$count = M('article')
->field('id,ti
tle,subtitle,img_path')
->where(array('article.title'=>$map['title']) OR array('article.art_class'=>$map['art_class']) OR array('article.class_id'=>$map['class_id']) OR array('article.brand_id'=>$map['brand_id']) OR array('goods.name'=>array('like','%'.$map['title'].'%')) OR array('goods.cid'=>$map['class_id']) OR array('goods.bid'=>$map['brand_id']),true)
->union(array('field'=>array('name as title','title as subtitle','thum_path as img_path','id as id'),'table'=>'goods'),true)
->count();
为什么用了union就没用
