Yii模型操作之criteria查找数据库的方法

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,    ),  ));}

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

//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')，

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

$criteria->order = 'createtime DESC',

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

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