elasticsearch：词条查询失败

Question

I have a mapping for some documents and queries agains terms does fail. I don't understand why:

"mappings":{
     "timeslot":{
            "properties":{
                 "FOB_IN":{
                        "type":"long"
                 },
                 "TRIGGER_CODE":{
                        "type":"long"
                 },
                 "FLIGHT_PHASE":{
                        "type":"long"
                 },
                 "REP16_TRIG":{
                        "type":"long"
                 },
                 "fwot":{
                        "type":"string"
                 },
                 "FOB_OUT":{
                        "type":"long"
                 },
                 "FP":{
                        "type":"long"
                 },
                 "FLTNB":{
                        "type":"string"
                 },
                 "Date":{
                        "format":"strict_date_optional_time||epoch_millis",
                        "type":"date"
                 }
            }
     }
}

I can make a term query against TRIGGER_CODE , for example, and it works fine

{
   "took": 1,
   "timed_out": false,
   "_shards": {
      "total": 1,
      "successful": 1,
      "failed": 0
   },
   "hits": {
      "total": 5,
      "max_score": 4.4446826,
      "hits": [
         {
            "_index": "merged-2016-04",
            "_type": "timeslot",
            "_id": "AVRS8VnirVLwfvMnwpXb",
            "_score": 4.4446826,
            "_source": {
               "Date": "2016-04-03T08:42:44+0000",
               "FLIGHT_PHASE": 20,
               "TRIGGER_CODE": 4000,
               "fwot": "A6-APA"
            }
         }
      ]
   }
}

now the same against fwot does fail . What's wrong?

GET merged-2016-04/_search?size=1
{
    "query" : {
        "term" : { "fwot": "A6-APA"}
    }
}

{
   "took": 1,
   "timed_out": false,
   "_shards": {
      "total": 1,
      "successful": 1,
      "failed": 0
   },
   "hits": {
      "total": 0,
      "max_score": null,
      "hits": []
   }
}

Answer 1

You need fwot to be "index": "not_analyzed" for that to work. And you need to reindex the data for the above change to work.

Here's the complete list of commands for the mapping change and some test data:

PUT /merged-2016-04
{
  "mappings": {
    "timeslot": {
      "properties": {
        "FOB_IN": {
          "type": "long"
        },
        "TRIGGER_CODE": {
          "type": "long"
        },
        "FLIGHT_PHASE": {
          "type": "long"
        },
        "REP16_TRIG": {
          "type": "long"
        },
        "fwot": {
          "type": "string",
          "index": "not_analyzed"
        },
        "FOB_OUT": {
          "type": "long"
        },
        "FP": {
          "type": "long"
        },
        "FLTNB": {
          "type": "string"
        },
        "Date": {
          "format": "strict_date_optional_time||epoch_millis",
          "type": "date"
        }
      }
    }
  }
}

POST /merged-2016-04/timeslot
{
  "Date": "2016-04-03T08:42:44+0000",
  "FLIGHT_PHASE": 20,
  "TRIGGER_CODE": 4000,
  "fwot": "A6-APA"
}

GET merged-2016-04/_search?size=1
{
  "query": {
    "term": {
      "fwot": "A6-APA"
    }
  }
}

Answer 2

请参阅文档页面“ 查询DLS术语查询” ，注意“ 为什么term查询不匹配我的文档 ”以获取详细说明。

Answer 3

We Can use keyword

GET merged-2016-04/_search?size=1
{
  "query": {
      "term": {
        "fwot.keyword": "A6-APA"  
      }
   }
}