(13)ElasticSearch match查询

match 查询知道分词器的存在,会对field进行分词操作,然后再查询。而term不会分词,会把field当成一个整体查询。(备注:数据来自于上一篇

1、用match查询name是zhaoliu或者zhaoming的,能查出两条记录,而用term查询不出来,因为倒排索引列表中没有 "zhaoliu zhaoming"。如下:

GET /lib3/user/_search
{
  "query":{
    "match":{
      "name":"zhaoliu zhaoming"
    }
  }
}

结果如下:

{
  "took": 2,
  "timed_out": false,
  "_shards": {
    "total": 3,
    "successful": 3,
    "skipped": 0,
    "failed": 0
  },
  "hits": {
    "total": 2,
    "max_score": 0.9808292,
    "hits": [
      {
        "_index": "lib3",
        "_type": "user",
        "_id": "2",
        "_score": 0.9808292,
        "_source": {
          "name": "zhaoming",
          "address": "bei jing hai dian qu qing he zhen",
          "age": 20,
          "birthday": "1998-10-12",
          "interests": "xi huan hejiu,duanlian,changge"
        }
      },
      {
        "_index": "lib3",
        "_type": "user",
        "_id": "1",
        "_score": 0.6931472,
        "_source": {
          "name": "zhaoliu",
          "address": "hei long jiang sheng tie ling shi",
          "age": 50,
          "birthday": "1970-12-12",
          "interests": "xi huang hejiu,duanlian,lvyou"
        }
      }
    ]
  }
}

换成term

GET /lib3/user/_search
{
  "query":{
    "term":{
      "name":"zhaoliu zhaoming"
    }
  }
}

结果如下:

{
  "took": 2,
  "timed_out": false,
  "_shards": {
    "total": 3,
    "successful": 3,
    "skipped": 0,
    "failed": 0
  },
  "hits": {
    "total": 0,
    "max_score": null,
    "hits": []
  }
}

2、查询年龄是20的

GET /lib3/user/_search
{
  "query":{
      "match":{"age":20
      }
    }
}

3、查询所有的,match_all

GET /lib3/user/_search
{
  "query":{
    "match_all":{}
  }
}

4、可以指定多个字段,multi_match。如下:interests或者name中含有lvyou的都会搜索出来。

GET /lib3/user/_search
{
  "query":{
    "multi_match":{
      "query":"lvyou","fields":["interests","name"]
    }
  }
}

4、短语匹配 match_phrase,ElasticSearch引擎首先分析(analyze)查询字符串,从分析后的文本中构建短语查询,这意味着必须匹配短语中的所有分词,并且保证各个分词的相对位置不变。(理解为完全匹配)。如下第一个不能查询到文档,第二个可以查询到文档。

GET /lib3/user/_search
{
    "query":{
        "match_phrase":{
            "interests":"duanlian,shuoxiangsheng"
        }
    }
}

GET /lib3/user/_search
{
    "query":{
        "match_phrase":{
            "interests":"duanlian,changge"
        }
    }
}

5、指明需要哪些字段,_source。

  (5.1)查询 interests 是 changge,结果中只显示 address、name字段:

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GET /lib3/user/_search
{
    "_source":["address","name"],
    "query":{
        "match":{
            "interests":"changge"
        }
    }
}

  (5.2)查询所有的,结果只显示name,address字段

GET /lib3/user/_search
{
    "query":{
        "match_all":{}
    },
    "_source":{
        "includes":["name","address"]
    }
}

  (5.3)查询所有的,结果不包含age、birthday字段

GET /lib3/user/_search
{
    "query":{
        "match_all":{}
    },
    "_source":{
        "excludes":["age","birthday"]
    }
}

  (5.4)通配符。查询所有的,字段名以addr开头,不包括name,不包括以bir开头的字段

GET /lib3/user/_search
{
    "_source":{
        "includes":"addr*",
        "excludes":["name","bir*"]
    },
    "query":{
        "match_all":{}
    }
}

6、排序。使用sort实现排序:desc降序,asc升序

GET /lib3/user/_search
{
    "query":{
        "match_all":{}
        },
        "sort":{
            "age":{"order":"desc"}
        }
}

7、前缀匹配查询。查询出name以zhao开头的文档

GET /lib3/user/_search
{
    "query":{
        "match_phrase_prefix":{
            "name":{
                "query":"zhao"
            }
        }
    }
}

8、范围查询range。参数:from,to,include_lower,include_upper,boost。

  include_lower:是否包含范围的左边界,默认是true,

  include_upper:是否包含范围的右边界,默认是true

GET /lib3/user/_search
{
    "query":{
        "range":{
            "birthday":{
                "from":"1990-10-10",
                "to":"2018-05-01"
            }
        }
    }
}
GET /lib3/user/_search
{
    "query":{
        "range":{
            "age":{
                "from":20,
                "to":25,
                "include_lower":true,
                "include_upper":false
            }
        }
    }
}

8、wildcard查询。允许使用通配符*和?来进行查询

  *代表0个或者多个字符
  ?代表任意一个字符

GET /lib3/user/_search
{
    "query":{
        "wildcard":{
            "name":"li?i"
        }
    }
}

9、fuzzy 实现模糊查询。

  value:查询的关键字
  boost:查询的权值,默认值是1.0
  min_similarity:设置匹配的最小相似度,默认值为 0.5,对于字符串,取值
         为0-1(包括0和1);对于数值 ,取值可能大于1;对于日期型取值为1d,1m等 ,1d就代表1天
  prefix_length:指明区分词项的共同前缀长度,默认是0
  max_expansions:查询中的词项可以扩展的数目,默认可以无限大

  如下,name的值是zholiu可以查询出name是zhaoliu的文档,interests的值是chagge可以查询出interests的值是chagge的文档

GET /lib3/user/_search
{
    "query":{
        "fuzzy":{
            "name":"zholiu"
        }
    }
}
GET /lib3/user/_search
{
    "query":{
        "fuzzy":{
            "interests":{
                "value":"chagge"
            }
        }
    }
}

10、高亮查询:highlight,搜索出来的文档,在搜索关键字的地方加了标签,如<em>changge</em>,下面是个示例。

GET /lib3/user/_search
{
    "query":{
        "match":{
            "interests":"changge"
        }
    },
    "highlight":{
        "fields":{
            "interests":{}
        }
    }
}

结果如下:

{
  "took": 83,
  "timed_out": false,
  "_shards": {
    "total": 3,
    "successful": 3,
    "skipped": 0,
    "failed": 0
  },
  "hits": {
    "total": 3,
    "max_score": 0.6931472,
    "hits": [
      {
        "_index": "lib3",
        "_type": "user",
        "_id": "3",
        "_score": 0.6931472,
        "_source": {
          "name": "lisi",
          "address": "bei jing hai dian qu qing he zhen",
          "age": 23,
          "birthday": "1998-10-12",
          "interests": "xi huan hejiu,duanlian,changge"
        },
        "highlight": {
          "interests": [
            "xi huan hejiu,duanlian,<em>changge</em>"
          ]
        }
      },
      {
        "_index": "lib3",
        "_type": "user",
        "_id": "2",
        "_score": 0.47000363,
        "_source": {
          "name": "zhaoming",
          "address": "bei jing hai dian qu qing he zhen",
          "age": 20,
          "birthday": "1998-10-12",
          "interests": "xi huan hejiu,duanlian,changge"
        },
        "highlight": {
          "interests": [
            "xi huan hejiu,duanlian,<em>changge</em>"
          ]
        }
      },
      {
        "_index": "lib3",
        "_type": "user",
        "_id": "5",
        "_score": 0.47000363,
        "_source": {
          "name": "zhangsan",
          "address": "bei jing chao yang qu",
          "age": 29,
          "birthday": "1988-10-12",
          "interests": "xi huan tingyinyue,changge,tiaowu"
        },
        "highlight": {
          "interests": [
            "xi huan tingyinyue,<em>changge</em>,tiaowu"
          ]
        }
      }
    ]
  }
}

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转载自www.cnblogs.com/javasl/p/11405391.html