Hello guys
i`m a noob in sql filter bypassing , i know only basic SQL injection

Look at that a little :

http://www.martinfluidpower.co.uk/category.php?id=578

I can find the nr. of columns , but then when i try union select ,
it gives a 500 Internal server error !

How can i bypass that ? :)

Thanks ;)

maybe this helps:
http://websec.wordpress.com/tag/sql-filter-evasion/

Hm , thanks for your reply , but i need the example with that site , i told that i`m still a newbie in using the SQLi filter bypassing techniques lol ! :P