16. 附件查看下载做法（虚拟对象）

select '<a class="link" href="/OperateProcessor?Column=F1&PopupWin=false&Table=Entity_t1&operate=Download&&Type=View&ID='||t.id||'" target="_blank">查看</a>  <a class="link download" href="/OperateProcessor?Column=F1&PopupWin=false&Table=Entity_t1&operate=Download&&Type=Attachment&ID='||t.id||'">下载</a>'  link  from Entity_t1 t