Mysql Append table to add columns - mysql

Question

I like to append a table to add column but without using alert table command
e.g.
This is the table which is missing some columns.
CREATE TABLE IF NOT EXISTS `admin` (
`id` int(11) NOT NULL auto_increment,
`username` varchar(20) NOT NULL,
`passwd` varchar(40) NOT NULL,
`isActive` tinyint(1) NOT NULL default '1',
`lastVisit` datetime NOT NULL default '0000-00-00 00:00:00',
`modifyAt` datetime NOT NULL,
`createdAt` datetime NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
So if i run this query then it should automatically add missing columns into my tables
CREATE TABLE IF NOT EXISTS `admin` (
`id` int(11) NOT NULL auto_increment,
`username` varchar(20) NOT NULL,
`passwd` varchar(40) NOT NULL,
`name` varchar(100) NOT NULL,
`originalUser` tinyint(1) NOT NULL default '0',
`isActive` tinyint(1) NOT NULL default '1',
`lastVisit` datetime NOT NULL default '0000-00-00 00:00:00',
`modifyAt` datetime NOT NULL,
`createdAt` datetime NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
Can this be possible to do without using alert table command ?

Answer 1

I understand your question as you want to add some columns to your table. Please be informed that the term row is usually related to the actual data in your table, not the columns itself. If my assumption is wrong, please clarify your question.
You cannot use CREATE TABLE for altering a table. It is there to create table,
and if it cannot create it, it will in most cases throw an error like you described. Another command exists for that reason: ALTER TABLE.
You might do it something like this.
(1) Create your table with your CREATE TABLE syntax above:
CREATE TABLE IF NOT EXISTS `admin` (
`id` int(11) NOT NULL auto_increment,
`username` varchar(20) NOT NULL,
`passwd` varchar(40) NOT NULL,
`isActive` tinyint(1) NOT NULL default '1',
`lastVisit` datetime NOT NULL default '0000-00-00 00:00:00',
`modifyAt` datetime NOT NULL,
`createdAt` datetime NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
(2) Use ALTER TABLE like this to make the modifications I think you want to have in your second statement (two more columns):
ALTER TABLE
ADD COLUMN `name` varchar(100) NOT NULL AFTER `passwd`,
ADD COLUMN `originalUser` tinyint(1) NOT NULL default '0' AFTER `name`;
Not related to your question, but I'd avoid column names like name, because if you don't escape them properly it'll throw you other errors (see reserved words).