# Performance question

**URL:** <https://community.glideapps.com/t/performance-question/5760>\
**Category:** Ask for Help\
**Created:** [March 24, 2020, 9:56am UTC](https://community.glideapps.com/t/performance-question/5760 "2020-03-24T09:56:50Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![messly](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/messly/32/4431_2.png) [@messly](https://community.glideapps.com/u/messly)\
**Post date:** [March 24, 2020, 9:56am UTC](https://community.glideapps.com/t/performance-question/5760/1 "2020-03-24T09:56:50Z")

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Hi,

I’ve got a static sheet of around 8000 rows and want to join 2 columns together to display on the app. From a performance perspective - is it better to use the ‘Templates’ feature in Glide to generate a column of concatenated data or create a column straight into the sheets (using =CONCAT) and display that?

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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:** [March 24, 2020, 12:38pm UTC](https://community.glideapps.com/t/performance-question/5760/2 "2020-03-24T12:38:12Z")

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My unproven opinion would be to use a Template column. They are fast, server side, and it’s 8000 less cells for glide to have to transfer.