# Find Correlation between fields in different indices **URL:** \ **Category:** Elasticsearch\ **Created:** [August 5, 2021, 6:30am UTC](https://discuss.elastic.co/t/find-correlation-between-fields-in-different-indices/280498 "2021-08-05T06:30:33Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![WJ\_Y](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wj_y/32/91113_2.png) [@WJ\_Y](https://discuss.elastic.co/u/WJ_Y)\ **Post date:** [August 5, 2021, 6:30am UTC](https://discuss.elastic.co/t/find-correlation-between-fields-in-different-indices/280498/1 "2021-08-05T06:30:33Z")
Using Elasticsearch version 7.14.0, I want to find correlations betweet fields in different indices. An index named "A" has "name", "a-1", "a-2" fields. An index named "B" has "name", "b-1", "b-2" fields. The "name" field is the common field for index "A" and "B". What I want to do is to find the correlation between "a-1" and "b-1" (or "a-2" and "b-2"). Is there any way to find the correlation? ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [August 9, 2021, 5:24am UTC](https://discuss.elastic.co/t/find-correlation-between-fields-in-different-indices/280498/2 "2021-08-09T05:24:45Z")
Welcome to our community! 😃 If the fields are the same in each index, then you can run queries across them both using the same search values. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [September 6, 2021, 5:24am UTC](https://discuss.elastic.co/t/find-correlation-between-fields-in-different-indices/280498/3 "2021-09-06T05:24:59Z")
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