From 1625682e9be430206efbe58d89e684b5feed3f1e Mon Sep 17 00:00:00 2001
From: Aivaras Gotovskis <aivaras.gotovskis@ongr.io>
Date: Wed, 8 Jul 2015 16:39:58 +0300
Subject: [PATCH] Add extended stats aggregation doc.
---
docs/Aggregation/ExtendedStats.md | 30 ++++++++++++++++++++++++++++++
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create mode 100644 docs/Aggregation/ExtendedStats.md
diff --git a/docs/Aggregation/ExtendedStats.md b/docs/Aggregation/ExtendedStats.md
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+# Extended Stats Aggregation
+
+> More info about extended stats aggregation is in the [official elasticsearch docs][1]
+
+A multi-value metrics aggregation that computes stats over numeric values extracted from the aggregated documents.
+
+## Simple example
+
+```JSON
+{
+ "aggregations" : {
+ "agg_grades_stats" : {
+ "extended_stats" : { "field" : "grade" }
+ }
+ }
+}
+```
+
+And now the query via DSL:
+
+```php
+$extendedStatsAggregation = new ExtendedStatsAggregation('grades_stats', 'grade');
+
+$search = new Search();
+$search->addAggregation($extendedStatsAggregation);
+
+$queryArray = $search->toArray();
+```
+
+[1]: https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-metrics-extendedstats-aggregation.html
--
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