select - 为什么 select count distinct 在 yii 中不起作用？

Question

有人可以告诉我为什么这不起作用，我的意思是 select distinct 不起作用，它没有正确计数；

$count_participants = BridgeMeeting::Model()->with('idUserRegistry')->count(array(
    'condition' => 'id_meeting=:id_meeting',
    'select' => 'id_user_registry',
    'distinct' => true,
    'params' => array(
        "id_meeting" => $data->id_meeting
    ),
        ));

Answer 1

$count_participants = BridgeMeeting::Model()->with('idUserRegistry')->count(array(
    'condition' => 'id_meeting=:id_meeting',
    'select' => 'id_user_registry',
    'distinct' => true,
    'params' => array(
        ":id_meeting" => $data->id_meeting
    ),
        ));

参数名称也应该是 :id_meeting