如何在Elastic Search中聚合脚本字段？

如何解决如何在Elastic Search中聚合脚本字段？

计算类别是查询中的脚本字段。我想在此脚本字段上再进行一个聚合。可能吗 ？如果可以，请帮帮我。

我的查询：-

{
  "from": 0,"size": 0,"query": {
    "bool": {}
  },"aggs": {
    "stakeholder_category": {
      "terms": {
        "field": "stakeholder_level","size": 214748364
      },"aggs": {
        "Coverage-Calculation": {
          "terms": {
            "field": "stakeholder_name","size": 214748364
          },"aggs": {
            "Total-Hours": {
              "sum": {
                "field": "field_capacity_building_duration"
              }
            },"include_source": {
                      "top_hits": {
                        "size": 1,"_source": {
                          "includes": [
                            "state_location","district_location"
                          ]
                        }
                      }
                    },"Calculated-Category": {
                    "bucket_script": {
                      "buckets_path": {
                        "NumberOfEngagements": "_count","TotalHours":"Total-Hours"
                      },"script": {
                      "lang": "painless","source": """

                          if (params.TotalHours >= 20 && params.NumberOfEngagements >= 2) {
                          return 1;  
                        } else if(params.TotalHours >3) {
                          return 2 ;  
                        }
                          else if(params.TotalHours >3) {
                          return 2 ;  
                        }
                          else if(params.TotalHours >=1 && params.TotalHours <=3) {
                          return 3 ;  
                        }
                        else if(params.TotalHours ==0) {
                          return 4 ;  
                        }
                        
                """
                }
              }
            }
          }
        }
      }
    }
  }
}

从上面的查询中，我需要在脚本字段Calculated-Category上进行汇总。我们可以对脚本字段进行汇总吗？如果是，怎么办？

上述查询的结果将是这样

{
                "key" : "CHUNUSINGH GAUTAM","doc_count" : 1,"include_source" : {
                  "hits" : {
                    "total" : 1,"max_score" : 1.0,"hits" : [
                      {
                        "_index" : "elasticsearch_index_apffatest_coverage_new","_type" : "coverage_new","_id" : "entity:paragraph/3826125:en","_score" : 1.0,"_source" : {
                          "district_location" : [
                            "Raipur"
                          ],"state_location" : [
                            "Chhattisgarh"
                          ]
                        }
                      }
                    ]
                  }
                },"Total-Hours" : {
                  "value" : 0.0
                },"Calculated-Category" : {
                  "value" : 4.0
                }
              },{
                "key" : "SAVITA DHSH test","_id" : "entity:paragraph/3747567:en","Total-Hours" : {
                  "value" : 3.0
                },"Calculated-Category" : {
                  "value" : 3.0
                }
              }

如果计算出的类别具有多个相同的值，则我需要进行汇总，然后将其与计数合并在一起，就像以前的术语字段汇总一样。