Question

我怎么能像这个sql一样搜索

select user.user_id,count(distinct user.user_id,user_lesson_read.lesson_id) as counter 
FROM 
user 
inner join 
user_lesson_read 
ON (user.user_id =user_lesson_read.user_id)
GROUP BY user_lesson_read.user_id
having counter >=3

在ARs？这是db结构：

User
--------------------
user_id     |
1           |
--------------------

LessonRead
-------------------------------------
user_id |   lesson_id   | section_id
-------------------------------------
1       |   2           |   A
-------------------------------------
1       |   2           |   B
-------------------------------------
1       |   3           |   A
-------------------------------------
1       |   4           |   A
-------------------------------------

用户1有3个课程记录（课程2,3,4）
我试过像

这样的东西

'userLessonRead'=>array(
            'select'=>'count(distinct t.user_id,t.lesson_id) as b',
            //'condition'=>'',
        ),

我将得到一个CDbException，并且sql不正确：

t.lesson_id) as b, // one parenthesis here

任何人都有帮助吗？谢谢！

Answer 1

试试这个，

在用户模型中，

public function relations()
{

        return array(
                    "lessonread"  => array(self::HAS_MANY,"LessonRead","user_id")
        );
}

在搜索（）中，

$criteria->with = array("user_lesson_read")
$criteria->group = 'user_lesson_read.user_id';
$criteria->having = 'count(distinct t.user_id,t.lesson_id) > 3';

在LessonRead模型中，

public function relations()
{

        return array(
                    "user"  => array(self::BELONGS_TO,"User","user_id")
        );
}

如何使用Yii ActiveRecord关系？

1 个答案: