Elasticsearch是一个开源的分布式搜索和分析引擎,具有强大的全文搜索、结构化查询、分析能力。在Elasticsearch查询中,组合OR、AND和IN运算符用于构建更复杂的查询语句。 组合OR运算符: 概念:OR运算符用于在查询中匹配满足任一条件的文档。 优势:通过使用OR运算符,可以扩大查询结果的范围,使得查询能够匹配满足多个条件...
参看elasticsearch官方文档,对should的说明如下: should The clause (query) should appear in the matching document. If the bool query is in a query context and has a must or filter clause then a document will match the bool query even if none of the should queries match. In this case these ...
Elasticsearch的bool query和and or查询(should,must,must not),Compoundqueries之Boolqueryfilter和must的区别(相关性评分)andor查询的匹配问题
还有一个问题,就是同义词的or检索问题,比如query是a,a和b互为同义词,那么query树就是a | b。这个时候发现,b这个词的bm25值远远高于a词的bm25值,因为可能b词更稀有,idf更高,分数远超过a。这个导致最后含有b的doc都排在前面。虽然a词是原词,b词是联想同义词,b词有一个defactor降权,但是远远不够。我的解决...
参看elasticsearch官方文档,对should的说明如下: should The clause (query) should appear in the matching document. If the bool query is in a query context and has a must or filter clause then a document will match the bool query even if none of the should queries match. In this case these ...
可以bai使用星号代替零个、单个或多个du字符。如果正在查找以zhiAEW开头的一个文件,但dao不记得文件名...
ElasticSearch筛选器中的OR和and子句组合 elasticsearch 我有一个ElasticSearch 7.7查询,其中包含几个过滤器(我不想将其计入分数的条件),如下所示: { "from": 0, "size": 100, "query": { "bool": { "must": { "match_all": {} }, "filter": [ { "term": { "type": 4 } }, { "term": ...
初次接触 ElasticSearch,对它的 filter 语法还不熟悉,自己尝试模拟以下 SQL 语句,但 ElasticSearch 语法解析一直失败,说语法错误。错误的地方应该在 or 这个条件,因为去掉该条件,这个语句是可以执行的。求大神帮忙,谢谢! SELECT * FROM users WHERE sex = 'male' AND (city IN ('beijing', 'shanghai') OR home...
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<groupId>org.elasticsearch.client</groupId> <artifactId>transport</artifactId> <version>5.6.1</version> </dependency> and select * from user where about='中华人民共和国' and firstName=‘张’ QueryBuilders.boolQuery().must(QueryBuilders.termQuery("about","中华人民共和国")).must(QueryBuilders...