python弹性搜索dsl返回特定密钥的所有唯一值

我有一个名为的字段 account_number 。它包含随机的6个字符串。

我似乎无法让python elasticsearch dsl只返回那些唯一的值。

search = Search(using=client, index=index_name).query(
         {
          "range": {
            "date": {
              "gte": "2021-08-01T08:00:00.000Z",
              "lte": "2021-08-31T23:59:59.599Z"
              #"format": "strict_date_optional_time"
            }
        }
    })

 
search.aggs.bucket("account_number","terms",field="account_number",size="1000")

es_data = search.execute()

不确定我是否需要在查询中定义account_number,或者它是否在agg桶中?。现在,我只得到随机返回的完整行和所有列

这里是一个非dsl形式的工作查询的例子。我认为度量不是必需的,但也许是必需的。

{
  "aggs": {
    "3": {
      "terms": {
        "field": "account_number",
        "order": {
          "1": "desc"
        },
        "size": 5
      },
      "aggs": {
        "1": {
          "sum": {
            "field": "hits"
          }
        }
      }
    }
  },
  "size": 0,
  "stored_fields": [
    "*"
  ],
  "script_fields": {},
  "docvalue_fields": [
    {
      "field": "@timestamp",
      "format": "date_time"
    },
    {
      "field": "date",
      "format": "date_time"
    }
  ],
  "_source": {
    "excludes": []
  },
  "query": {
    "bool": {
      "must": [],
      "filter": [
        {
          "match_all": {}
        },
        {
          "range": {
            "date": {
              "gte": "2021-04-08T21:00:00.000Z",
              "lte": "2021-10-08T21:00:00.000Z",
              "format": "strict_date_optional_time"
            }
          }
        }
      ]
    }
  }
}