groupby elasticsearch

?

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GET usertag/usertag/_search {     "query": {         "match": {             "tagname": "春节"         }     },     "size": 0,     "aggs": {         "myname1": {             "terms": {                 "field": "id.keyword"             },             "aggs": {                 "myname2": {                     "terms": {                         "field": "username.keyword"                     }                 }             }         }     } }