# New Column Type (and action): Merging Arrays

**URL:** <https://community.glideapps.com/t/new-column-type-and-action-merging-arrays/79609>\
**Category:** Feature Requests\
**Created:** [January 28, 2025, 3:21pm UTC](https://community.glideapps.com/t/new-column-type-and-action-merging-arrays/79609 "2025-01-28T15:21:47Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![MaximeBaker](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/maximebaker/32/80877_2.png) [@MaximeBaker](https://community.glideapps.com/u/MaximeBaker)\
**Post date:** [January 28, 2025, 3:21pm UTC](https://community.glideapps.com/t/new-column-type-and-action-merging-arrays/79609/1 "2025-01-28T15:21:47Z")

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I need a new computed column type: Merge array.  
For example, I have a lookup containing two arrays like this:  
[{1}]  
[{2},{3}]

I want to merge them into:  
[{1},{2},{3}]

I know I can do that with JS easily. But I think it should be native!

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**Author:** ![MaximeBaker](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/maximebaker/32/80877_2.png) [@MaximeBaker](https://community.glideapps.com/u/MaximeBaker)\
**Post date:** [January 28, 2025, 3:22pm UTC](https://community.glideapps.com/t/new-column-type-and-action-merging-arrays/79609/2 "2025-01-28T15:22:54Z")

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And I know there is the append array. But, my use case doesn’t allow me to do that. I can’t predict how many array there will be in my lookup result.

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**Author:** ![Jeff\_Hager](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/jeff_hager/32/43_2.png) [@Jeff\_Hager](https://community.glideapps.com/u/Jeff_Hager)\
**Post date:** [January 28, 2025, 5:05pm UTC](https://community.glideapps.com/t/new-column-type-and-action-merging-arrays/79609/3 "2025-01-28T17:05:23Z")

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So your lookup is returning an array of JSON arrays?

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<div class="post-metadata">

**Author:** ![MaximeBaker](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/maximebaker/32/80877_2.png) [@MaximeBaker](https://community.glideapps.com/u/MaximeBaker)\
**Post date:** [January 28, 2025, 5:05pm UTC](https://community.glideapps.com/t/new-column-type-and-action-merging-arrays/79609/4 "2025-01-28T17:05:42Z")

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Exactly.