的Yii：按日期

Question

计算汇总我在Yii的1.1一个简单的模型：

Expense 

amount: int 
date: string 

如何通过使用内置的Yii的能力日期计算合计？

换句话说我想通过获得以下查询的结果的Yii：

SELECT 
    date, SUM(amount) AS dateAmount 

FROM 
    tbl_expense 

GROUP BY 
    date 

ORDER BY 
    date DESC 

Answer 1

我已经探索了2种方式执行查询，

第一：

$list= Yii::app()->db->createCommand('SELECT date, SUM(amount) AS dateAmount 
FROM tbl_expense 
GROUP BY date 
ORDER BY date DESC')->queryAll(); 
var_dump($list->getData()); 

第二： （通常用于向Gridview和Listview提供数据提供者）

$select = "SELECT date, SUM(amount) AS dateAmount 
FROM tbl_expense 
GROUP BY date 
ORDER BY date DESC"; 

$dataProvider=new CSqlDataProvider($select, 
array(
    'pagination'=>false, 
    'params'=>$sqlParam 
    ) 
); 
var_dump($dataProvider->getData()); 

Answer 2

你可以使用标准

$criteria = new CDbCriteria(); 
$criteria->select = 'date, SUM(amount) dateAmount'; 
$criteria->group = 'date'; 


$model=Expense::model()->find($criteria);