# Unwind aggregation
**URL:** https://discuss.elastic.co/t/unwind-aggregation/21300
**Category:** Elasticsearch
**Created:** [December 17, 2014, 7:58pm UTC](https://discuss.elastic.co/t/unwind-aggregation/21300 "2014-12-17T19:58:27Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Facundo\_Viale](https://discuss.elastic.co/u/Facundo_Viale)
#### Post date: [December 17, 2014, 7:58pm UTC](https://discuss.elastic.co/t/unwind-aggregation/21300/1 "2014-12-17T19:58:27Z")
Hi,
I'm working on an application that use the aggregation API for making
reports. It would be great if there were something like mongo's unwind
operator
[http://docs.mongodb.org/manual/reference/operator/aggregation/unwind/](http://docs.mongodb.org/manual/reference/operator/aggregation/unwind/),
but I found nothing about this. Are there any plans to support this
operation? It is possible to implement?
Thanks!
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### Author:  [@jpountz](https://discuss.elastic.co/u/jpountz)
#### Post date: [December 18, 2014, 2:39pm UTC](https://discuss.elastic.co/t/unwind-aggregation/21300/2 "2014-12-18T14:39:39Z")
I don't believe we could have such an aggregation. However I think similar
results can be achieved by modeling the data differently, typically by
having nested documents for each size (to take the same example as the
mongo documentation) and then using the nested aggregation in order to
collect independently each size.
On Wed, Dec 17, 2014 at 8:58 PM, Facundo Viale [facundo.m.viale@gmail.com](mailto:facundo.m.viale@gmail.com)
wrote:
> Hi,
>
> I'm working on an application that use the aggregation API for making
> reports. It would be great if there were something like mongo's unwind
> operator
> [http://docs.mongodb.org/manual/reference/operator/aggregation/unwind/](http://docs.mongodb.org/manual/reference/operator/aggregation/unwind/),
> but I found nothing about this. Are there any plans to support this
> operation? It is possible to implement?
>
> Thanks!
>
> --
> You received this message because you are subscribed to the Google Groups
> "elasticsearch" group.
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> [https://groups.google.com/d/msgid/elasticsearch/b68ff5b1-e045-421a-83cf-d1efa77c72c3%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/b68ff5b1-e045-421a-83cf-d1efa77c72c3%40googlegroups.com)
> [https://groups.google.com/d/msgid/elasticsearch/b68ff5b1-e045-421a-83cf-d1efa77c72c3%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/b68ff5b1-e045-421a-83cf-d1efa77c72c3%40googlegroups.com?utm_medium=email&utm_source=footer)
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Adrien Grand
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 12:42am UTC](https://discuss.elastic.co/t/unwind-aggregation/21300/3 "2017-07-06T00:42:52Z")