请教，articlelist如何控制输出数

<ul class="list rank-list">
{king:sql cmd="select top 20 listname,listpath,arthits,artcount,listid1 from (SELECT  kingart_list.listid1,kingart_list.listname,kingart_list.listpath,sum(arthit) as arthits,count(*) as artcount FROM kingart_list INNER JOIN kingart ON kingart_list.listid = kingart.listid group by kingart_list.listname, kingart_list.listpath,kingart_list.listid1) where listid1=[currentlistid/] order by arthits desc,listname;"} 
<li><em class="ranknum rankred">(king:++/)</em><a href="(king:listpath/)"  class="fl">(king:listname/)</a><span class="linum">(点击:(king:arthits/)  文章:(king:artcount/))</span></li>
{/king}
</ul>

  跟这学习了。谢谢