# Row limits - The dark side of Glide :)

**URL:** <https://community.glideapps.com/t/row-limits-the-dark-side-of-glide/51484>\
**Category:** Ask for Help\
**Created:** [October 11, 2022, 5:29pm UTC](https://community.glideapps.com/t/row-limits-the-dark-side-of-glide/51484 "2022-10-11T17:29:11Z")\
**Posts on this page:** 6\
**Page:** 3

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**Author:** ![HeartwoodTreeCo](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/heartwoodtreeco/32/8150_2.png) [@HeartwoodTreeCo](https://community.glideapps.com/u/HeartwoodTreeCo)\
**Post date:** [April 25, 2024, 9:46pm UTC](https://community.glideapps.com/t/row-limits-the-dark-side-of-glide/51484/42 "2024-04-25T21:46:25Z")

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> [@Darren\_Murphy](#):
>
> If you use any Helper Tables to interact with the Big Table, make the Helper Tables Big Tables as well - even if they have only a single row. This is because some of the new computed column support only works from Big Table → Big Table, and not from Regular Table → Big Table

Thanks for this tidbit - I wouldn’t have thought to do that. Is there an up-to-date reference list anywhere columns that are supported, including those enabled through the “More Computed Columns with Big Tables” setting? Or do you just do trial and error and will there always be a warning like this if the computed column isn’t supported?

![image](https://us1.discourse-cdn.com/flex002/uploads/glideapps/original/3X/d/0/d06e039d983d94f3b6774fc022d2307df75cff2b.png)

Thanks also for your post on Migrating. I had started the process and your suggestions on the order of operations are very helpful.

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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:** [April 25, 2024, 11:32pm UTC](https://community.glideapps.com/t/row-limits-the-dark-side-of-glide/51484/43 "2024-04-25T23:32:37Z")

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> [@HeartwoodTreeCo](#):
>
> Thanks for this tidbit - I wouldn’t have thought to do that. Is there an up-to-date reference list anywhere columns that are supported, including those enabled through the “More Computed Columns with Big Tables” setting?

> **[Big Tables | Glide Docs](https://www.glideapps.com/docs/essentials/data-sources/big-tables#limitations-of-big-tables)**
>
> Scale your app with up to 10 million rows of data.

Here’s a documented list of limitations.

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**Author:** ![HeartwoodTreeCo](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/heartwoodtreeco/32/8150_2.png) [@HeartwoodTreeCo](https://community.glideapps.com/u/HeartwoodTreeCo)\
**Post date:** [April 26, 2024, 12:34am UTC](https://community.glideapps.com/t/row-limits-the-dark-side-of-glide/51484/44 "2024-04-26T00:34:44Z")

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I was assuming that was the list **without** the preview feature checked. I also keep hearing that new columns are being added all the time, so I was looking for some specifics on what is added by the preview feature being checked.

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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:** [April 26, 2024, 2:53am UTC](https://community.glideapps.com/t/row-limits-the-dark-side-of-glide/51484/45 "2024-04-26T02:53:14Z")

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Do we have any specific information about that @Darren_Murphy ? Worth adding those to the doc.

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**Author:** ![Darren\_Murphy](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/darren_murphy/32/47326_2.png) [@Darren\_Murphy](https://community.glideapps.com/u/Darren_Murphy)\
**Post date:** [April 26, 2024, 5:46am UTC](https://community.glideapps.com/t/row-limits-the-dark-side-of-glide/51484/46 "2024-04-26T05:46:17Z")

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> [@HeartwoodTreeCo](#):
>
> I was assuming that was the list **without** the preview feature checked. I also keep hearing that new columns are being added all the time, so I was looking for some specifics on what is added by the preview feature being checked.

mmm, thats a good point. At the moment I think it’s a bit of a mix. Let me follow up on this.

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<div class="post-metadata">

**Author:** ![HeartwoodTreeCo](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/heartwoodtreeco/32/8150_2.png) [@HeartwoodTreeCo](https://community.glideapps.com/u/HeartwoodTreeCo)\
**Post date:** [May 17, 2024, 1:31pm UTC](https://community.glideapps.com/t/row-limits-the-dark-side-of-glide/51484/47 "2024-05-17T13:31:17Z")

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Any word on this @Darren_Murphy ?

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