Elasticsearch 中的基本查询没有结果答案

【问题标题】：No results for basic query in ElasticsearchElasticsearch 中的基本查询没有结果
【发布时间】：2022-11-29 14:48:36
【问题描述】：

我正在尝试在本地设置一个基本的 Elasticsearch 索引并使用 Kibana，当我进行 match_all 搜索时，我能够获得所有结果，但我已经尝试了简单匹配查询的多种变体，但都没有用。

我的映射：

{
  "recipes-v1": {
    "mappings": {
      "dynamic": "false",
      "properties": {
        "description": {
          "type": "keyword"
        },
        "ingredients": {
          "type": "text"
        },
        "instructions": {
          "type": "keyword"
        },
        "title": {
          "type": "keyword"
        }
      }
    }
  }
}

match_all 查询的结果：

{
  "took": 0,
  "timed_out": false,
  "_shards": {
    "total": 1,
    "successful": 1,
    "skipped": 0,
    "failed": 0
  },
  "hits": {
    "total": {
      "value": 2,
      "relation": "eq"
    },
    "max_score": 1,
    "hits": [
      {
        "_index": "recipes-v1",
        "_id": "0",
        "_score": 1,
        "_source": {
          "Name": "Alfredo Sauce",
          "Description": "Cheesy alfredo sauce that is delicious. Definitely not vegan",
          "Ingredients": [
            "1/2 cup butter",
            "3 cloves garlic",
            "3/4 cup heavy cream",
            "1/2 cup parmesan cheese",
            "1/2 cup romano cheese",
            "salt",
            "pepper",
            "italian seasoning"
          ],
          "Instructions": [
            "Melt butter in a saucepan then add heavy cream and combine on medium low heat",
            "Let the mixture simmer for 2 minutes then add garlic, salt, pepper, and italian seasoning to taste. Let simmer until fragrent (about 1 minute)",
            "Lower heat and add both cheeses, stirring until relatively melted",
            "Let simmer, stirring often to prevent getting stuck to the bottom"
          ]
        }
      },
      {
        "_index": "recipes-v1",
        "_id": "1",
        "_score": 1,
        "_source": {
          "Name": "Shrimp Scampi",
          "Description": "Definitely not just Gordon Ramsay's shrimp scampi minus capers",
          "Ingredients": [
            "1 lb shrimp",
            "2 lemons",
            "Zest of lemons",
            "3 cloves garlic"
          ],
          "Instructions": [
            "Do things",
            "Do more things"
          ]
        }
      }
    ]
  }
}

我试过删除索引并重新创建它以及 Alfredo、alfredo、alfredo sauce、AlfredoSauce 等的每个变体，但都没有用。请帮忙这些查询的所有变体都不会产生任何命中：

POST recipes-v1/_search
{
  "query": {
    "match": {
      "title": {
        "query": "alfredo"
      }
    }
  }
}

POST recipes-v1/_search
{
  "query": {
    "bool": {
      "should": {
        "match": {
          "name": "alfredo"
        }
      }
    }
  }
}

【问题讨论】：

标签： elasticsearch elasticsearch-dsl

【解决方案1】：

您的文档包含大写的字段名称，即 Description、Ingredients 等

您的映射包含相同的字段名称但小写，即 description、ingredients 等，并且禁用了动态映射 (dynamic: false)，因此不会动态创建和索引新字段。

您需要更改映射或文档，以便两者都具有完全相同的字段名称.

【讨论】：