Add Link in datatable with ajax

Hi,

I have a datatable in my website, I get the data with ajax:

$('#counties').dataTable( {
        "bProcessing": true,
        "bServerSide": true,
        "bJQueryUI": true,
		"bAutoWidth": false,
		"sPaginationType": "full_numbers",
		"sAjaxSource": "ajaxbackend.php?function=Datatable&aColumns=CountyId,Name,(SELECT StateName FROM StateOrProvince WHERE County.StateId = StateId),''&sIndexColumn=CountyId&sTable=County"
});

I need a hiperlink in the fourth field, I don't know make this.

Thanks