# How to merge indices?
**URL:** https://discuss.elastic.co/t/how-to-merge-indices/8728
**Category:** Elasticsearch
**Created:** [August 13, 2012, 9:05am UTC](https://discuss.elastic.co/t/how-to-merge-indices/8728 "2012-08-13T09:05:15Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Stefan\_Pi\_2](https://discuss.elastic.co/u/Stefan_Pi_2)
#### Post date: [August 13, 2012, 9:05am UTC](https://discuss.elastic.co/t/how-to-merge-indices/8728/1 "2012-08-13T09:05:15Z")
Hi everybody,
I'm using ES 0.19.0 and I would like to know if there's an option to merge
two or more indices. And if there's no option, what is the
common/easiest/fastest way to to this? I guess I need to move all documents
from the first index to the second, which basically means re-indexing all
documents of the first index into the second? Or are there any more
resource-friendly options?
Any help would be much appreciated!
Thanks,
Stefan
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### Author:  [@kimchy](https://discuss.elastic.co/u/kimchy)
#### Post date: [August 13, 2012, 10:24am UTC](https://discuss.elastic.co/t/how-to-merge-indices/8728/2 "2012-08-13T10:24:12Z")
There isn't a built in mechanism to do that, and yes, reindexing from one index to the other is the faster way…
On Aug 13, 2012, at 11:05 AM, Stefan Pi [stefan.pietschmann@social-meme.com](mailto:stefan.pietschmann@social-meme.com) wrote:
> Hi everybody,
>
> I'm using ES 0.19.0 and I would like to know if there's an option to merge two or more indices. And if there's no option, what is the common/easiest/fastest way to to this? I guess I need to move all documents from the first index to the second, which basically means re-indexing all documents of the first index into the second? Or are there any more resource-friendly options?
>
> Any help would be much appreciated!
>
> Thanks,
> Stefan
>
> --
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### Author:  [@Stefan\_Pi\_3](https://discuss.elastic.co/u/Stefan_Pi_3)
#### Post date: [August 20, 2012, 9:07am UTC](https://discuss.elastic.co/t/how-to-merge-indices/8728/3 "2012-08-20T09:07:40Z")
Thank you, kimchy!
Am Montag, 13. August 2012 12:24:12 UTC+2 schrieb kimchy:
> There isn't a built in mechanism to do that, and yes, reindexing from one
> index to the other is the faster way…
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 3:15am UTC](https://discuss.elastic.co/t/how-to-merge-indices/8728/4 "2017-07-06T03:15:50Z")