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<h2 class="title"><a id="_updating_documents"></a>Updating Documents<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/6.0/docs/reference/getting-started.asciidoc">edit</a></h2>
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<p>In addition to being able to index and replace documents, we can also update documents. Note though that Elasticsearch does not actually do in-place updates under the hood. Whenever we do an update, Elasticsearch deletes the old document and then indexes a new document with the update applied to it in one shot.</p>
<p>This example shows how to update our previous document (ID of 1) by changing the name field to "Jane Doe":</p>
<div class="pre_wrapper lang-console">
<pre class="programlisting prettyprint lang-console">POST /customer/doc/1/_update?pretty
{
"doc": { "name": "Jane Doe" }
}</pre>
</div>
<div class="console_widget" data-snippet="snippets/13.console"></div>
<p>This example shows how to update our previous document (ID of 1) by changing the name field to "Jane Doe" and at the same time add an age field to it:</p>
<div class="pre_wrapper lang-console">
<pre class="programlisting prettyprint lang-console">POST /customer/doc/1/_update?pretty
{
"doc": { "name": "Jane Doe", "age": 20 }
}</pre>
</div>
<div class="console_widget" data-snippet="snippets/14.console"></div>
<p>Updates can also be performed by using simple scripts. This example uses a script to increment the age by 5:</p>
<div class="pre_wrapper lang-console">
<pre class="programlisting prettyprint lang-console">POST /customer/doc/1/_update?pretty
{
"script" : "ctx._source.age += 5"
}</pre>
</div>
<div class="console_widget" data-snippet="snippets/15.console"></div>
<p>In the above example, <code class="literal">ctx._source</code> refers to the current source document that is about to be updated.</p>
<p>Elasticsearch provides the ability to update multiple documents given a query condition (like an <code class="literal">SQL UPDATE-WHERE</code> statement). See <a href="/guide/en/elasticsearch/reference/6.0/docs-update-by-query.html" class="ulink" target="_top"><code class="literal">docs-update-by-query</code> API</a></p>
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