在aggs中，指定size的個數，預設為10，即返回10條聚合查詢結果。

{
  "query": {
    "bool": {
      "must": [
        {
          "range": {
            "AddDateTime": {
              "gte": "2018-12-1 00:40:39",
              "lte": "2018-12-21 23:42:59",
              "format": "yyyy-MM-dd HH:mm:ss",
              "time_zone": "+08:00"
            }
          }
        }
      ]
    }
  },
  "size": 0,
  "aggs": {
    "groups": {
      "terms": {
        "field": "ProductSubdivisionId",
        "size":20,
        "order" : {  "_count" : "desc" }
      }
    }
  }
}
 

按照符合條件的document個數，倒排序。增加 

"order":{"_count":"desc"}