之前的cms系统查询语句是:
$data = D('article')->field('id,ti
tle,cid,jumpurl,url,display,createtime,picture')->order('id desc')->where($where)->limit($page->limit)
->r_select(array(
'column',
'cname,rulecatalog',
'id',
'cid'
));
在article表中能查到column表中的cname,rulecatalog等信息,现在在学thinkphp3.1.3该怎么查询?