ElasticSearch学习笔记 | Match和Match_phrase匹配搜索

男娘i 2023-01-16 11:14 135阅读 0赞

[https://www.bilibili.com/video/BV1py4y1r7Ar?p=12&spm\_id\_from=pageDriver][https_www.bilibili.com_video_BV1py4y1r7Ar_p_12_spm_id_from_pageDriver]

本文测试数据为官方提供的测试数据，导入方法在学习笔记本章节第一篇中：https://blog.csdn.net/qq\_20051535/article/details/113242821

一、基本类型（非字符串），精确匹配  
查询 account\_number 是 20 的所有结果：

GET bank/\_search  
\{  
  "query": \{  
    "match": \{  
      "account\_number": 20  
    \}  
  \}  
\}  
返回内容：

\{  
  "took" : 6,  
  "timed\_out" : false,  
  "\_shards" : \{  
    "total" : 1,  
    "successful" : 1,  
    "skipped" : 0,  
    "failed" : 0  
  \},  
  "hits" : \{  
    "total" : \{  
      "value" : 1,  
      "relation" : "eq"  
    \},  
    "max\_score" : 1.0,  
    "hits" : \[  
      \{  
        "\_index" : "bank",  
        "\_type" : "account",  
        "\_id" : "20",  
        "\_score" : 1.0,  
        "\_source" : \{  
          "account\_number" : 20,  
          "balance" : 16418,  
          "firstname" : "Elinor",  
          "lastname" : "Ratliff",  
          "age" : 36,  
          "gender" : "M",  
          "address" : "282 Kings Place",  
          "employer" : "Scentric",  
          "email" : "elinorratliff@scentric.com",  
          "city" : "Ribera",  
          "state" : "WA"  
        \}  
      \}  
    \]  
  \}  
\}  
二、字符串模糊匹配查询  
比如我们希望查询所有 address 中包含 Kings 的数据：

GET bank/\_search  
\{  
  "query": \{  
    "match": \{  
      "address": "Kings"  
    \}  
  \}  
\}  
返回结果：

可以看到 “282 Kings Place” 和 “305 Kings Hwy” 两条记录都返回了

全文检索会按照评分进行排序，会对检索条件进行分词匹配。

\{  
  "took" : 157,  
  "timed\_out" : false,  
  "\_shards" : \{  
    "total" : 1,  
    "successful" : 1,  
    "skipped" : 0,  
    "failed" : 0  
  \},  
  "hits" : \{  
    "total" : \{  
      "value" : 2,  
      "relation" : "eq"  
    \},  
    "max\_score" : 5.990829,  
    "hits" : \[  
      \{  
        "\_index" : "bank",  
        "\_type" : "account",  
        "\_id" : "20",  
        "\_score" : 5.990829,  
        "\_source" : \{  
          "account\_number" : 20,  
          "balance" : 16418,  
          "firstname" : "Elinor",  
          "lastname" : "Ratliff",  
          "age" : 36,  
          "gender" : "M",  
          "address" : "282 Kings Place",  
          "employer" : "Scentric",  
          "email" : "elinorratliff@scentric.com",  
          "city" : "Ribera",  
          "state" : "WA"  
        \}  
      \},  
      \{  
        "\_index" : "bank",  
        "\_type" : "account",  
        "\_id" : "722",  
        "\_score" : 5.990829,  
        "\_source" : \{  
          "account\_number" : 722,  
          "balance" : 27256,  
          "firstname" : "Roberts",  
          "lastname" : "Beasley",  
          "age" : 34,  
          "gender" : "F",  
          "address" : "305 Kings Hwy",  
          "employer" : "Quintity",  
          "email" : "robertsbeasley@quintity.com",  
          "city" : "Hayden",  
          "state" : "PA"  
        \}  
      \}  
    \]  
  \}  
\}  
三、Match\_phrase 短语匹配  
默认的match搜索会对搜索内容进行分词，比如：mill lane 会分成 mill 和 lane 之后搜索的结果可能包含仅有其中一项的结果，但是此类结果分数较低。

如果不希望被分词可以使用 match\_phrase 进行搜索

例子：

查询 地址 包含 mill lane 的结果：

GET bank/\_search  
\{  
  "query": \{  
    "match\_phrase": \{  
      "address": "Mill Lane"  
    \}  
  \}  
\}  
返回结果：

\{  
  "took" : 439,  
  "timed\_out" : false,  
  "\_shards" : \{  
    "total" : 1,  
    "successful" : 1,  
    "skipped" : 0,  
    "failed" : 0  
  \},  
  "hits" : \{  
    "total" : \{  
      "value" : 1,  
      "relation" : "eq"  
    \},  
    "max\_score" : 9.507477,  
    "hits" : \[  
      \{  
        "\_index" : "bank",  
        "\_type" : "account",  
        "\_id" : "136",  
        "\_score" : 9.507477,  
        "\_source" : \{  
          "account\_number" : 136,  
          "balance" : 45801,  
          "firstname" : "Winnie",  
          "lastname" : "Holland",  
          "age" : 38,  
          "gender" : "M",  
          "address" : "198 Mill Lane",  
          "employer" : "Neteria",  
          "email" : "winnieholland\#neteria.com",  
          "city" : "Urie",  
          "state" : "IL"  
        \}  
      \}  
    \]  
  \}  
\}  
   
————————————————  
版权声明：本文为CSDN博主「北鹤M」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。  
原文链接：https://blog.csdn.net/qq\_20051535/article/details/113244550

[https_www.bilibili.com_video_BV1py4y1r7Ar_p_12_spm_id_from_pageDriver]: https://www.bilibili.com/video/BV1py4y1r7Ar?p=12&spm_id_from=pageDriver