dedecmsv5.7tags标签按ID Desc排序的代码写法

this->dsql->SetQuery("Select aid From `dede_taglist` where tid = '{$this->TagInfos['id']}' And arcrank>-1 limit $limitstart,$getrow");

$this->dsql->SetQuery("Select aid From `dede_taglist` where tid = '{$this->TagInfos['id']}' And arcrank>-1 order by aid desc limit $limitstart,$getrow");