title: Filtering fields to display, what about nested ones?
body: <p>In Elasticsearch 6.X, I use the following command to display specific fields from a query</p>
  
  <pre><code>curl 127.0.0.1:9200/_search?stored_fields=_id
  </code></pre>
  
  <p>What about nested fields? For documents like this,</p>
  
  <pre><code>{
      "data": {
           "field1": "hello"
      }
  }
  </code></pre>
  
  <p>If I want to display only data.field1, what command should I use? The following one doesn't work:</p>
  
  <pre><code>curl 127.0.0.1:9200/_search?stored_fields=data.field1
  </code></pre>
  
  <p>Any ideas?</p>