Александр Токарчук

select 1+t1.n as number, t2.num
from
(select 0 n union select 1 union select 2 union select 3 union select 4 
union select 5 union select 6 union select 7 union select 8 union select 9 ) t1
	left join rate t2 on t1.n=t2.num and t2.usersid=1
order by number

если = null тогда 
...
иначе
....

$this->registerJs('$("#testBut").on("click", function(e) {
         $.ajax({
         	url: "'.\yii\helpers\Url::toRoute(['','id'=>$someid]).'",
         	type : "POST",
         	data : {dat : "qwe"},
         	success : function(res){
         		console.log(res);
				},
			error : function(){
				alert("Ошибка при отправке данных: перезагрузите страницу!");
			}
         })
        return false;  
      })');

$js=<<<JS
...
JS;
$this->registerJs($js);