ElasticSearch聚合：每个聚合排除一个过滤器 [英] ElasticSearch aggregation: exclude one filter per aggregation

问题描述

我想过滤掉字段A等于a的文档，我想同时打开字段A，不包括以前的过滤器。
我知道你可以把过滤器'外部'查询，以获得没有应用过滤器的方面，如：

ElasticSearch

  {
query：{match_all：{}}，
filter：{term：{ A：a}}，
facets：{
A：{terms：{field：A}} //这应该排除过滤器A ：a 
} 
} 
  

SOLR

 & q =：*：* 
& fq = {！tag = Aa} A：a 
& facet = true& ; facet.field = {！ex = Aa} A 
  

这是非常好的，但如果我有多个过滤器和面，每个应该排除彼此？
示例：

  filter = A：a 
 filter = B：b 
 filter = C：c 
 
 facet = {exclude filter A：a} A 
 facet = {exclude filter B：b} B 
 facet = {exclude filter C：c} C 
  

就是说，对于facet AI，要保留除A：a之外的所有过滤器，除B外：b，等等。
最明显的方法是做n个查询（每个n面都有一个），但是我想远离这个。

解决方案

全局范围提供对每个文档的访问，然后可以添加用于主查询的相同过滤器。

此相关主题全球范围的示例

您是否可以就post_filter提供有关性能问题的反馈？

I want to filter out documents whose field 'A' is equal to 'a', and I want to facet the field 'A' at the same time, excluding of course the previous filter. I know that you can put the filter 'outside' the query in order to get the facets without that filter applied, like:

ElasticSearch

{
   "query : { "match_all" : { } },  
   "filter" : { "term : { "A" : "a" } },
   "facets" : { 
      "A" : { "terms" : { "field" : "A" } }  //this should exclude the filter A:a
   }
}

SOLR

&q=:*:*
&fq={!tag=Aa}A:a
&facet=true&facet.field={!ex=Aa}A

This is very nice, but what happens if i have multiple filters and facets that each one should exclude each other? Example:

filter=A:a
filter=B:b
filter=C:c

facet={exclude filter A:a}A
facet={exclude filter B:b}B
facet={exclude filter C:c}C

That is, for facet A I want to keep all filters except A:a, for facet B all except B:b, and so on. The most obvious way would be to do n queries (one per each of the n facets), but I'd like to stay away from that.

解决方案

The global scope provides access to every document, you can then add the same filters you used for the main query.

I gave an example with global scope in this related topic

Could you give any feedback about performance issue with post_filter ?

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