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                # Span Field Masking 查詢 原文鏈接 : [https://www.elastic.co/guide/en/elasticsearch/reference/5.4/query-dsl-span-field-masking-query.html](https://www.elastic.co/guide/en/elasticsearch/reference/5.4/query-dsl-span-field-masking-query.html) 譯文鏈接 : [http://www.apache.wiki/pages/viewpage.action?pageId=10029293](http://www.apache.wiki/pages/viewpage.action?pageId=10029293) 貢獻者 : [片刻](/display/~jiangzhonglian) [ApacheCN](/display/~apachecn) [Apache中文網](/display/~apachechina) 包裝器允許span查詢通過欺騙他們的搜索字段來參與復合單字段跨度查詢。跨域字段屏蔽查詢映射到Lucene的SpanFieldMaskingQuery 這可以用來支持像`span-near`?或?`span-or`不同字段的查詢,這通常不被允許。 當使用多個分析器對同一內容進行索引時,跨域字段屏蔽查詢與多字段非常重要。例如,我們可以使用標準分析器對一個字段進行索引,該分析器將文本分解成單詞,再次用英文分析器將單詞寫入其根形式。 例: ``` GET /_search { "query": { "span_near": { "clauses": [ { "span_term": { "text": "quick brown" } }, { "field_masking_span": { "query": { "span_term": { "text.stems": "fox" } }, "field": "text" } } ], "slop": 5, "in_order": false } } } ``` 注意:作為跨域掩碼查詢返回掩蔽字段,使用提供的字段名稱的規范進行評分。這可能會導致意想不到的得分行為。
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