ElasticSearch：检查嵌套对象数组是否为空 [英] ElasticSearch: check if nested object array is empty

问题描述

如何获取字段中没有任何对象的所有文档？

How do I go about fetching all documents w/o any objects in a field?

我具有以下映射：

"properties" : {
  "name": {
    "type": "text"
  },
  "nestedArray": {
    "type": "nested",
    "properties": {
      "prop1": {
        "type": "text"
      },
      "prop2": {
        "type": "text"
      }
    }
  }
}

，我想获取 nestedArray为空或不存在的所有文档。

and I want to get all documents where "nestedArray" is empty or doesn't exist.

我正在使用elasticSearch 5.0

I'm using elasticSearch 5.0

推荐答案

我认为存在查询将解决此问题。尝试以下查询

I think exists query would solve this problem. Try following query

{
  "query": {
    "bool": {
      "must_not": [
        {
          "nested": {
            "path": "nestedArray",
            "query": {
              "bool": {
                "filter": {
                  "exists": {
                    "field": "nestedArray"
                  }
                }
              }
            }
          }
        }
      ]
    }
  }
}

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