scaled_float 类型做范围查询 搜索结果不准

                "discount_rate":{

                    "type":"scaled_float",

                    "scaling_factor": 100

                }

在做查询时代码如下：

{

 "from": 0,

 "query": {

  "bool": {

   "filter": {

    "bool": {

     "must": [{

      "term": {

       "visible": 1

      }

     }, {

      "term": {

       "status": "onsale"

      }

     }, {

      "term": {

       "in_offline_shop": 0

      }

     }, {

      "range": {

       "discount_rate": {

        "from": "0",

        "include_lower": false,

        "include_upper": true,

        "to": "4.6"

       }

      }

     }]

    }

   }

  }

 },

 "size": 8

}

发现出来的结果会有折扣为10的数据在里面，请问这个问题有遇到过吗？如何解决