ElasticSearch6.x 之词项查询

ゞ浴缸里的玫瑰 2024-02-19 21:16 76阅读 0赞

词项查询：通常用于数字，日期和枚举等结构化数据，而不是全文本字段。

词项查询之rang查询

range查询用于匹配数值型、日期型或字符串型字段在某一范围内的文档。

示例：

创建my\_index,初始化相关数据：

PUT my-index
    
    PUT my-index/doc/1
    {"age":12}
    
    PUT my-index/doc/2
    {"age":18}
    
    PUT my-index/doc/3
    {"age":21}

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob3V6aGl3ZW5nYW5n_size_16_color_FFFFFF_t_70][]

GET  http://192.168.1.74:9200/my_index/doc/_search/
    {
     "query": {
            "range" : {
                "age" : {
                    "gte" : 10,
                    "lte" : 20
                }
            }
        }
    }

示例：日期范围查询

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob3V6aGl3ZW5nYW5n_size_16_color_FFFFFF_t_70 1][]

http://192.168.1.74:9200/website/blog/_search/
    {
     "query": {
            "range" : {
                "postdate" : {
                    "gte" : "2017-01-01",
                    "lte" :  "2017-12-31",
                    "format": "yyyy-MM-dd"
                }
            }
    
        }
    }

词项查询之exists查询

返回字段中至少包含一个非空值的文档.

创建my\_index,初始化相关数据：

PUT my-index
    
    PUT my-index/doc/1
    { "user": "jane" }
    
    PUT my-index/doc/2
    { "user": "" }
    
    PUT my-index/doc/3
    { "user": [] }
    
    PUT my-index/doc/4
    { "user": ["jane", null ] }

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob3V6aGl3ZW5nYW5n_size_16_color_FFFFFF_t_70 2][]

http://192.168.1.74:9200/my_index/doc/_search/
    {
    "query": {
            "exists" : { "field" : "user" }
        }
    }

词项查询之prefix查询（前缀查询）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob3V6aGl3ZW5nYW5n_size_16_color_FFFFFF_t_70 3][]

http://192.168.1.74:9200/my_index/doc/_search/
    {
    "query": {
           "prefix" : { "user" : "j"}
        }
    }

词项查询之wildcard查询（通配符查询）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob3V6aGl3ZW5nYW5n_size_16_color_FFFFFF_t_70 4][]

http://192.168.1.74:9200/website/blog/_search/
    {
    "query": {
           "wildcard" : { "title" : "*之*" }
        }
    }

词项查询之regexp查询（正则查询）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob3V6aGl3ZW5nYW5n_size_16_color_FFFFFF_t_70 5][]

http://192.168.1.74:9200/website/blog/_search/
    {
    "query": {
           "regexp":{
                "title": "黑白"
            }
        }
    }

词项查询之fuzzy查询（模糊查询）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob3V6aGl3ZW5nYW5n_size_16_color_FFFFFF_t_70 6][]

http://192.168.1.74:9200/website/blog/_search/
    {
    "query": {
           "fuzzy":{
                "title": "Spring"
            }
        }
    }

词项查询之type查询（类型查询）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob3V6aGl3ZW5nYW5n_size_16_color_FFFFFF_t_70 7][]

http://192.168.1.74:9200/website/blog/_search/
    {
    "query": {
           "type" : {
                "value" : "blog"
            }
        }
    }

词项查询之ids查询

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob3V6aGl3ZW5nYW5n_size_16_color_FFFFFF_t_70 8][]

http://192.168.1.74:9200/website/_search/
    {
    "query": {
           "ids" : {
                "type" : "blog",
                "values" : ["2", "3"]
            }
        }
    }

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