# Single Value column - Row Owner

**URL:** https://community.glideapps.com/t/single-value-column-row-owner/63490
**Category:** Ask for Help
**Created:** [July 4, 2023, 2:12pm UTC](https://community.glideapps.com/t/single-value-column-row-owner/63490 "2023-07-04T14:12:27Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![ThinhDinh](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/thinhdinh/32/49_2.png) [@ThinhDinh](https://community.glideapps.com/u/ThinhDinh)
#### Post date: [July 4, 2023, 2:14pm UTC](https://community.glideapps.com/t/single-value-column-row-owner/63490/2 "2023-07-04T14:14:19Z")

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You can not use any computed columns as a row owner.

> [@thinking Row Owners vs. User Specific Columns](https://community.glideapps.com/t/row-owners-vs-user-specific-columns/58205/3):
>
> Correct. This is because computed columns (eg. lookup columns) are evaluated on the client device after all data has been downloaded. And by that time it’s too late to apply row owners. Yes, if a user changes their email address then they would lose access to all owned rows. You’d need to update all rows with their new email address. But, how often do your users change their email address? (I haven’t changed mine in 30+ years man_shrugging)

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