Yii不返回是db

Question

这是我的疑问：

SELECT * FROM mytable WHERE `USER` = '1599' AND `id` = '124253' AND `wednesday` IS NULL

这是php代码：

$check = Test::model()->find("id =:id and user =:user and ".$day." =:day ", array(":id" => $check_lunch_per_day, ":user" => $user, 'day'=> null));

另一次尝试：

$check = Test::model()->find("id =:id and user =:user and ".$day." =:day ", array(":id" => $check_lunch_per_day, ":user" => $user, 'day'=> 'IS NULL'));

但检查结果始终为空。我该怎么办？如果它为null，我想得到星期三列值。

Answer 1

这应该有效，

将:day设为IS NULL

    $check = Test::model()->find("id =:id and user =:user and ".$day." =:day ",
array(":id" => $check_lunch_per_day, ":user" => $user, ':day'=> 'IS NULL'));