带有通配符的弹性搜索不区分大小写的query_string查询 [英] Elasticsearch case-insensitive query_string query with wildcards

问题描述

在我的ES映射中，我有一个'uri'字段，当前设置为not_analysed，我不允许更改映射。我想使用这样的query_string查询来搜索uri部件（这个ES查询是自动生成的，这就是为什么它有点复杂，但我们只关注query_string部分）

In my ES mapping I have an 'uri' field which is currently set to not_analysed and I'm not allowed to change the mapping.I wanted to search for uri parts with a query_string query like this (this ES query is autogenerated, that is why it is a bit complicated but let's just focus on the query_string part)

{
  "sort": [{"updated": {"order": "desc"}}], 
   "query": {
     "bool": {
       "must":[{
         "query_string": {
           "query":"*w3\\.org\\/2014\\/01\\/a*", 
           "lowercase_expanded_terms": true, 
           "default_field": "uri"
         }
       }], 
       "minimum_number_should_match": 1
     }
   }, "size": 50}

现在它通常工作，但我有以下url存储（虚构的url） ： http://w3.org/2014/01/Abc.html 和这个由于A-a的差异，查询不会带回来。将扩展术语设置为false也不能解决这个问题。我应该怎么做这个查询是不区分大小写？

Now it is usually working, but I've the following url stored (fictional url): http://w3.org/2014/01/Abc.html and this query does not bring it back because of the A-a difference. Setting the expanded terms to false also not solves this. What should I do for this query to be case insensitive?

感谢您的帮助提前。

推荐答案

从文档中，您似乎需要一个新的分析器，首先将其转换为小写，然后可以运行搜索。你试过了吗？
http://www.elasticsearch.org /guide/en/elasticsearch/guide/current/sorting-collat​​ions.html

From the docs, it seems like you need a new analyzer that first transforms to lowercase and then can run the search. Have you tried that? http://www.elasticsearch.org/guide/en/elasticsearch/guide/current/sorting-collations.html

当我阅读它，你的模式，smallcase_expanded_terms只适用于扩展，不定期的话
http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/query-dsl-query-string-query.html

lowercase_expanded_terms
通配符，前缀，模糊和范围查询的术语是否要自动更低级别（因为它们不被分析）。默认为


As I read it, your pattern, lowercase_expanded_terms, only applies to expansions, not to regular words http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/query-dsl-query-string-query.html lowercase_expanded_terms Whether terms of wildcard, prefix, fuzzy, and range queries are to be automatically lower-cased or not (since they are not analyzed). Default it true

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