From b949baa95a5b9b8d65ddd89988efc133a68ed28b Mon Sep 17 00:00:00 2001
From: Aivaras Gotovskis <aivaras.gotovskis@ongr.io>
Date: Fri, 10 Jul 2015 12:05:50 +0300
Subject: [PATCH] Add missing aggregation doc.
---
docs/Aggregation/Missing.md | 31 +++++++++++++++++++++++++++++++
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diff --git a/docs/Aggregation/Missing.md b/docs/Aggregation/Missing.md
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+# Missing Aggregation
+
+> More info about missing aggregation is in the [official elasticsearch docs][1]
+
+A field data based single bucket aggregation, that creates a bucket of all documents
+in the current document set context that are missing a field value.
+
+## Simple example
+
+```JSON
+{
+ "aggregations" : {
+ "agg_products_without_a_price" : {
+ "missing" : { "field" : "price" }
+ }
+ }
+ }
+```
+
+And now the query via DSL:
+
+```php
+$missingAggregation = new MissingAggregation('products_without_a_price', 'price');
+
+$search = new Search();
+$search->addAggregation($missingAggregation);
+
+$queryArray = $search->toArray();
+```
+
+[1]: https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-bucket-missing-aggregation.html
--
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