Re: How to migrate column type from uuid to serial

On 10/7/20 6:58 AM, Hemil Ruparel wrote:

Please reply to list also.
Ccing list

> Yes. The id is stored as uuid. Thanks for the suggestion. Should work
>
>
> On Wed, Oct 7, 2020 at 7:27 PM Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com
> <mailto:adrian(dot)klaver(at)aklaver(dot)com>> wrote:
>
> On 10/7/20 5:48 AM, Hemil Ruparel wrote:
> > I was integrating a payment gateway for my app when I noticed its
> > maximum length of customer id string is 32. SIze of UUID is 36 (32
> > characters and 4 dashes). So I want to change the type of
> customer id to
> > serial. The problem is by now, the column is being used at many
> places.
> > How to migrate the column to serial without dropping the data?
>
> Changing the size of the column is not an option?
>
> Your description of the customer id column above is somewhat confusing
> to me. Is the id actually stored as a UUID?
>
> Why is the max length an issue?
>
> If you where to migrate I would say create an independent
> serial/identity column. Then point the dependent objects at that. After
> all have been converted drop the old column.
>
>
>
>
>
> --
> Adrian Klaver
> adrian(dot)klaver(at)aklaver(dot)com <mailto:adrian(dot)klaver(at)aklaver(dot)com>
>

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com