From bd1b80a12558b26e4f173f3ec310b89e13c2d6a9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mantas=20Marcinkevi=C4=8Dius?= <marc.mantas@gmail.com>
Date: Mon, 29 Aug 2016 10:39:28 +0300
Subject: [PATCH] added documentation
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docs/Aggregation/Pipeline/MinBucket.md | 51 ++++++++++++++++++++++++++
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+# Min Bucket Aggregation
+
+> More info about Min bucket aggregation is in the [official elasticsearch docs][1]
+
+A sibling pipeline aggregation which identifies the bucket(s) with the minimum value of a
+specified metric in a sibling aggregation and outputs both the value and the key(s) of the bucket(s).
+The specified metric must be numeric and the sibling aggregation must be a multi-bucket aggregation.
+
+## Simple example
+
+```JSON
+{
+ "aggs" : {
+ "sales_per_month" : {
+ "date_histogram" : {
+ "field" : "date",
+ "interval" : "month"
+ },
+ "aggs": {
+ "sales": {
+ "sum": {
+ "field": "price"
+ }
+ }
+ }
+ },
+ "min_monthly_sales": {
+ "min_bucket": {
+ "buckets_path": "sales_per_month>sales"
+ }
+ }
+ }
+}
+```
+
+And now the query via DSL:
+
+```php
+$dateAggregation = new DateHistogramAggregation('sales_per_month', 'date', 'month');
+$sumAggregation = new SumAggregation('sales', 'price');
+$minBucketAggregation = new MinBucketAggregation('min_monthly_sales', 'sales_per_month>sales');
+$dateAggregation->addAggregation($sumAggregation);
+
+$search = new Search();
+$search->addAggregation($dateAggregation);
+$search->addAggregation($minBucketAggregation);
+
+$queryArray = $search->toArray();
+```
+
+[1]: https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-pipeline-min-bucket-aggregation.html
--
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