# How to perform join between two indexes in ES? **URL:** \ **Category:** Elasticsearch\ **Created:** [August 1, 2022, 6:26am UTC](https://discuss.elastic.co/t/how-to-perform-join-between-two-indexes-in-es/311078 "2022-08-01T06:26:55Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Ritikapawar](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ritikapawar/32/98580_2.png) [@Ritikapawar](https://discuss.elastic.co/u/Ritikapawar)\ **Post date:** [August 1, 2022, 6:26am UTC](https://discuss.elastic.co/t/how-to-perform-join-between-two-indexes-in-es/311078/1 "2022-08-01T06:26:55Z")
I have two indexes as Student1.csv and lecture.csv sample student1.csv ```auto student_id name Roll no 1 Amey 1 2 Neha 2 3 Shubham 3 4 Satish 4 5 Ritika 5 ``` sample lecture.csv ```auto lec_no lec student_id 1 eng 1 1 eng 1 1 eng 3 1 eng 4 1 eng 5 2 maths 1 2 maths 2 2 maths 3 2 maths 4 2 maths 5 3 sci 1 3 sci 2 3 sci 3 3 sci 4 3 sci 5 4 history 1 4 history 2 4 history 1 4 history 1 4 histoy 3 5 PT 3 5 PT 3 5 PT 3 5 PT 4 5 PT 5 ``` both indexes have a common field student\_id I want to visualize a bar graph on which I want names of top 3 student on X-axis from (student1.csv index) and the count of student\_id on Y-axis from( lecture.csv) I want output in the following way ![WhatsApp Image 2022-08-01 at 11.42.36 AM](https://us1.discourse-cdn.com/elastic/original/3X/e/0/e054e759085e5506f6215d6ac2f617f64f6f842b.jpeg) ---
**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:** [August 1, 2022, 6:47am UTC](https://discuss.elastic.co/t/how-to-perform-join-between-two-indexes-in-es/311078/2 "2022-08-01T06:47:52Z")
Elasticsearch does not support joins like that so your best bet is probably to denormalise and store student information on the lecture documents. ---
**Author:** ![Ritikapawar](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ritikapawar/32/98580_2.png) [@Ritikapawar](https://discuss.elastic.co/u/Ritikapawar)\ **Post date:** [August 5, 2022, 9:58am UTC](https://discuss.elastic.co/t/how-to-perform-join-between-two-indexes-in-es/311078/3 "2022-08-05T09:58:01Z")
So this "JOIN" feature available in elastic (subscription) Plati­num, Enter­prise mode? ---
**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:** [August 5, 2022, 10:16am UTC](https://discuss.elastic.co/t/how-to-perform-join-between-two-indexes-in-es/311078/4 "2022-08-05T10:16:09Z")
No, Elasticsearch does not support joins at all. ---
**Author:** ![Ritikapawar](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ritikapawar/32/98580_2.png) [@Ritikapawar](https://discuss.elastic.co/u/Ritikapawar)\ **Post date:** [August 5, 2022, 10:20am UTC](https://discuss.elastic.co/t/how-to-perform-join-between-two-indexes-in-es/311078/5 "2022-08-05T10:20:26Z")
Thanks ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [September 2, 2022, 10:21am UTC](https://discuss.elastic.co/t/how-to-perform-join-between-two-indexes-in-es/311078/6 "2022-09-02T10:21:24Z")
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