$sql='select (select count(*) from users) as usernum,(select count(*) from metadata) as metanum,(select count(*) from offlineapp where ts_approved is not null ) as offlinenum';
$row=$this->db->fetchRow($sql);
$this->view->usernum=$row['usernum'];
$this->view->metanum=$row['metanum'];
$this->view->offlinenum=$row['offlinenum'];
/*$sql='select count(*) from metadata';
$row=$this->db->fetchRow($sql);
$this->view->metanum=$row['count'];*/
$sql="select sum(filesize) as sum,datatype from metadata group by datatype";
$rows=$this->db->fetchAll($sql);
foreach($rowsas$row)
{
if($row['datatype'])
$this->view->offlinesize=$row['sum'];
else
$this->view->onlinesize=$row['sum'];
}
//特色推荐
$sql="select * from datafeature order by id desc";
$this->view->feature=$this->db->fetchRow($sql);
//特色数据集
$sql="select * from datasetcd order by random()";
$this->view->datasetcd=$this->db->fetchRow($sql);
//下载最多数据(top 5)
$sql="select uuid,title,id from normalmetadata where id in (select m.id from normalmetadata m left join dataorder d on m.uuid=d.uuid where m.datatype=0 group by m.id order by count(d.uuid) desc limit 5)";
$this->db->setFetchMode(Zend_Db::FETCH_OBJ);
$this->view->mdtop=$this->db->fetchAll($sql);
$sql="select uuid,title,id from normalmetadata where id in (select m.id from normalmetadata m left join dataorder d on m.uuid=d.uuid where m.datatype=1 group by m.id order by count(d.uuid) desc limit 5)";
$sql="SELECT * FROM archive WHERE is_pub=true AND ts_published<'$time' AND image!='' and id in (select ar_catalog.aid from ar_category left join ar_catalog on ar_category.id=ar_catalog.cid where ar_category.code='featured') order by ts_published desc LIMIT 5";