Elasticsearch | copy_to部分搜索

Question

我有copy_to正確匹配工作，但我無法正確設置與部分匹配。以下是我的映射/設置和查詢與預期和實際結果。

設置：

{ 
    "test": { 
     "settings": { 
     "index": { 
      "analysis": { 
       "filter": { 
        "ngram_filter": { 
        "type": "edge_ngram", 
        "min_gram": "1", 
        "max_gram": "15" 
        } 
       }, 
       "analyzer": { 
        "ngram_analyzer": { 
        "filter": [ 
         "lowercase", 
         "ngram_filter" 
        ], 
        "type": "custom", 
        "tokenizer": "standard" 
        } 
       } 
      }, 
      "number_of_shards": "1", 
      "number_of_replicas": "1", 
      } 
     } 
    } 
} 

映射：

POST /test/_mapping/name 
{ 
    "name": { 
     "properties": { 
     "vital": { 
      "properties": { 
       "first": { 
        "type": "string", 
        "copy_to": "full_name", 
        "term_vector": "yes", 
        "analyzer": "ngram_analyzer", 
        "search_analyzer": "standard" 
       }, 
       "last": { 
        "type": "string", 
        "copy_to": "full_name", 
        "term_vector": "yes", 
        "analyzer": "ngram_analyzer", 
        "search_analyzer": "standard" 
       }, 
       "full_name": { 
        "type": "string", 
        "term_vector": "yes", 
        "analyzer": "ngram_analyzer", 
        "search_analyzer": "standard" 
       } 
      } 
     } 
     } 
    } 
} 

POST：

POST /test/name 
{ 
    "vital": { 
     "first": "Tom", 
     "last": "Doe" 
    } 
} 

現在，當我做搜索...

GET /test/name/_search 
{ 
    "query": { 
    "match": { 
     "full_name": { 
     "query": "Tom Doe", 
     "operator": "and" 
     } 
    } 
    } 
} 

...我找回結果!! Hurrraaaay，但如果我做了搜索....

GET /test/name/_search 
{ 
    "query": { 
    "match": { 
     "full_name": { 
     "query": "Tom Do", 
     "operator": "and" 
     } 
    } 
    } 
} 

...我回來沒有結果:(我想部分匹配爲FULL_NAME工作，以及作爲另一個不是我能夠成功地因部分匹配的名字和姓氏，只是full_name不起作用，我會怎麼做呢？

Answer 1

你在映射中有一個小錯誤，你需要複製fir st和姓氏放到vital.full_name字段中，而不是full_name，否則會在映射的頂層創建一個名爲full_name的新字符串字段，並在標準分析器的頂層顯示該字段（如果運行GET test，則會看到映射中的新字段）：

POST /test/_mapping/name 
{ 
    "name": { 
     "properties": { 
     "vital": { 
      "properties": { 
       "first": { 
        "type": "string", 
        "copy_to": "vital.full_name",  <--- fix this 
        "term_vector": "yes", 
        "analyzer": "ngram_analyzer", 
        "search_analyzer": "standard" 
       }, 
       "last": { 
        "type": "string", 
        "copy_to": "vital.full_name",  <--- fix this 
        "term_vector": "yes", 
        "analyzer": "ngram_analyzer", 
        "search_analyzer": "standard" 
       }, 
       "full_name": { 
        "type": "string", 
        "term_vector": "yes", 
        "analyzer": "ngram_analyzer", 
        "search_analyzer": "standard" 
       } 
      } 
     } 
     } 
    } 
} 

，然後修復您的疑問是這樣的：

POST /test/name/_search 
{ 
    "query": { 
    "match": { 
     "vital.full_name": {   <-- fix this 
     "query": "Tom Doe", 
     "operator": "and" 
     } 
    } 
    } 
} 

POST /test/name/_search 
{ 
    "query": { 
    "match": { 
     "vital.full_name": {   <-- fix this 
     "query": "Tom Do", 
     "operator": "and" 
     } 
    } 
    } 
} 

像您期望雙方會工作。

Answer 2

只是從你映射中刪除"search_analyzer": "standard"，它只是在某些用例中需要的東西，比如自動完成搜索。這裏https://www.elastic.co/guide/en/elasticsearch/guide/master/_index_time_search_as_you_type.html