Node.js monogdb使用count分组后获得获胜百分比

我有数据

{"id" :1,"win":100},
{"id" :1,"win":150},
{"id" :1,"win":10},
{"id" :1,"win":0},
{"id" :2,"win":100},
{"id" :2,"win":0},
{"id" :3,"win":100},
{"id" :3,"win":200},

我需要找到每个id的获胜百分比； 预期产量

id: 1 winper:75
id: 2 winper:50
id: 1 winper:100

       totalwin  is no. of greatethan zero win
        totalnotwin  is no. equal to zero win

我得到了下面的问题

 db.winn.aggregate([
{
$group: { _id: "$id",
 totalnotwon: { 
         $sum:
                 { $cond: [ { $lte: [ "$win", 0 ] }, 1, 0] }
        } 
        ,
     totalwin: { 
     $sum:
     { $cond: [ { $gt: [ "$win", 0 ] }, 1, 0] }
     } 
    }
}

],function (err, result) {
    console.log(result);
    res.json(result);
});

}))

我得到了结果

我是totlwon totlanotwon 1 3 1 2 1 1 3200

我需要计算一下获胜的可能性 预期 id totlwon totlanotwon% 1 3 1 75 2 1 1 50 3200100

---

win%逻辑（100/（totlwon+totalnotwon））*totalwon

请尝试此查询，它可能会根据您的公式给出结果：

(100/(totalwon+totalnotwon))*totalwon

查询：

db.demo.aggregate([
  {
    $group: {
      _id: '$id',
      total: { $sum: '$win' },
      totalnotwon: {
        $sum: { $cond: [{ $lte: ['$win', 0] }, 1, 0] },
      },
      totalwon: {
        $sum: { $cond: [{ $gt: ['$win', 0] }, 1, 0] },
      },
      total: { $sum: NumberInt(1) },
    },
  },
  {
    $project: {
      result: {
        $floor:{$multiply:[{ $divide:[100,'$total']},'$totalwon']}
      },
    },
  },
]);

---

我正在使用Mongojs模块，其显示的错误NumberPrint未声明，请通过删除NumberPrint来尝试“total:{$sum:1}”，为了更准确，我添加了NumberPrint。获取空响应是使用节点api调用此函数和quey。poject似乎无法访问Lawin colunmsresult没有id$floor:{$multiply:[{$divide:[100，$total']}，$totalwon']}这给了我答案，非常感谢