查询方法:
筛选查询video字段不为空的数据
Db::name('table')->where(['is_open' => 1, 'cofc' => $this->cofc, 'video' => array('neq','')])->order('createtime DESC')->page($p, $pNum)->select();
或者类似
array('userid'=>$_SESSION['id'],'state'=>'0','jldp'=>array('neq',''));