我想获得一个新字段，该字段告诉我group_by_gender聚合内任何地方的max_yes_percentage和min_yes_percentage（较小的值要减去另一个值）之间的区别。
我尝试使用bucket_script进行减法，但是由于无法将org.elasticsearch.search.aggregations.bucket.filter.InternalFilter强制转换为org.elasticsearch.search.aggregations.InternalMultiBucketAggregation，因此无法正常工作。那是有道理的，基本上我没有其他线索可以做到这一点。
我的查询是：
POST /vote_votes/_search
{
"query": {
"nested" : {
"path" : "vote",
"score_mode" : "none",
"query": {
"bool": {
"filter": {
"term": {
"vote.id": 14
}
}
}
}
}
},
"size": 0,
"aggs": {
"group_by_gender": {
"filter": {
"range": {
"id": {
"gte": 0
}
}
},
"aggs": {
"gender": {
"terms": {
"field": "gender"
},
"aggs": {
"rated_yes": {
"filter": {
"term": {
"rate": "yes"
}
}
},
"rated_no": {
"filter": {
"term": {
"rate": "no"
}
}
},
"yes_percentage": {
"bucket_script": {
"buckets_path": {
"ratedYes": "rated_yes._count",
"ratedNo": "rated_no._count"
},
"script": """
return (params.ratedYes/(params.ratedYes+params.ratedNo)) * 100;
"""
}
}
}
},
"max_yes_percentage": {
"max_bucket": {
"buckets_path": "gender>yes_percentage",
"gap_policy": "skip"
}
},
"min_yes_percentage": {
"min_bucket": {
"buckets_path": "gender>yes_percentage",
"gap_policy": "skip"
}
}
}
}
}
}
响应结果：
{
"took": 2,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 503,
"max_score": 0,
"hits": []
},
"aggregations": {
"group_by_gender": {
"doc_count": 503,
"gender": {
"doc_count_error_upper_bound": 0,
"sum_other_doc_count": 0,
"buckets": [
{
"key": "female",
"doc_count": 259,
"rated_yes": {
"doc_count": 135
},
"rated_no": {
"doc_count": 124
},
"yes_percentage": {
"value": 52.123552123552116
}
},
{
"key": "male",
"doc_count": 244,
"rated_yes": {
"doc_count": 121
},
"rated_no": {
"doc_count": 123
},
"yes_percentage": {
"value": 49.59016393442623
}
}
]
},
"max_yes_percentage": {
"value": 52.123552123552116,
"keys": [
"female"
]
},
"min_yes_percentage": {
"value": 49.59016393442623,
"keys": [
"male"
]
}
}
}
}