ElasticSearch聚合：每个聚合排除一个过滤器

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。

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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