# Find similarity between two fields of an index

**URL:** https://discuss.elastic.co/t/find-similarity-between-two-fields-of-an-index/215060
**Category:** Elasticsearch
**Created:** [January 15, 2020, 12:09am UTC](https://discuss.elastic.co/t/find-similarity-between-two-fields-of-an-index/215060 "2020-01-15T00:09:41Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![prathako](https://avatars.discourse-cdn.com/v4/letter/p/f6c823/32.png) [@prathako](https://discuss.elastic.co/u/prathako)
#### Post date: [January 15, 2020, 12:09am UTC](https://discuss.elastic.co/t/find-similarity-between-two-fields-of-an-index/215060/1 "2020-01-15T00:09:41Z")

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My index:  
{"var1": "abc", "var2": "ert","var3": "ca","var4": "sdf"}  
{"var1": "ert", "var2": "abc","var3": "La","var4": "abc"}  
{"var1": "vbn", "var2": "fgh","var3": "ert","var4": "vbh"}  
{"var1": "fgh", "var2": "tyu","var3": "sdg","var4": "sdf"}

I want to write a query to find the similarity between fields of my index.

in this case, the intersection should be var1 & var2 -\> 3 , var1&var3 -\>1, var1&var4 -\> 2, var2&var3-\>1, var2&var4-\>1, var3&var4-\>0

anything close to this is possible?

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<div class="post-metadata">

### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [February 12, 2020, 12:09am UTC](https://discuss.elastic.co/t/find-similarity-between-two-fields-of-an-index/215060/2 "2020-02-12T00:09:44Z")

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