MySQL时间戳

Question

我在Amazon Web Service（AWS）关系数据库服务（RDS）中有一个表，表列是＆＃34; Memory＆＃34;，＆＃34; Cores＆＃34;，＆＃34; Speed＆＃ 34;和＆＃34; Insert_Timestamp＆＃34;每次在此表中添加新行时，我都会尝试将数据库记录下来。话虽如此，我正在运行以下代码Alter table Instace_Types ALTER COLUMN Insert_Timestamp SET DEFAULT CURRENT_TIMESTAMP。我遇到了这个错误：

 "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'COLUMN Insert_Timestamp SET DEFAULT CURRENT_TIMESTAMP' at line 1" 

任何输入都将不胜感激。

Answer 1

第二个ALTER应为CHANGE。

Alter table Instance_Types 
     CHANGE Insert_Timestamp 
            Insert_Timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP