# Big Table Preview changes and BT usage question

**URL:** <https://community.glideapps.com/t/big-table-preview-changes-and-bt-usage-question/74979>\
**Category:** Ask for Help\
**Tags:** big-tables\
**Created:** [July 17, 2024, 8:40pm UTC](https://community.glideapps.com/t/big-table-preview-changes-and-bt-usage-question/74979 "2024-07-17T20:40:19Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![MattLB](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/mattlb/32/41284_2.png) [@MattLB](https://community.glideapps.com/u/MattLB)\
**Post date:** [July 17, 2024, 8:40pm UTC](https://community.glideapps.com/t/big-table-preview-changes-and-bt-usage-question/74979/1 "2024-07-17T20:40:19Z")

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I have @Darren_Murphy excellent “Limitations of Big Tables”

Is it documented what computed column capabilities change in the Preview Mode. I will have a couple of tables with 10,000+ rows so I either need big tables or SQL data source.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/glideapps/original/3X/1/5/150d246d6feec5f4eb51570639a1899fdf73ef97.png)  
Also, I use a Glide table as a team feed - team updates (like adding a new record) are written to the team feed so all team members get real-time updates on all activities going on. If the “Team Feed” table were moved to a Big Table, would an update _NOT_ be visible to all team members in real-time.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/glideapps/original/3X/8/7/878e412d0d946b2707bbeae05098bff1bfd66aca.png)

Thanks for the info.

Matt

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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 17, 2024, 11:33pm UTC](https://community.glideapps.com/t/big-table-preview-changes-and-bt-usage-question/74979/2 "2024-07-17T23:33:59Z")

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> [@MattLB](#):
>
> Is it documented what computed column capabilities change in the Preview Mode.

Do we have this documented anywhere @NoCodeAndy ? Thank you.

> [@MattLB](#):
>
> If the “Team Feed” table were moved to a Big Table, would an update _NOT_ be visible to all team members in real-time.

I don’t know if it helps, can you try the “Reload Query” action after the record is added to see if it works?

> **[Reload Query | Glide Docs](https://www.glideapps.com/docs/reload-query)**
>
> Refresh data from SQL sources.

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**Author:** ![NoCodeAndy](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/nocodeandy/32/62530_2.png) [@NoCodeAndy](https://community.glideapps.com/u/NoCodeAndy)\
**Post date:** [July 18, 2024, 2:21pm UTC](https://community.glideapps.com/t/big-table-preview-changes-and-bt-usage-question/74979/3 "2024-07-18T14:21:31Z")

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> [@ThinhDinh](#):
>
> Do we have this documented anywhere @NoCodeAndy ?

Checking with the team. 👍