# If the condition is two fields equal how to write?

**URL:** <https://discuss.elastic.co/t/if-the-condition-is-two-fields-equal-how-to-write/289531>\
**Category:** Kibana\
**Created:** [November 18, 2021, 6:08am UTC](https://discuss.elastic.co/t/if-the-condition-is-two-fields-equal-how-to-write/289531 "2021-11-18T06:08:13Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![KhalidDu](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/khaliddu/32/97114_2.png) [@KhalidDu](https://discuss.elastic.co/u/KhalidDu)\
**Post date:** [November 18, 2021, 6:08am UTC](https://discuss.elastic.co/t/if-the-condition-is-two-fields-equal-how-to-write/289531/1 "2021-11-18T06:08:13Z")

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Excuse me, I am a novice, so I would like to ask about the query ES, if the condition is two fields equal how to write?

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**Author:** ![flash1293](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/flash1293/32/41227_2.png) [@flash1293](https://discuss.elastic.co/u/flash1293)\
**Post date:** [November 18, 2021, 8:25am UTC](https://discuss.elastic.co/t/if-the-condition-is-two-fields-equal-how-to-write/289531/2 "2021-11-18T08:25:57Z")

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You can't do this directly in the query - the easiest way is to create a runtime field ([Manage index pattern data fields | Kibana Guide [7.15] | Elastic](https://www.elastic.co/guide/en/kibana/7.15/managing-index-patterns.html#create-runtime-fields)) which does the comparison and emits true if they are identical and false otherwise, then filter on this new field.

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**Author:** ![KhalidDu](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/khaliddu/32/97114_2.png) [@KhalidDu](https://discuss.elastic.co/u/KhalidDu)\
**Post date:** [November 19, 2021, 3:10am UTC](https://discuss.elastic.co/t/if-the-condition-is-two-fields-equal-how-to-write/289531/3 "2021-11-19T03:10:48Z")

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I see. Thank you for your help

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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 17, 2021, 3:11am UTC](https://discuss.elastic.co/t/if-the-condition-is-two-fields-equal-how-to-write/289531/4 "2021-12-17T03:11:08Z")

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