Aggregations（聚合）
https://www.elastic.co/guide/en/elasticsearch/reference/8.8/search-aggregations.html#search-aggregations
An aggregation summarizes your data as metrics, statistics, or other analytics. Aggregations help you answer questions like:
聚合将您的数据汇总为度量、统计或其他分析数据。聚合有助于回答以下问题：
标签：search,聚合,精讲,Aggregations,aggregations,Elasticsearch From： https://www.cnblogs.com/zuoyang/p/17479631.html