Disable sorting on specific columns

By default the sorting functionality is enabled on all columns, to get it working you just need to activate it from your configuration method like this :

    return $this->get('datatable')
        ->setEntity($this->_entity_name, 'entity')
        ->setEntity('XXXMyBundle:Entity', 'x') // replace 'XXXMyBundle:Entity' by your entity
        ->setFields(
            array(
                'Name'         => 'x.name', // Declaration for fields: 
                'Address'      => 'x.address', // 'label' => 'alias.field_attribute_for_dql'
                'Group'        => 'x.group',
                'Team'         => 'x.team',
                '_identifier_' => 'x.id' // you have to put the identifier field without label. Do not replace the '_identifier_'
            )                         
        )
        ->setColumnSortStatus(array(1 => false, 3 => false)); // Disable sorting on 'address', and 'team' columns.