# Join in Elasticsearch like in RDBMS

**URL:** <https://discuss.elastic.co/t/join-in-elasticsearch-like-in-rdbms/107738>\
**Category:** Elasticsearch\
**Created:** [November 15, 2017, 11:58am UTC](https://discuss.elastic.co/t/join-in-elasticsearch-like-in-rdbms/107738 "2017-11-15T11:58:07Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![g.barov](https://avatars.discourse-cdn.com/v4/letter/g/bb73d2/32.png) [@g.barov](https://discuss.elastic.co/u/g.barov)\
**Post date:** [November 15, 2017, 11:58am UTC](https://discuss.elastic.co/t/join-in-elasticsearch-like-in-rdbms/107738/1 "2017-11-15T11:58:07Z")

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Hi all,  
I am trying to make a join like in RDBMS.  
I have a few .csv files that are included in the .config file and I want to use them for BI purposes.  
Is it possible to join by unique column a few tables like in sql and to create a data model and if not what are the solutions?

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**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [November 15, 2017, 11:59am UTC](https://discuss.elastic.co/t/join-in-elasticsearch-like-in-rdbms/107738/2 "2017-11-15T11:59:59Z")

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Elasticsearch is not a relational system, and does not support joins, so you will most likely need to change how you [model your data](https://www.elastic.co/guide/en/elasticsearch/guide/2.x/modeling-your-data.html).

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<div class="post-metadata">

**Author:** ![g.barov](https://avatars.discourse-cdn.com/v4/letter/g/bb73d2/32.png) [@g.barov](https://discuss.elastic.co/u/g.barov)\
**Post date:** [November 15, 2017, 1:01pm UTC](https://discuss.elastic.co/t/join-in-elasticsearch-like-in-rdbms/107738/3 "2017-11-15T13:01:19Z")

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Thank you for the fast reply!  
As I understand the best solution is to creata a signle .csv file with all available fields?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [December 13, 2017, 1:01pm UTC](https://discuss.elastic.co/t/join-in-elasticsearch-like-in-rdbms/107738/4 "2017-12-13T13:01:25Z")

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