Disable sorting for a particular column in jQuery DataTables

Question

I am using the jQuery DataTables plugin to sort the table fields. My question is: how do I disable sorting for a particular column? I have tried with the following code, but

Answer 1

you can also use negative index like this:

$('.datatable').dataTable({
    "sDom": "<'row-fluid'<'span6'l><'span6'f>r>t<'row-fluid'<'span6'i><'span6'p>>",
    "sPaginationType": "bootstrap",
    "aoColumnDefs": [
        { 'bSortable': false, 'aTargets': [ -1 ] }
    ]
});