thinkphp多表联合查询

1.两个表查询

 $userid=session('user.id');
        $user = M('cuser');
        $data = $user->field('projectno')->where(array('id'=>$userid))->select();
        $xq = M('project');
        $datas = $xq->field('name')->where(array('id'=>$data[0][projectno]))->select();
        $this->assign('xq',$datas);
        $this->assign('title',$datas[0][name].'物业系统');

2.联合查询：联合查询需要写表的全名。

       $userid=session('user.id');
        $user = M('cuser');
        $data = $user->join('INNER JOIN pro_project ON pro_cuser.projectno = pro_project.id')->where(array('pro_cuser.id'=>$userid))->select();
        $this->assign('xq',$data);
        $this->assign('title',$data[0][name].'物业系统');