aggregations、bucket_sort、top_hits

以下语句的含义是，
从 es 中查询 在指定时间（snapshotTime）范围内的数据， 并且将数据按车牌进行分组统计（carPlateNumber），并且进行分页（bucket_sort）， 每组显示一条数据详情（top_hits）

{
  "from": 0,
  "size": 0,
  "query": {
    "bool": {
      "must": [
        {
          "range": {
            "snapshotTime": {
              "from": 1668614400000,
              "to": 1669975825019,
              "include_lower": true,
              "include_upper": true,
              "boost": 1
            }
          }
        }
      ],
      "adjust_pure_negative": true,
      "boost": 1
    }
  },
  "sort": [
    {
      "snapshotTime": {
        "order": "desc"
      }
    }
  ],
  "track_total_hits": 2147483647,
  "aggregations": {
    "carPlateNumber": {
      "terms": {
        "field": "carPlateNumber",
        "size": 2147483647,
        "min_doc_count": 1,
        "shard_min_doc_count": 0,
        "show_term_doc_count_error": false,
        "order": [
          {
            "_count": "desc"
          },
          {
            "_key": "asc"
          }
        ]
      },
      "aggregations": {
        "top_detail": {
          "top_hits": {
            "from": 0,
            "size": 1,
            "version": false,
            "seq_no_primary_term": false,
            "explain": false
          }
        },
        "pv_count": {
          "value_count": {
            "field": "carPlateNumber"
          }
        },
        "r_bucket_sort": {
          "bucket_sort": {
            "sort": {
              "pv_count": {
                "order": "desc"
              }
            },
            "from": 10,
            "size": 10
          }
        }
      }
    }
  }
}