按日期将日志按最新时间戳分组

Question

请耐心等待，因为我是Elastic Search的新手。以下是进入Elastic Search的数据管道的架构。最底部的“ updated_at”字段是“时间戳”。该数据的新记录每两个小时通过管道传送到ES，同时还带有一个“ updated_at”时间戳。我想编写一个DSL查询，该查询仅按每天的最大（最新）时间戳提取每条记录，但是我不确定如何或从何处开始。我尝试使用aggs，但距离还不太远。

  {
    "_index" : "analyticspeoplecountbycompany",
    "_type" : "analytics_PeopleCountByCompany",
    "_id" : "2hmEZW4Bxxxxx",
    "_score" : 1.0,
    "_source" : {
      "data" : {
        "result" : {
          "result" : [
            {
              "EntityName" : "",
              "Type" : "analytics_PeopleCountByCompany",
              "Value" : null,
              "Template" : {
                "Company" : "XXX",
                "Claimed" : "2",
                "Not Claimed" : "49",
                "Type" : "analytics_PeopleCountByCompany"
              }
            },          
            {
              "EntityName" : "",
              "Type" : "analytics_PeopleCountByCompany",
              "Value" : null,
              "Template" : {
                "Company" : "YYY",
                "Claimed" : "75",
                "Not Claimed" : "108",
                "Type" : "analytics_PeopleCountByCompany"
              }
            },
            {
              "EntityName" : "",
              "Type" : "analytics_PeopleCountByCompany",
              "Value" : null,
              "Template" : {
                "Company" : "ZZZ",
                "Claimed" : "34",
                "Not Claimed" : "92",
                "Type" : "analytics_PeopleCountByCompany"
              }
            },
            {
              "EntityName" : "",
              "Type" : "analytics_PeopleCountByCompany",
              "Value" : null,
              "Template" : {
                "Company" : "AAA",
                "Claimed" : "97",
                "Not Claimed" : "260",
                "Type" : "analytics_PeopleCountByCompany"
              }              
            {
              "EntityName" : "",
              "Type" : "analytics_PeopleCountByCompany",
              "Value" : null,
              "Template" : {
                "Company" : "BBB",
                "Claimed" : "92",
                "Not Claimed" : "269",
                "Type" : "analytics_PeopleCountByCompany"
              }
            }
          ]
        },
        "type" : "analytics_PeopleCountByCompany",
        "description" : "Count of People by Company",
        "updated_at" : "2019-11-13T16:06:47.704Z"