使用CURRENT_TIMESTAMP作默认值的时候如何update时不更改时间
使用CURRENT_TIMESTAMP作默认值的时候怎么update时不更改时间
有一个字段datetime是timestamp类型，使用CURRENT_TIMESTAMP作为默认值
当update时，没有修改这个datetime字段，时间却变成当前系统时间
有什么办法让他不变？
------解决方案--------------------
alter table xxx modify yyy timestamp defualt NULL
------解决方案--------------------
这是因为你在选取timestamp类型的时候phpmyadmin自动选择造成的，点击修改，有一个“属性”选择框，这个时候肯定是on update CURRENT_TIMESTAMP这个值，设置为空即可
------解决方案--------------------
顶起
------解决方案--------------------
+1
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