1. 索引以及數據如下

PUT dateagg
{"mappings": {"properties": {"charge":{"type": "double"},"types":{"type": "keyword"},"create_date":{"type": "date","format": "yyyy-MM-dd||strict_date_optional_time ||epoch_millis||E MMM dd H:m:s z y"}}}
}POST dateagg/_doc/1
{"charge":"900","types":"水果","create_date":"2020-09-01"
}POST dateagg/_doc/2
{"charge":"800","types":"水果","create_date":"2020-09-30"
}POST dateagg/_doc/3
{"charge":"1900","types":"熟食","create_date":"2021-10-01"
}POST dateagg/_doc/4
{"charge":"100","types":"熟食","create_date":"2023-12-31"
}

2. 需求如下
   計算每個月每種類型的銷售總額
3. dsl

GET dateagg/_search
{"query": {"match_all": {}},"aggs": {"types": {"terms": {"field": "types"},"aggs": {"date": {"date_histogram": {"field": "create_date","interval": "month","format": "yyyy-MM","min_doc_count":1},"aggs": {"sum": {"sum": {"field": "charge"}}}}}}}
}

4. python demo

from elasticsearch_dsl import connections,Search,Q as esQ
conn = connections.create_connection(hosts=['192.168.214.134'],port=9200,http_auth="elastic:ellischen")index = 'dateagg'search = Search(using=conn,index=index)
query = esQ('match_all',**{})search.query = query
search.extra(size=0)search.aggs.bucket('types','terms',field="types").bucket('date',"date_histogram",field="create_date",format="yyyy-MM",interval="month",min_doc_count=1).metric("sum","sum",field="charge")
response = search.execute().aggregations.to_dict()
print(response)