Elasticsearch Nest聚合分组取最小值查询

取产品的最低价

注：产品价格为区间价格，nested类型

{  "query": {    "bool": {      "must": [        {          "term": {            "model": "LP3985IM5X-3.3"          }        }      ],      "must_not": [],      "should": []    }  },  "from": 0,  "size": 10,  "sort": [],  "aggs": {    "top_tag_hits": {      "terms": {        "field": "model"      },      "aggs": {        "stockprice": {          "nested": {            "path": "stockPrice"          },          "aggs": {            "minprice": {              "min": {                "field": "stockPrice.price"              }            }          }        }      }    }  }}public PUB_StockSearchResult SearchMinPrice(PUB_StockSearch param)        {            PUB_StockSearchResult result = new PUB_StockSearchResult();            result.ResultList = new List<ES_PUB_StockResult>();            if (param.ModelArr == null || param.ModelArr.Length == 0)            {                return result;            }            QueryContainer query = new TermsQuery() { Field = ES_PUB_StockField.Model, Terms = param.ModelArr };            TermsAggregation aggs = new TermsAggregation("top_tag_hits")            {                Field = ES_PUB_StockField.Model,                Aggregations = new NestedAggregation("stockprice")                {                    Path = "stockPrice",                    Aggregations = new MinAggregation("minprice", "stockPrice.price")                }            };            var searchRequest = new SearchRequest<ES_PUB_Stock>();            searchRequest.Query = query;            searchRequest.From = 0;            searchRequest.Aggregations = aggs;            searchRequest.Size = 1000;            var response = client.Search<ES_PUB_Stock>(searchRequest);            result.Total = response.Total;            var states = response.Aggs.Terms("top_tag_hits");            foreach (var state in states.Buckets)            {                var topStateHits = state.Nested("stockprice").Min("minprice").Value;                if (topStateHits != null)                {                    ES_PUB_StockResult resultItem = new ES_PUB_StockResult();                    resultItem.Model = state.Key;                    resultItem.Price = Convert.ToDecimal(topStateHits);                    result.ResultList.Add(resultItem);                }            }            return result;        }