将 tinyint 默认值更改为 1 mysql
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Change tinyint default value into 1 mysql
提问by Karuppiah RK
I have a status column in my database table. Type : tinyint(4)and the Default value is 0. I want to change the default value to 1. How to do that? May be this is a very simple question, but I don't know.
我的数据库表中有一个状态列。键入:tinyint(4),默认值为 0。我想将默认值更改为 1。怎么做?可能这是一个非常简单的问题,但我不知道。
回答by M Khalid Junaid
You can do so
你可以这样做
ALTER TABLE `table_name` CHANGE `column_name` `column_name` TINYINT(4) DEFAULT 1 NOT NULL;
回答by e-fisher
ALTER TABLE MyTable MODIFY COLUMN col TINYINT NOT NULL DEFAULT 1;
回答by Pankaj sharma
If you want add any column in your table you can do this:
如果要在表中添加任何列,可以执行以下操作:
ALTER TABLE table_name CHANGE Column_name tinyint(1) DEFAULT 1 NOT NULL;
回答by Sadikhasan
Try this
尝试这个
ALTER TABLE `Type` CHANGE `status` `status` tinyint(4) NOT NULL DEFAULT '1'
回答by MrCarrot
ALTER TABLE `your_table` CHANGE `your_column` `your_column` TINYINT( 3 ) UNSIGNED NOT NULL DEFAULT '1'