在弹性搜索查询中将子对象视为父对象的字段

PUT /my_index
{
  "mappings": {
    "properties": {
      "parent_id": {
        "type": "keyword"
      },
      "child_objects": {
        "type": "nested",
        "properties": {
          "child_id": {
            "type": "keyword"
          },
          "child_value": {
            "type": "text"
          }
        }
      }
    }
  }
}

GET /my_index/_search
{
  "query": {
    "nested": {
      "path": "child_objects",
      "query": {
        "match": {
          "child_objects.child_value": "some_value"
        }
      },
      "inner_hits": {}
    }
  }
}

GET /my_index/_search
{
  "size": 0,
  "aggs": {
    "parent_objects": {
      "terms": {
        "field": "parent_id"
      },
      "aggs": {
        "child_objects": {
          "nested": {
            "path": "child_objects"
          },
          "aggs": {
            "child_values": {
              "terms": {
                "field": "child_objects.child_value"
              }
            }
          }
        }
      }
    }
  }
}