# Approximate match between two fields

**URL:** <https://discuss.elastic.co/t/approximate-match-between-two-fields/145709>\
**Category:** Logstash\
**Created:** [August 23, 2018, 11:10am UTC](https://discuss.elastic.co/t/approximate-match-between-two-fields/145709 "2018-08-23T11:10:32Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![scch](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/scch/32/25504_2.png) [@scch](https://discuss.elastic.co/u/scch)\
**Post date:** [August 23, 2018, 11:10am UTC](https://discuss.elastic.co/t/approximate-match-between-two-fields/145709/1 "2018-08-23T11:10:32Z")

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is there a way of approximate match in Logstash, between two fields in a document.

what i want to achieve is.. if, sender and recipient name is matching even approximately(30%..)  
add field "sender\_id" = personal

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**Author:** ![ravian100](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ravian100/32/33941_2.png) [@ravian100](https://discuss.elastic.co/u/ravian100)\
**Post date:** [August 23, 2018, 11:58am UTC](https://discuss.elastic.co/t/approximate-match-between-two-fields/145709/2 "2018-08-23T11:58:15Z")

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Try fuzzy search also know as (levenshtein distance). It will definitely work

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**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [August 23, 2018, 2:16pm UTC](https://discuss.elastic.co/t/approximate-match-between-two-fields/145709/3 "2018-08-23T14:16:57Z")

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There's nothing built in for this. You'll probably want to write a custom filter that e.g. computes the Levenshtein distance between two fields values.

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<div class="post-metadata">

**Author:** ![scch](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/scch/32/25504_2.png) [@scch](https://discuss.elastic.co/u/scch)\
**Post date:** [August 26, 2018, 9:33am UTC](https://discuss.elastic.co/t/approximate-match-between-two-fields/145709/4 "2018-08-26T09:33:47Z")

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Thanks Ravian & Magnus.... will work on to create a filter...to compute Levenshtein distance

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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:** [September 23, 2018, 9:33am UTC](https://discuss.elastic.co/t/approximate-match-between-two-fields/145709/5 "2018-09-23T09:33:52Z")

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