Yii中CDbCriteria的常用方法，一般在search()函数里
$criteria = new CDbCriteria();
$criteria->addCondition("username='".Yii::app()->user->name."'");//获取传递当前登录用户
$criteria->addCondition("id=1"); //查询条件，即where id = 1
$criteria->addInCondition('id', array(1,2,3,4,5)); //代表where id IN (1,23,,4,5,);
$criteria->addNotInCondition('id', array(1,2,3,...