有关文章推荐,获取随机文章推荐,帮看看这个代码对不对

相关文章推荐,获取随机文章推荐,帮看看这个代码对不对

$sql = "SELECT * FROM `shops` WHERE `subdomain` != '' ORDER BY RAND() LIMIT 100";

$rows = $db->getData($sql);

foreach($rows as $row)

{

	echo '
'.$row['title'].'
';

}

在文章页面需要获取随机文章做文章推荐,不知道怎么写,上面的对吗?
------解决方案--------------------
$sql = "SELECT * FROM (SELECT * FROM `shops` WHERE `subdomain` != '' ORDER BY RAND() LIMIT 100) t order by id desc";