$list=$model->table("$dName d ,$mName m,$cName c")
->field('d.*,m.title as musicTitle,m.hit as hit,m.down as down,m.likes as `like`,m.user_id as ownerId,c.name as categoryName')
->where(array(
"d.user_id=".$userId,
'd.info_id=m.id',
'm.category=c.id'
))
->order('d.crdate desc')
->limit($Page->firstRow . ',' . $Page->listRows)
->select();