Elasticsearch 缺少 aggs答案

【问题标题】：Elasticsearch missing aggsElasticsearch 缺少 aggs
【发布时间】：2016-01-16 02:17:42
【问题描述】：

我正在执行 Elasticsearch 查询，但遇到 aggs 丢失的问题。

如果我执行下面的查询，我会毫无问题地返回 aggs：

{
  "query": {
    "filtered": {
      "query": {
        "query_string": {
          "query": "*wet*",
          "fields": [
            "Name",
            "Summary",
            "Description",
            "Location",
            "Features",
            "TypeName",
            "CategoryName"
          ]
        },
        "filter": {
          "term": {
            "TypeID": "13"
          }
        }
      }
    }
  },
  "aggs": {
    "type": {
      "terms": {
        "field": "TypeID"
      }
    },
    "category": {
      "terms": {
        "field": "CategoryID"
      }
    },
    "max_price": {
      "max": {
        "field": "Price"
      }
    },
    "min_price": {
      "min": {
        "field": "Price"
      }
    },
    "filter-type": {
      "term": {
        "TypeID": "13"
      }
    }
  },
  "from": 0,
  "size": 50,
  "sort": {
    "_score": {
      "order": "desc"
    }
  },
  "explain": false
}

但是，一旦我添加了过滤器，就不再返回 aggs。我看不出我做错了什么，所以任何帮助都将不胜感激。

不返回 aggs 的看起来是这样的：

{
  "query": {
    "filtered": {
      "query": {
        "query_string": {
          "query": "*wet*",
          "fields": [
            "Name",
            "Summary",
            "Description",
            "Location",
            "Features",
            "TypeName",
            "CategoryName"
          ]
        },
        "filter": {
          "term": {
            "TypeID": "13"
          }
        }
      }
    }
  },
  "aggs": {
    "type": {
      "terms": {
        "field": "TypeID"
      }
    },
    "category": {
      "terms": {
        "field": "CategoryID"
      }
    },
    "max_price": {
      "max": {
        "field": "Price"
      }
    },
    "min_price": {
      "min": {
        "field": "Price"
      }
    },
    "filter-type": {
      "term": {
        "TypeID": "13"
      }
    }
  },
  "from": 0,
  "size": 50,
  "sort": {
    "_score": {
      "order": "desc"
    }
  },
  "explain": false
}

【问题讨论】：

标签： elasticsearch

【解决方案1】：

这是filters aggregation 的正确语法。您必须像这样将所有聚合包装在过滤器中

{
  "size": 0,
  "query": {
    "filtered": {
      "query": {
        "query_string": {
          "query": "*wet*",
          "fields": [
            "Name",
            "Summary",
            "Description",
            "Location",
            "Features",
            "TypeName",
            "CategoryName"
          ]
        }
      },
      "filter": {
        "term": {
          "TypeID": "13"
        }
      }
    }
  },
  "aggs": {
    "filter-type": {
      "filter": {
        "term": {
          "TypeID": "13"
        }
      },
      "aggs": {
        "type": {
          "terms": {
            "field": "TypeID"
          }
        },
        "category": {
          "terms": {
            "field": "CategoryID"
          }
        },
        "max_price": {
          "max": {
            "field": "Price"
          }
        },
        "min_price": {
          "min": {
            "field": "Price"
          }
        }
      }
    }
  }
}

同样在这种情况下，aggs 中的 filter 是多余的，因为您已经在查询中使用了相同的过滤器。

【讨论】：