Sorting problem

goldnet

Hi, im using datatables 1.8.1 with server side script on mysql table and on multiple tables i have a problems with sorting using the header of column - it works fine until i add 18 columns, after that if i add another column a cant sotr neither of columns; i add diferent columns types integer, varchar but the result is the same.
I did not alter the ordering script
/*
* Ordering
*/
$sOrder = "";
if ( isset( $_GET['iSortCol_0'] ) )
{
$sOrder = "ORDER BY ";
for ( $i=0 ; $i