Cakephp DISTINCT

如何使用DISTINCT獲取具有最高值的唯一用戶ID爲total_time_driven_at_this_trip，並且還從另一個基於user_id屬於關係的表中獲取user_name？Cakephp DISTINCT

我想這...

$this->set('tripNsws', $this->TripNsw->find('all',array('limit' => 20,'fields' => array('DISTINCT(TripNsw.user_id)','TripNsw.total_time_driven_at_this_trip'),'group' => array('TripNsw.user_id') ,'order' => array('TripNsw.total_time_driven_at_this_trip desc'))));

，但它不工作。

我想你需要獲得以下....

SELECT DISTINCT(user_id),`total_time_driven_at_this_trip` FROM `trip_nsws` order by `total_time_driven_at_this_trip` desc

來源

2011-07-14 Passionate Developer

// see below url 

    http://book.cakephp.org/1.3/view/1018/find 


array(
    'conditions' => array('Model.field' => $thisValue), //array of conditions 
    'recursive' => 1, //int 
    'fields' => array('Model.field1', 'DISTINCT Model.field2'), //array of field names 
    'order' => array('Model.created', 'Model.field3 DESC'), //string or array defining order 
    'group' => array('Model.field'), //fields to GROUP BY 
    'limit' => n, //int 
    'page' => n, //int 
    'offset'=>n, //int 
    'callbacks' => true //other possible values are false, 'before', 'after' 
) 



// or try this 



function some_function() { 

    $total = $this->Article->find('count'); 

    $pending = $this->Article->find('count', array('conditions' => array('Article.status' => 'pending'))); 

    $authors = $this->Article->User->find('count'); 

    $publishedAuthors = $this->Article->find('count', array(
    'fields' => 'DISTINCT Article.user_id', 
    'conditions' => array('Article.status !=' => 'pending') 
    )); 

}

來源

2012-07-27 10:23:49

我不認爲你的回答是有關的問題 - 在所有 – mark

正確的構造結是

$this->set('tripNsws', $this->TripNsw->find('all',array('fields'=>'DISTINCT TripNsw.user_id')));

來源

2011-12-23 16:14:13 edwinallenz

你可以考慮將其設置爲虛擬域（http://book.cakephp.org/1.3/view/1608/Virtual-fields）

$this->Model->virtualFields['distinct_user'] = 'DISTINCT Model.user_id';

來源

2012-03-23 04:01:02 tvdias

cakephp中DISTINCT keywork的正確語法

$this->set('banners', $this->Banner->find('all',array('fields'=>'DISTINCT Banner.id')));

確保DISTINCT在字段數組中使用。

來源

2012-04-02 13:55:57 Panky

我一直使用GROUP BY查詢來獲得相同的結果DISTINCT

來源

2012-05-15 16:07:57

'fields' => array('DISTINCT Model.Modelfield')

或

'fields' => array('Model.id','DISTINCT Model.Modelfield')

來源

2012-07-15 15:15:25 001221

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