title: ElasticSearch URI Search null field
body: <p>I need to create a query via URI to filter all data between two dates and also if this date field is null.</p>
  
  <p>For example:
  I have the field "creation_date" in some objects, however I want that in the resulting also does not appear the objects that the field does not have.</p>
  
  <p>I tried something similar below:</p>
  
  <pre><code>http://localhost//elasticsearch/channels/channel/_search?q=channel.schedule.creation_date:[2018-06-19 TO 2018-12-22] OR channel.schedule.creation_date: NULL
  </code></pre>
  
  <p>As far as comparing the dates is OK, it works. The problem is to get the NULL values.</p>
  
  <p><strong>Edited</strong>
  Source sample:</p>
  
  <pre><code> "_source": {
                  "channel": {
                      "activated": false,
                      "approved": false,
                      "content": "Jvjv",
                      "creation_date": "2018-06-21T13:06:10.000Z",
                      "facebookLink": "J jv",
                      "id": "Kvjvjv",
                      "instagramId": "Jvjv",
                      "name": "Kbkbkvk",
                      "ownerId": "sZtxdhiNbNY9sr2DtiCzlgJfsqb2",
                      "plan": 0,
                      "purpose": "Jvjv",
                      "recurrence": 1,
                      "segment": "Jvjvjv",
                      "twitterId": "Jvjv",
                      "youtubeId": "Jvj"
                  }
              }
          }
  </code></pre>