i was trying to set a password for a db_table in phpmyadmin

i tried inserting this below code in the "sql" tab

PHP Code:
SET PASSWORD FOR 'root'@'localhost' PASSWORD('123456'); 
and unfortunately it has set the password for the root

now everytime i go to localhost/phpmyadmin, i m prompted for the password.

My "config.php" doesnt show password 123456

CANT FIND WHERE IS 123456 GOT INSERTED

PHP Code:
<?php
/*
 * This is needed for cookie based authentication to encrypt password in 
* cookie
 */
$cfg['blowfish_secret'] = 'xampp'/* YOU SHOULD CHANGE THIS FOR A MORE SECURE COOKIE AUTH! */

/*
 * Servers configuration
 */
$i 0;

/*
 * First server
 */
$i++;

/* Authentication type and info */
$cfg['Servers'][$i]['auth_type']     = 'cookie';      // Authentication method (config, http or cookie based)
$cfg['Servers'][$i]['user'] = 'root';
$cfg['Servers'][$i]['password'] = '';
$cfg['Servers'][$i]['extension'] = 'mysql';

/*
 * End of servers configuration
 */

?>