Yii1.1 联表查询

$command = Yii::app()->db->createCommand()->select($select)
            ->from('ueb_product.ueb_ebay_online_listing_bidding as t')
            ->leftJoin('ueb_product.ueb_ebay_online_listing as a', 'a.itemid = t.itemid')
            ->leftJoin('ueb_product.ueb_product as d','d.sku=a.sku')
            ->where($where)
            ->group('t.itemid')
            ->order($sort_str)
            ->limit($limit, $offset);
       $list = $command->queryAll(true);

$biddingItemAllArr = UebModel::model('Ebayonlinelistingbidding')
                ->getDbConnection()->createCommand()
                ->select('itemid,b_itemid,b_sellerid,b_start_price,b_fee,b_listing_status,b_currency,b_sold_1,b_sold_3,b_sold_7')
                ->from('ueb_ebay_online_listing_bidding')
                ->where('itemid in ('.$itemIdStr.')')
                ->queryAll();