如何进行“分组/最大”查询？ [英] How to do "group by / max" query?

问题描述

我需要按Field1的值对所有记录进行分组，并为每个组计算Field2的最大值。因此，有什么办法可以使最大聚合作用在同一查询中的多个组上？

I need to group all records by a value of Field1, and calculate max value of Field2 for every group. So, is there any way to make max aggregation work over multiple groups within the same query?

推荐答案

GET /yourindex/_search?search_type=count
{
  "aggs": {
    "yourGroup": {
      "terms": {
        "field": "field1",
        "size": 10
      },
      "aggs": {
        "theMax": {
          "max": {
            "field": "field2"
          }
        }
      }
    }
  }
}

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