【ElasticSearch（七）进阶】multi_match多字段匹配、bool复合查询

【ElasticSearch（七）进阶】multi_match多字段匹配，bool复合查询

一、multi_match多字段匹配

例：查询 address 和 city 中任意一项包含 mill urie的结果

GET /bank/_search
{
  "query":{
    "multi_match": {
      "query": "mill urie",
      "fields": ["address","city"]
    }
  }
}

返回结果：

我们发现multi_match也会进行语句的分词，再评分。

{
  "took" : 27,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 4,
      "relation" : "eq"
    },
    "max_score" : 6.5059485,
    "hits" : [
      {
        "_index" : "bank",
        "_type" : "account",
        "_id" : "136",
        "_score" : 6.5059485,
        "_source" : {
          "account_number" : 136,
          "balance" : 45801,
          "firstname" : "Winnie",
          "lastname" : "Holland",
          "age" : 38,
          "gender" : "M",
          "address" : "198 Mill Lane",
          "employer" : "Neteria",
          "email" : "winnieholland@neteria.com",
          "city" : "Urie",
          "state" : "IL"
        }
      },
      {
        "_index" : "bank",
        "_type" : "account",
        "_id" : "970",
        "_score" : 5.4032025,
        "_source" : {
          "account_number" : 970,
          "balance" : 19648,
          "firstname" : "Forbes",
          "lastname" : "Wallace",
          "age" : 28,
          "gender" : "M",
          "address" : "990 Mill Road",
          "employer" : "Pheast",
          "email" : "forbeswallace@pheast.com",
          "city" : "Lopezo",
          "state" : "AK"
        }
      },
     。。。
    ]
  }
}

二、bool复合查询

如果我们面对更加复杂的查询条件需要采用 bool 复合查询

例如：

查询 gender 是 M、address 包含 mill、年龄不能是28、lastname最好是Wallace的结果：

should：最好是，如果查不到也可以不是。匹配到的，得分高。

GET /bank/_search
{
  "query":{
    "bool":{
      "must": [
        {"match": {
           "gender": "M"
        }},
        {"match":{
          "address": "mill"
        }}
      ],
      "must_not": [
        {"match":{
          "age": "18"
        }}
      ],
      "should":[
        {"match":{
          "lastname": "Wallace"
        }}
      ]
    }
  }
}

返回：

{
  "took" : 2,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 3,
      "relation" : "eq"
    },
    "max_score" : 12.585751,
    "hits" : [
      {
        "_index" : "bank",
        "_type" : "account",
        "_id" : "970",
        "_score" : 12.585751,
        "_source" : {
          "account_number" : 970,
          "balance" : 19648,
          "firstname" : "Forbes",
          "lastname" : "Wallace",
          "age" : 28,
          "gender" : "M",
          "address" : "990 Mill Road",
          "employer" : "Pheast",
          "email" : "forbeswallace@pheast.com",
          "city" : "Lopezo",
          "state" : "AK"
        }
      },
      {
        "_index" : "bank",
        "_type" : "account",
        "_id" : "136",
        "_score" : 6.0824604,
        "_source" : {
          "account_number" : 136,
          "balance" : 45801,
          "firstname" : "Winnie",
          "lastname" : "Holland",
          "age" : 38,
          "gender" : "M",
          "address" : "198 Mill Lane",
          "employer" : "Neteria",
          "email" : "winnieholland@neteria.com",
          "city" : "Urie",
          "state" : "IL"
        }
      },
      {
        "_index" : "bank",
        "_type" : "account",
        "_id" : "345",
        "_score" : 6.0824604,
        "_source" : {
          "account_number" : 345,
          "balance" : 9812,
          "firstname" : "Parker",
          "lastname" : "Hines",
          "age" : 38,
          "gender" : "M",
          "address" : "715 Mill Avenue",
          "employer" : "Baluba",
          "email" : "parkerhines@baluba.com",
          "city" : "Blackgum",
          "state" : "KY"
        }
      }
    ]
  }
}