# How to update denormalized documents

**URL:** <https://discuss.elastic.co/t/how-to-update-denormalized-documents/250619>\
**Category:** Elastic Search\
**Tags:** elastic-app-search\
**Created:** [October 1, 2020, 8:23am UTC](https://discuss.elastic.co/t/how-to-update-denormalized-documents/250619 "2020-10-01T08:23:23Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Naoki\_Kaneko](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/naoki_kaneko/32/66155_2.png) [@Naoki\_Kaneko](https://discuss.elastic.co/u/Naoki_Kaneko)\
**Post date:** [October 1, 2020, 8:23am UTC](https://discuss.elastic.co/t/how-to-update-denormalized-documents/250619/1 "2020-10-01T08:23:23Z")

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I found same articles saying we need to index denormalized documents if we want to use joined tables in App search.

However, I have not found any article referring to how to update the denormalized documents as far as I've googled.  
If you guys know some best practice, could you share it?

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**Author:** ![JasonStoltz](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jasonstoltz/32/49893_2.png) [@JasonStoltz](https://discuss.elastic.co/u/JasonStoltz)\
**Post date:** [October 20, 2020, 3:43pm UTC](https://discuss.elastic.co/t/how-to-update-denormalized-documents/250619/2 "2020-10-20T15:43:35Z")

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To my knowledge, we do not have a guide like that.

Could you give us an idea of what your denormalized documents look like and what specific issues you're having when updating?

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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:** [November 17, 2020, 3:43pm UTC](https://discuss.elastic.co/t/how-to-update-denormalized-documents/250619/3 "2020-11-17T15:43:44Z")

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