ORDER BY ".($order?($order.', '):'')
.implode(',',array_filter(array($fields->get_order_statement(),
'promo DESC, NomSortKey, prenom'))).'
ORDER BY ".($order?($order.', '):'')
.implode(',',array_filter(array($fields->get_order_statement(),
'promo DESC, NomSortKey, prenom'))).'