Select only one element inside an object

Elastic Stack Elasticsearch
1

Let's say I have an object with N fields, and I only want to return one of them. How can I do that? Can I exclude the whole object and then include one of their childs?

Thanks.

2

Hi!!
You says something like that:
Doc

  "name" : "xpto",
          "address" : {
            "number" : 15,
            "street" : "street b"
          }

Query

GET idx_teste_nested/_search
{
  "_source": ["address.number"], 
  "query": {
    "match_all": {}
  }
}

Response (only address.number)

 {
        "_index" : "idx_teste_nested",
        "_type" : "_doc",
        "_id" : "WhTFioABHFVsAeBmboN8",
        "_score" : 1.0,
        "_source" : {
          "address" : {
            "number" : 15
          }
        }
      }
3

Well, I would like to return all other results as well, like name or other fields (I start with a wildcard)

4

give a example for explain better

5

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