弹性搜索:hour_minute_second映射返回空数据 [英] Elastic search: hour_minute_second mapping returns empty data

问题描述

在我为搜索字段创建的映射下面

Below mapping i have created for search field

PUT /sample/_mapping
{
  "properties": {
    "webDateTime1": {
      "type":   "date",
      "format": "dd-MM-yyyy HH:mm:ss||dd-MM-yyyy||hour_minute_second"
    }
  }
}

如果我基于"04-04-2019 20:17:18"进行搜索以获取正确的数据如果我根据"04-04-2019"进行搜索以获取正确的数据如果我基于"20:17:18"进行搜索，则不知道总是会得到空的结果.任何帮助将不胜感激.

If i search based on "04-04-2019 20:17:18" getting proper data if i search based on "04-04-2019" getting proper data if i search based on "20:17:18" don't know always getting empty result. Any help would be appreciated.

推荐答案

在摄取一些示例文档时:

When you ingest some sample docs:

POST sample/_doc/1
{"webDateTime1":"04-04-2019 20:17:18"}

POST sample/_doc/2
{"webDateTime1":"04-04-2019"}

POST sample/_doc/3
{"webDateTime1":"20:17:18"}

，然后在日期字段上进行汇总，

and then aggregate on the date field,

GET sample/_search
{
  "size": 0, 
  "aggs": {
    "dt_values": {
      "terms": {
        "field": "webDateTime1"
      }
    }
  }
}

您将看到如何实际上索引值:

...
"buckets" : [
        {
          "key" : 73038000,
          "key_as_string" : "01-01-1970 20:17:18",
          "doc_count" : 1
        },
        {
          "key" : 1554336000000,
          "key_as_string" : "04-04-2019 00:00:00",
          "doc_count" : 1
        },
        {
          "key" : 1554409038000,
          "key_as_string" : "04-04-2019 20:17:18",
          "doc_count" : 1
        }
      ]
...

这就是您对 20:17:18 的查询使您头疼的原因.

That's the reason your query for 20:17:18 is causing you a headache.

现在，您通常希望像这样使用 range 查询:

Now, you'd typically wanna use the range query like so:

GET sample/_search
{
  "query": {
    "range": {
      "webDateTime1": {
        "gte": "20:17:18",
        "lte": "20:17:18",
        "format": "HH:mm:ss"
      }
    }
  }
}

注意 format 参数.但是同样，如果您没有在 datetime 字段中提供 date ，那么事实证明它将以Unix纪元作为日期.

Notice the format parameter. But again, if you don't provide a date in your datetime field, it turns out it's going to take the unix epoch as the date.

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