Hi,
is there a way to get just the count of buckets (not the count of docs,
which works i know) of an aggregation without receiving the whole buckets
content?
thx, Tom
- Show quoted text -
른록노트
[Elasticsearch] aggregation에서 doc_count말고 bucket의 개수만 구하는 방법+ 개수에 조건주는 방법 본문
DB/[Elasticsearch]
[Elasticsearch] aggregation에서 doc_count말고 bucket의 개수만 구하는 방법+ 개수에 조건주는 방법
른록 2017. 8. 25. 02:38(질문한 양반 해석)
어그리게이션의 버킷의 개수만 구하는 방법이 있나요?(내가 알고있는 docs의 개수 말고 전체 내용 없이)
(해결법)
at Dec 16, 2014 at 7:02 pm | ⇧ |
Hi Tom,
I think the "Cardinality" aggregation is what you want.
e.g. :
{
...query...
},
"aggregations": {
"totalUniqueUsers": {
"cardinality": {
"field": "username"
}
}
}
-Rich
- Show quoted text -
I think the "Cardinality" aggregation is what you want.
e.g. :
{
...query...
},
"aggregations": {
"totalUniqueUsers": {
"cardinality": {
"field": "username"
}
}
}
-Rich
- Show quoted text -
Cardinality란?
Cardinality AggregationeditA single-value metrics aggregation that calculates an approximate count of distinct values. Values can be extracted either from specific fields in the document or generated by a script.
Cardinality를 사용하면 distinct로 카운트값을 계산한다.
값은 문서의 특정 필드에서 추출하거나 스크립트로 생성 할 수 있습니다.
-버킷 개수에 제한 걸어주기
Table 12. bucket_selector
Parameters
Parameter Name | Description | Required | Default Value |
| The script to run for this aggregation. The script can be inline, file or indexed. (see Scripting for more details) | Required | |
| A map of script variables and their associated path to the buckets we wish to use for the variable (see | Required | |
| The policy to apply when gaps are found in the data (see Dealing with gaps in the dataedit for more details) |
참고사이트
http://grokbase.com/t/gg/elasticsearch/14cg0jk7px/aggregegation-buckets-count
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