Database error

[tanzeelniazi]

Today i rec new type email
what is this ?
Database error in vBulletin 4.2.0:

Invalid SQL:
SELECT * FROM userregcode WHERE userregemail = '99999999'] | * | user[@role='admin';

MySQL Error : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '] | * | user[@role='admin'' at line 1
Error Number : 1064
Request Date : Wednesday, January 22nd 2014 @ 08:16:31 PM
Error Date : Wednesday, January 22nd 2014 @ 08:16:31 PM
Script : http://www.*************.com/register.php
Referrer :
IP Address : 74.115.3.65
Username : Unregistered
Classname : **********
MySQL Version :