360SDN.COM

Elasticsearch学习之嵌套聚合,下钻分析,聚合分析

来源:  2018-08-31 14:24:11    评论:0点击:

来源:https://www.cnblogs.com/sunfie/p/7019835.html

1. 计算每个tag下的商品数量

  GET /ecommerce/product/_search
  {
    "aggs": {
      "group_by_tags": {
        "terms": { "field": "tags" }
      }
    }
  }

2. 将文本field的fielddata属性设置为true

  PUT /ecommerce/_mapping/product
  {
    "properties": {
      "tags": {
        "type": "text",
        "fielddata": true
      }
    }
  }

  GET /ecommerce/product/_search
  {
    "size": 0,
      "aggs": {
        "all_tags": {
        "terms": { "field": "tags" }
      }
    }
  }

3. 对名称中包含yagao的商品,计算每个tag下的商品数量

  GET /ecommerce/product/_search
  {
    "size": 0,
    "query": {
      "match": {
        "name": "yagao"
      }
    },
    "aggs": {
      "all_tags": {
        "terms": {
          "field": "tags"
        }
      }
    }
  }

4. 先分组,再算每组的平均值,计算每个tag下的商品的平均价格

  GET /ecommerce/product/_search
  {
    "size": 0,
    "aggs" : {
      "group_by_tags" : {
        "terms" : { "field" : "tags" },
        "aggs" : {
          "avg_price" : {
            "avg" : { "field" : "price" }
          }
        }
      }
    }
  }

5. 计算每个tag下的商品的平均价格,并且按照平均价格降序排序

  GET /ecommerce/product/_search
  {
    "size": 0,
    "aggs" : {
      "all_tags" : {
        "terms" : { "field" : "tags", "order": { "avg_price": "desc" } },
        "aggs" : {
          "avg_price" : {
            "avg" : { "field" : "price" }
          }
        }
      }
    }
  }

6. 按照指定的价格范围区间进行分组,然后在每组内再按照tag进行分组,最后再计算每组的平均价格

  GET /ecommerce/product/_search
  {
    "size": 0,
    "aggs": {
      "group_by_price": {
        "range": {
          "field": "price",
          "ranges": [
            {
              "from": 0,
              "to": 20
            },
            {
              "from": 20,
              "to": 40
            },
            {
              "from": 40,
              "to": 50
            }
          ]
        },
        "aggs": {
          "group_by_tags": {
            "terms": {
              "field": "tags"
            },
          "aggs": {
            "average_price": {
              "avg": {
                  "field": "price"
               }
             }
           }
          }
       }
      }
     }
   }


为您推荐

友情链接 |九搜汽车网 |手机ok生活信息网|ok生活信息网|ok微生活
 Powered by www.360SDN.COM   京ICP备11022651号-4 © 2012-2016 版权