四十三、Elasticsearch聚合分析--bucket fi

1、需求

统计长虹品牌最近150天，140天，130天的平均价格

2、实现

GET /tvs/sales/_search 
{
  "size": 0,
  "query": {
    "term": {
      "brand": {
        "value": "长虹"
      }
    }
  },
  "aggs": {
    "recent_150d": {
      "filter": {
        "range": {
          "sold_date": {
            "gte": "now-150d"
          }
        }
      },
      "aggs": {
        "recent_150d_avg_price": {
          "avg": {
            "field": "price"
          }
        }
      }
    },
    "recent_140d": {
      "filter": {
        "range": {
          "sold_date": {
            "gte": "now-140d"
          }
        }
      },
      "aggs": {
        "recent_140d_avg_price": {
          "avg": {
            "field": "price"
          }
        }
      }
    },
    "recent_130d": {
      "filter": {
        "range": {
          "sold_date": {
            "gte": "now-130d"
          }
        }
      },
      "aggs": {
        "recent_130d_avg_price": {
          "avg": {
            "field": "price"
          }
        }
      }
    }
  }
}

结果

{
  "took": 4,
  "timed_out": false,
  "_shards": {
    "total": 5,
    "successful": 5,
    "failed": 0
  },
  "hits": {
    "total": 3,
    "max_score": 0,
    "hits": []
  },
  "aggregations": {
    "recent_130d": {
      "doc_count": 3,
      "recent_130d_avg_price": {
        "value": 1666.6666666666667
      }
    },
    "recent_140d": {
      "doc_count": 3,
      "recent_140d_avg_price": {
        "value": 1666.6666666666667
      }
    },
    "recent_150d": {
      "doc_count": 3,
      "recent_150d_avg_price": {
        "value": 1666.6666666666667
      }
    }
  }
}

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