elasticSearch 设置字段的keyword属性

阳光穿透心脏的1/2处 2021-09-28 03:26 675阅读 0赞

es查询时候我们经常会遇到对text类型的文档进行查询或者聚合时候，发现聚合的字段被es分词了，所以这个时候就需要我们对该字段设置一个keyword属性然后，将该keyword属性的type设置为keyword这样我们在查询或者在聚合时候`可以通过该属性下的keyword字段就可以实现完全匹配`。  
下面我们是对一个nested对象下的name属性设置的keyword属性，简单属性设置就更容易了，把下面设置属性语句的第二个properties上面的put下面的语句删掉就可以。  
希望对您有帮助。

\#创建映射

PUT /my_store/_mapping/products?pretty
    {
      "properties": {
        "price": {
          "type": "long"
        },
        "name": {
          "type": "text"
        },
        "owner": {
          "type": "nested",
          "properties": {
            "name": {
              "type": "text"
            },
            "age": {
              "type": "long"
            }
          }
        }
      }
    }

插入数据

POST /my_store/products/_bulk
    { "index": { "_id": 1 }}
    { "price" : 10, "name" : "XHDK-A-1293-#fJ3","owner":{"name" :"西安","age":30}}
    { "index": { "_id": 2 }}
    { "price" : 20, "name" : "KDKE-B-9947-#kL5" ,"owner":{"name" :"西安","age":50}}
    { "index": { "_id": 3 }}
    { "price" : 30, "name" : "JODL-X-1937-#pV7","owner":{"name" :"榆林","age":20} }
    { "index": { "_id": 4 }}
    { "price" : 40, "name" : "QQPX-R-3956-#aD8","owner":{"name" :"榆林","age":10} }

给nested对象下的name属性设置keyword  
\#[owner.name][]

PUT /my_s*/_mapping/products
        {
          "properties": {
            "owner": {
              "type": "nested",
              "properties": {
                "name": {
                  "type": "text",
                  "fields": {
                    "keyword": {
                      "type": "keyword",
                      "ignore_above": 256
                    }
                  }
                }
              }
            }
          }
        }

[owner.name]: http://owner.name