ElasticSearch 分組聚合統計

統計總數：

GET mytest-statistics/_search
{
  "size": 0,
  "query": {
    "bool": {
      "must": [
        {
          "range": {
            "day": {
              "gte": "2022-09-01",
              "lte": "2022-09-01"
            }
          }
        }
      ]
    }
  },
  "aggs": {
    "sumAggCount": {
      "sum": {
        "field": "count"
      }
    }
  }
}
``

分組聚合統計：

```json
GET mytest-statistics/_search
{
  "size": 0,
  "query": {
    "bool": {
      "must": [
        {
          "range": {
            "day": {
              "gte": "2022-09-01",
              "lte": "2022-09-01"
            }
          }
        }
      ]
    }
  },
  "aggs": {
    "sumByCameraId": {
      "terms": {
        "field": "cameraId",
        "size": 100000000
      },
      "aggs": {
        "sumAggCount": {
          "sum": {
            "field": "count"
          }
        }
      }
    }
  }
}