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yii中使用ar可以进展嵌套吗

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Release: 2016-06-13 12:07:56
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yii中使用ar可以进行嵌套吗?

$c             = new CDbCriteria();<br />$c->join   = "left join (select goods_id, group_concat(name) as `tags` from goods_tag group by goods_id) `tag` on tag.goods_id=t.id";<br />$res = Goods::model()->with( 'brand' )->findAll( $c );
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类似上面的查询(上面的不对,查不出 tags字段),yii用ar可以查询吗?具体怎么操作?
------解决思路----------------------
relation里面有写规则不? 先看下CActiveRecord源码  实在不行直接用sql吧

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