From 283f2d00607af44162497bb0924c8d971f5b876d Mon Sep 17 00:00:00 2001
From: Aivaras Gotovskis <aivaras.gotovskis@ongr.io>
Date: Fri, 10 Jul 2015 12:08:09 +0300
Subject: [PATCH] Add value count aggregation doc.
---
docs/Aggregation/ValueCount.md | 28 ++++++++++++++++++++++++++++
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create mode 100644 docs/Aggregation/ValueCount.md
diff --git a/docs/Aggregation/ValueCount.md b/docs/Aggregation/ValueCount.md
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+# Value Count Aggregation
+
+> More info about value count aggregation is in the [official elasticsearch docs][1]
+
+A single-value metrics aggregation that counts the number of values that are extracted from the aggregated documents.
+
+## Simple example
+
+```JSON
+{
+ "aggs" : {
+ "grades_count" : { "value_count" : { "field" : "grade" } }
+ }
+}
+```
+
+And now the query via DSL:
+
+```php
+$valueCountAggregation = new ValueCountAggregation('grades_count', 'grade');
+
+$search = new Search();
+$search->addAggregation($valueCountAggregation);
+
+$queryArray = $search->toArray();
+```
+
+[1]: https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-metrics-valuecount-aggregation.html
--
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