i was upgrading a blog for my friend and part of the upgrade required that some of the data be moved to another table, but the row names were not the same so i need to some how copy a value from each row and move it to the new table. after playing around this is what i was able to do.

lets say for example, i have two tables, tes1 and test2

if you need to follow along, here is the mysql dump if you want to follow: 

DROP TABLE IF EXISTS `test1`;
CREATE TABLE `test1` (
  `id1` int(11) NOT NULL auto_increment,
  `name1` varchar(100) NOT NULL default '',
  PRIMARY KEY  (`id1`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=2 ;

-- 
-- Dumping data for table `test1`
--

DROP TABLE IF EXISTS `test2`;
CREATE TABLE `test2` (
  `id2` int(11) NOT NULL auto_increment,
  `name2` varchar(100) NOT NULL default '',
  PRIMARY KEY  (`id2`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ;

-- www.wallpaperama.example
-- Dumping data for table `test2`
--


so lets say i want to move the value of name1 in the table tes1 to name2in the table tes2

as you can see from the mysqldump above, i have the value of name1 as wallpaperama so with the following mysql query i am going to copy the value of name1 and put it in the name2 field. so here is the example: 

INSERT INTO test2 SET name2 = ( SELECT name1 FROM test1 WHERE id1 =1 )


so now when you go to the name2 field in the test2 table, you will see wallpaperama

hope that helps