id   username  password 
----------------------------------- 
1    admin    ************* 
2    sameer   ************* 
3    stewart   *************

CREATE TABLE IF NOT EXISTS `admin` (  
`id` int(6) unsigned NOT NULL auto_increment,  
`username` varchar(50) NOT NULL default '',  
`password` varchar(100) default NULL,  
PRIMARY KEY (`id`)  
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=4 ; 

CREATE TABLE newadmin AS  
(  
SELECT *  
FROM admin  
) 

CREATE TABLE newadmin LIKE admin;  
INSERT INTO newadmin SELECT * FROM admin; 

CREATE TABLE newadmin LIKE shop.admin;  
CREATE TABLE newshop.newadmin LIKE shop.admin; 

CREATE TABLE newadmin AS  
(  
SELECT username, password FROM admin  
) 

CREATE TABLE newadmin AS  
(  
SELECT id, username AS uname, password AS pass FROM admin  
) 

CREATE TABLE newadmin AS  
(  
SELECT * FROM admin WHERE LEFT(username,1) = 's'  
) 

CREATE TABLE newadmin  
(  
id INTEGER NOT NULL AUTO_INCREMENT PRIMARY KEY  
)  
AS  
(  
SELECT * FROM admin  
) 

CREATE TABLE `wubx` ( `id` int(11) NOT NULL auto_increment,  
`user_id` int(11) NOT NULL default '0',  
`friend_id` int(11) NOT NULL default '0',  
`dir_id` int(11) NOT NULL default '0',  
`created` int(11) NOT NULL default '0',  
UNIQUE KEY `id` (`id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8; 

mysql> create table wubx_ii like wubx; 
Query OK, 0 rows affected (0.00 sec) 
 
mysql> create table wubx_uu like wubx; 
Query OK, 0 rows affected (0.00 sec) 
mysql> create table wubx_dd ( id int(11)); 
Query OK, 0 rows affected (0.00 sec) 

delimiter // 
create trigger wubx_ii after insert on wubx for each row begin insert into wubx_ii set id=new.id,user_id=new.user_id,friend_id=new.friend_id,dir_id=new.dir_id,created=new.created; end// 

create trigger wubx_uu after update on wubx for each row begin replace into wubx_uu set id=new.id,user_id=new.user_id,friend_id=new.friend_id,dir_id=new.dir_id,created=new.created; end// 

create trigger wubx_dd after delete on wubx for each row begin insert into wubx_dd values(old.id); end// 
 
delimiter ; 

insert into wubx values(”,1,10,1,1198464252); 
insert into wubx values(”,1,11,1,1198464252); 
insert into wubx values(”,1,2,1,1198464252); 
insert into wubx values(”,2,10,1,1198464252); 
insert into wubx values(”,2,12,1,1198464252); 
insert into wubx values(”,3,12,1,1198464252); 
update wubx set dir_id=5 where user_id=3; 
update wubx set dir_id=4 where user_id=3; 
delete from wubx where user_id=2 and friend_id=12; 

mysql -e ” select concat(‘replace into wubx set id=',id,',user_id=',user_id,',friend_id=',friend_id,',dir_id=',dir_id,',created=',created,';') from wubx_ii;”>>backup_ii.sql 

mysql -e ” select concat(‘update wubx set user_id=',user_id,',friend_id=',friend_id,',dir_id=',dir_id,',created=',created,' where id=',id,';') from wubx_uu;”>>backup_uu.sql 

mysql -e “select concat(‘delete from wubx where id=',id,';') from wubx_dd”>>backup_dd.sql