1000-01-01 00:00:00'到'9999-12-31 23:59:59'