聚合
POST /es/:target/_search
搜索文档的同时进行聚合
聚合支持
Bucketing
- terms - 支持在关键字类型和数值类型的字段上使用。
- range - 支持在数值类型和日期类型的字段上使用。
- date_range - 支持在日期类型的字段上使用。
- histogram - 支持在数值类型和日期类型的字段上使用。
- date_histogram - 支持在日期类型的字段上使用。
- auto_date_histogram - 支持在日期类型的字段上使用。
指标
- min, max, count, sum - 支持在数值类型的字段上使用。
- avg, weighted_vg - 支持在数值类型的字段上使用。
- Cardinality - 支持在数值类型的字段上使用。
请求示例
POST http://localhost:4080/es/myindex/_search
请求体:
{"query": {"bool": {"should": {"match": {"_all": "Ice Hockey"}}}},"sort": ["-@timestamp"],"from": 0,"size": 20,"aggs": {"Medal": {"terms": {"field": "Medal","size": 10}},"Year": {"range": {"field": "Year","ranges": [{ "from": 1900, "to": 1920},{ "from": 1921, "to": 1950},{ "from": 1951, "to": 2000},{ "from": 2000, "to": 2021}]}},"@timestamp": {"date_range": {"field": "@timestamp","ranges": [{ "from": "2020-01-21T09:22:50.604Z", "to": "2021-01-21T09:22:50.604Z"},{ "from": "2021-01-22T09:22:50.604Z", "to": "2023-01-21T09:22:50.604Z"}]}},"max_Year": {"max": { "field": "Year" }},"min_Year": {"min": { "field": "Year" }},"avg_Year": {"avg": { "field": "Year" }},"weighted_avg_Year": {"weighted_avg": {"field": "Year","weight_field": "Year"}},"sum_Year": {"sum": { "field": "Year" }},"count_Sport": {"count": { "field": "Sport" }}}}
响应
{"took": 250,"timed_out": false,"hits": {"total": {"value": 3051},"max_score": 17.82873837347811,"hits": null},"aggregations": {"@timestamp": {"buckets": [{"key": "[2020-01-21T09:22:50Z,2021-01-21T09:22:50Z)","doc_count": 0},{"key": "[2021-01-22T09:22:50Z,2023-01-21T09:22:50Z)","doc_count": 6102}]},"Medal": {"buckets": [{"key": "gold","doc_count": 1026},{"key": "silver","doc_count": 1024},{"key": "bronze","doc_count": 1001}]},"Year": {"buckets": [{"key": "[1900.000000,1920.000000)","doc_count": 132},{"key": "[1921.000000,1950.000000)","doc_count": 2292},{"key": "[1951.000000,2000.000000)","doc_count": 9822},{"key": "[2000.000000,2021.000000)","doc_count": 5646}]},"avg_Year": {"value": 1980.4818092428711},"count_Sport": {"value": 3051},"max_Year": {"value": 2014},"min_Year": {"value": 1908},"sum_Year": {"value": 36254700},"weighted_avg_Year": {"value": 1980.4818092428711}},"error": ""}
