每周获奖者列出每周获胜者

Question

我有一张数据表 数据库表格看起来像

   id   |   name   |  userid  |  score   |      date      |
   ------------------------------------------------------------
1   |   john   |    4     |   233    |  2014-02-02 
2   |   mary   |    5     |  1256    |  2013-02-05  
3   |   john   |    6     |   100    |  2013-03-08 
4   |   elvis  |    7     |   123    |  2013-03-04 
5   |   john   |    2     |   1234   |  2013-03-02

我当前的查询正确显示每个月的每月获胜者

"monthly_winners":[
    {
        "id":"2",
        "score":"1256",
        "month":"Feb"
    },
    {
        "id":"5",
        "score":"1234",
        "month":"Mar"
    }
],

但我希望根据最高分（周日至周日开始）显示每周获奖者名单最多两名获胜者，并显示当前结果

"monthly_winners":[
    {
        "id":"2",
        "score":"1256",
        "month":"Feb"


    "weekly_winners":[
            {
                  "id":"1",
                  "score":"1256",
            },
            {
                  "id":"2",
                  "score":"233","
            },

        ],



    },
    {
        "id":"5",
        "score":"1234",
        "month":"Mar"


    "weekly_winners":[
            {
                  "id":"5",
                  "score":"1234",
            },
            {
                  "id":"4",
                  "score":"123","
            },

        ],


    }


],

我正在使用codeigniter

我的控制器代码

public function month_winner()
{


if($win = $this->api_model->month_winner())
{


    $msg = "OK";

}   

else
    $msg = "ERROR";



$output = array(
                    'msg' => $msg,
                    'monthly_winners' => $win,


                );

jsonOutput($output);

}

我的型号代码

    function month_winner()
    {


$query=$this->db->query("x.id,x.score

  JOIN 
     ( SELECT DATE_FORMAT(date,'%Y%m')yearmonth
            , MAX(score) max_score 
         FROM winner x 
        GROUP 
           BY DATE_FORMAT(date,'%Y%m')
     ) y
    ON y.yearmonth = DATE_FORMAT(x.date,'%Y%m')
   AND y.max_score = x.score");

            return $query->result_array();
    }