$q=$db->query('select * from ked where id_user = '.$ank['id'])->fetch_assoc();

Добавлено 25.05.15 в 12:47:58:
Вариант 2.
$q=$db->query('select ked.id as ked, users.* from user left join ked on users.id = ked.id_user where users.id = '.(isset($_GET['id'])?(int)$_GET['id']:null))->fetch_assoc();


вывод echo $q['ked'] != null?'Машенка':null;