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Yii-模型- criteria查找数据库方法


数据模型搜索方法:

public function search()
{
	// Warning: Please modify the following code to remove attributes that
	// should not be searched.

	$criteria=new CDbCriteria;

	$criteria->compare('id',$this->id);
	$criteria->compare('title',$this->title,true);				//支持模糊查找
	$criteria->compare('content',$this->content,true);			//支持模糊查找
	$criteria->compare('type',$this->type);
	$criteria->compare('user',$this->user,true);				//支持模糊查找
	$criteria->compare('status',$this->status);
	$criteria->compare('create_data',$this->create_data,true);	//支持模糊查找

	return new CActiveDataProvider($this, array(
		'criteria'=>$criteria,
		'pagination'=>array(
			'pageSize'=>50,
		),
	));
}


定义比较运算
$criteria->compare('create_time','<='.$this->endtime),//创建早间小于等于指定时间

定义要查找的字段

//查找的结果	
$criteria->select = 'id,title,content,author,status,createtime',
//也可以以下一种方式定义
$criteria->select = array('id','title','content','author','status','createtime'),

定义填加查找条件

//定义条件	
$criteria->select =  'status=1',
//添加匹配
$criteria->compare('title',$this->title,true),
//添加条件 $condition可以是数组,也可以是字符串,and可以省略
$criteria->addCondition($condition,'and'),
//添加IN条件 $column为字段名
$criteria->addInCondition(string $column, array $values, string $operator='AND')
//添加notin条件
$criteria->addNotInCondition(string $column, array $values, string $operator='AND')
//添加like条件
$criteria->addSearchCondition(string $column, string $keyword),
//添加Between条件
$criteria->addBetweenCondition(string $column, string $valueStart, string $valueEnd, string $operator='AND'),

JOIN连表查询

$criteria->join = 'LEFT JOIN users ON users.id=authorID',

order查询结果排序

$criteria->order = 'createtime DESC',

group结果分组

$criteria->group =  'projectID, teamID',

having筛选分组结果分组数量

$criteria->having =  'SUM(revenue)<50000',


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