Yii Criteria

$criteria = new CDbCriteria; 
//select
$criteria->select = ‘*’;//默认*
$criteria->select = ‘id,name’;//指定的字段
$criteria->select = ‘t.*,t.id,t.name’;//连接查询时,第一个表as t,所以用t.*
$criteria->distinct = FALSE; //是否唯一查询 
//join
$criteria->join = ‘left join table2 t2 on(t.id=t2.tid)’; //连接表  
$criteria->with = ‘xxx’; //调用relations  
//where 查询数字字段
$criteria->addCondition(“id=1”); //查询条件,即where id = 1  
$criteria->addBetweenCondition(‘id’, 1, 4);//between 1 and 4     
$criteria->addInCondition(‘id’, array(1,2,3,4,5)); //代表where id IN (1,23,,4,5,);  
$criteria->addNotInCondition(‘id’, array(1,2,3,4,5));//与上面正好相法,是NOT IN
//where 查询字符串字段
$criteria->addSearchCondition(‘name’, ‘分类’);//搜索条件,其实代表了。。where name like ‘%分类%’ 
 
//where 查询日期字段
$criteria->addCondition(“create_time>’2012-11-29 00:00:00′”);
$criteria->addCondition(“create_time<‘2012-11-30 00:00:00′”);
//where and or
$criteria->addCondition(‘id=1′,’OR’);//这是OR条件,多个条件的时候,该条件是OR而非AND &nbsp;
//这个方法比较特殊,他会根据你的参数自动处理成addCondition或者addInCondition,
//即如果第二个参数是数组就会调用addInCondition &nbsp;
$criteria->compare(‘id’, 1); &nbsp; &nbsp;
/** &nbsp;* 传递参数 */ &nbsp;
$criteria->addCondition(“id = :id”); &nbsp;
$criteria->params[‘:id’]=1; &nbsp;
//order&nbsp;
$criteria->order = ‘xxx DESC,XXX ASC’ ;//排序条件 &nbsp;
//group
$criteria->group = ‘group 条件’; &nbsp;
$criteria->having = ‘having 条件 ‘;&nbsp;
//limit
$criteria->limit = 10; &nbsp; &nbsp;//取1条数据,如果小于0,则不作处理 &nbsp;
$criteria->offset = 1; &nbsp; //两条合并起来,则表示 limit 10 offset 1,或者代表了。limit 1,10 &nbsp;

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