对返回不正确结果的字符串进行 Elasticsearch 范围过滤答案

【问题标题】：Elasticsearch range filter on strings returning incorrect results对返回不正确结果的字符串进行 Elasticsearch 范围过滤
【发布时间】：2015-03-04 07:21:10
【问题描述】：

在我的索引中，我有一个名为“时间”的字段，其类型为“字符串”。还有另一个类型为“日期”的字段“日期”。

当我尝试查询索引并根据时间过滤结果时，我得到的结果不正确。例如，我的查询是： {"and": { "filters": [ { "term": { "date": "2015-02-06" } }, { "range": { "time": { "from": "22:11 ", "to": "23:59", "include_lower": true, "include_upper": true } } }

在结果中，我得到日期为“2015-02-06”但时间为“16:01”、“07:01”等的字段。

我做错了什么？

【问题讨论】：

标签： elasticsearch

【解决方案1】：

您需要像这样格式化您的时间字段，以便您的范围过滤器起作用。我不认为"range" 知道如何处理"string" 字段。

这对我有用："time" : { "type": "date", "format": "HH:mm" }。

这是我使用的完整示例：

DELETE /test_index

PUT /test_index
{
   "settings": {
      "number_of_shards": 1
   },
   "mappings": {
      "doc": {
         "properties": {
             "time" : { "type": "date", "format": "HH:mm" },
             "date" : { "type": "date" }
         }
      }
   }
}

POST /test_index/_bulk
{"index":{"_index":"test_index","_type":"doc","_id":1}}
{"date": "2015-02-06","time": "16:01"}
{"index":{"_index":"test_index","_type":"doc","_id":2}}
{"date": "2015-02-06","time": "07:01"}
{"index":{"_index":"test_index","_type":"doc","_id":3}}
{"date": "2015-02-06","time": "22:30"}
{"index":{"_index":"test_index","_type":"doc","_id":4}}
{"date": "2015-02-08","time": "15:30"}

POST /test_index/_search
{
   "query": {
      "filtered": {
         "query": {
            "match_all": {}
         },
         "filter": {
            "and": {
               "filters": [
                  {
                     "term": {
                        "date": "2015-02-06"
                     }
                  },
                  {
                     "range": {
                        "time": {
                           "from": "22:11",
                           "to": "23:59",
                           "include_lower": true,
                           "include_upper": true
                        }
                     }
                  }
               ]
            }
         }
      }
   }
}
...
{
   "took": 5,
   "timed_out": false,
   "_shards": {
      "total": 1,
      "successful": 1,
      "failed": 0
   },
   "hits": {
      "total": 1,
      "max_score": 1,
      "hits": [
         {
            "_index": "test_index",
            "_type": "doc",
            "_id": "3",
            "_score": 1,
            "_source": {
               "date": "2015-02-06",
               "time": "22:30"
            }
         }
      ]
   }
}

【讨论】：