简单多表查询

//如果需要进行分页的话,和平时操作一样,没有区别
         $Model=new Model();
        $this->companyList=$Model
            ->table(array(
                        C('DB_PREFIX').'company'=>'company',
                        C('DB_PREFIX').'meet'=>'meet',
                        C('DB_PREFIX').'category'=>'category',
                    )
              )
            ->where('company.meetid=meet.id and company.categoryid=category.id')
            ->field('company.* , meet.title , category.category')
            ->order('company.meetid desc')
            ->select();