文章目錄

• 概述
• 官方指導
• • Metrics Aggregations
  • Min Aggregation
  • Max Aggregation
  • Sum Aggregation
• 案例：統計每種顏色電視最大最小價格

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概述

繼續跟中華石杉老師學習ES，第35篇

課程地址： https://www.roncoo.com/view/55

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官方指導

Metrics Aggregations

• count：bucket，terms，自動就會有一個doc_count，就相當于是count

• avg：avg aggs，求平均值

• max：求一個bucket內，指定field值最大的那個數據

• min：求一個bucket內，指定field值最小的那個數據

• sum：求一個bucket內，指定field值的總和

太多了，挑幾個常用的說吧

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Min Aggregation

Min Aggregation ： 戳這里

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Max Aggregation

Max Aggregation ： 戳這里

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Sum Aggregation

Sum Aggregation： 戳這里

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案例：統計每種顏色電視最大最小價格

原始數據：

DSL:

#統計每種顏色電視最大最小價格 GET /tvs/sales/_search {"size": 0,"aggs": {"colors": {"terms": {"field": "color"},"aggs": {"avg_price": {"avg": {"field": "price"}},"min_price": {"min": {"field": "price"}},"max_price": {"max": {"field": "price"}},"sum_price": {"sum": {"field": "price"}}}}} }

返回：

{"took": 4,"timed_out": false,"_shards": {"total": 5,"successful": 5,"skipped": 0,"failed": 0},"hits": {"total": 8,"max_score": 0,"hits": []},"aggregations": {"color": {"doc_count_error_upper_bound": 0,"sum_other_doc_count": 0,"buckets": [{"key": "紅色","doc_count": 4,"max_price": {"value": 8000},"min_price": {"value": 1000},"avg_price": {"value": 3250},"sum_price": {"value": 13000}},{"key": "綠色","doc_count": 2,"max_price": {"value": 3000},"min_price": {"value": 1200},"avg_price": {"value": 2100},"sum_price": {"value": 4200}},{"key": "藍色","doc_count": 2,"max_price": {"value": 2500},"min_price": {"value": 1500},"avg_price": {"value": 2000},"sum_price": {"value": 4000}}]}} }

總結

以上是生活随笔為你收集整理的白话Elasticsearch35-深入聚合数据分析之案例实战更多metrics用法：统计每种颜色电视最大最小价格的全部內容，希望文章能夠幫你解決所遇到的問題。

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