How to change a field type in existing table ?

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Posted on by Voltes

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Hi guys,

I'm asking this in relation with development then later for the deployment (maybe to UAT or Production), since I'm experiencing difficulties to change my field from a String to Enum type. Which apparently I need to delete first the field which mean I also need to change (remove) all the reference as and when it is used in code classes or in forms then Build & Synchronized successfully.

Do I need to Check-in first this deletion ? then also wait for the next deployment succeeded, before then I can add new field with the "wanted" field type which is in my case is Enum ?

Or I can, after the Build & Synchronize after the deletion, then Check in, then I can just add the new field, Build & synchronized again, and Check-in again ?

So when doing deployment, it will know there is two steps : deletion and add new field but with the same name ?

Thanks,

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Martin Dráb 239,116 Most Valuable Professional on at

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In general, I recommend creating a new field rather then changing the type of the same field. It's much safer.

Also, if you want to directly migrate data from the existing (string) field, you'll need both fields existing at the some time, therefore deleting the old field before creating the new one isn't an option.

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Bharani Preetham Pe... 3,634 Moderator on at

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I would suggest you to first delete the string field and all related code and do a build sync. On successful build you can checkin that to UAT. Then add the new enum field and again do build sync and check-in.

But never try to rename and change the base enum as it is not possible because it is a string field and system won't allow you to do so.

So on delete the field and checking in will lead to drop the field from uat also and again adding should solve the problem.

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Voltes 596 on at

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Noted.

Thank you both.

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