基本 elasticsearch "terms" 查询的问题

Question

我正在尝试运行一个简单的 elasticsearch 术语查询，如下所示（使用意义 chrome 扩展）：

GET _search
{
   "query": {
      "terms": {
         "childcareTypes": [
            "SHARED_CHARGE",
            "OUT_OF_SCHOOL"
         ],
         "minimum_match": 2
      }
   }
}

这个returns 0 次点击：

{
   "took": 2,
   "timed_out": false,
   "_shards": {
      "total": 5,
      "successful": 5,
      "failed": 0
   },
   "hits": {
      "total": 0,
      "max_score": null,
      "hits": []
   }
}

我不确定为什么，因为 match_all 查询确实显示三个记录中的两个匹配：

GET _search
{
   "query": {
    "match_all": {}
   }
}

产量：

{
   "took": 3,
   "timed_out": false,
   "_shards": {
      "total": 5,
      "successful": 5,
      "failed": 0
   },
   "hits": {
      "total": 3,
      "max_score": 1,
      "hits": [
         {
            "_index": "bignibou",
            "_type": "advertisement",
            "_id": "1",
            "_score": 1,
            "_source": {
               "id": 1,
               "childcareWorkerType": "AUXILIAIRE_PARENTALE",
               "childcareTypes": [
                  "SHARED_CHARGE",
                  "OUT_OF_SCHOOL"
               ],
               "giveBath": "YES"
            }
         },
         {
            "_index": "bignibou",
            "_type": "advertisement",
            "_id": "2",
            "_score": 1,
            "_source": {
               "id": 2,
               "childcareWorkerType": "AUXILIAIRE_PARENTALE",
               "childcareTypes": [
                  "SHARED_CHARGE",
                  "OUT_OF_SCHOOL"
               ],
               "giveBath": "EMPTY"
            }
         },
         {
            "_index": "bignibou",
            "_type": "advertisement",
            "_id": "3",
            "_score": 1,
            "_source": {
               "id": 3,
               "childcareWorkerType": "AUXILIAIRE_PARENTALE",
               "childcareTypes": [
                  "SHARED_CHARGE"
               ],
               "giveBath": "YES"
            }
         }
      ]
   }
}

并且我的映射确实显示字段 childcareTypes 已被分析：

{
  "advertisement": {
    "dynamic": "false",
    "properties": {
      "id": {
        "type": "long",
        "store": "yes"
      },
      "childcareWorkerType": {
        "type": "string",
        "store": "yes",
        "index": "analyzed"
      },
      "childcareTypes": {
        "type": "string",
        "store": "yes",
        "index": "analyzed"
      },
      "giveBath": {
        "type": "string",
        "store": "yes",
        "index": "analyzed"
      }
    }
  }
}

谁能解释一下 为什么我的条款查询 returns 0 次点击？

Answer 1

and my mapping does show that the field childcareTypes is analyzed:

这正是您的问题所在：该字段已被分析，但是，terms 查询直接查找术语，这些术语未被分析（请参阅here).

更准确地说，索引值如下所示：

shared_charge
out_of_school

您的 terms 查询搜索：

SHARED_CHARGE
OUT_OF_SCHOOL

您可以像尝试此查询一样检查此行为...

POST /bignibou/_search
{
  "query": {
    "terms": {
      "childcareTypes": [
        "shared_charge",
        "out_of_school"
      ]
    }
  }
}

...您会找到您的文档。

您应该在字段的 not_analyzed 版本上使用之前的查询，或者使用 match 系列中的查询。

Answer 2

之所以会这样，是因为terms不会分析输入。这意味着它将精确搜索 SHARED_CHARGE 和 OUT_OF_SCHOOL（大写字母）。而您将该字段设置为 "index": "analyzed"，这意味着 ES 将使用 standard 分析器来索引数据。

对于 SHARED_CHARGE ES 存储 shared_charge。对于 OUT_OF_SCHOOL ES 商店 out_of_school.

基本 elasticsearch "terms" 查询的问题

Issue with a basic elasticsearch "terms" query

elasticsearch