| From: | Nathan Bossart <nathandbossart(at)gmail(dot)com> |
|---|---|
| To: | Álvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> |
| Cc: | jian he <jian(dot)universality(at)gmail(dot)com>, Masahiro Ikeda <ikedamsh(at)oss(dot)nttdata(dot)com>, Robert Treat <rob(at)xzilla(dot)net>, pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: Doc: fix the rewrite condition when executing ALTER TABLE ADD COLUMN |
| Date: | 2025-04-23 16:28:57 |
| Message-ID: | aAkVSY7pGg4SxSNp@nathan |
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| Lists: | pgsql-hackers |
This one was briefly discussed in an RMT meeting.
On Mon, Mar 24, 2025 at 11:37:20AM +0100, Álvaro Herrera wrote:
> On 2025-Mar-24, jian he wrote:
>
>> In the current development branch,
>> virtual generated columns still do not support the domain.
>> you can not change the generation expression if it contains a check
>> constraint on it.
>> so virtual generated columns don't need rewriting.
>>
>> IMHO, the committed doc description didn't mention this exception.
>> we need some text to cover this exception?
>
> I'd add a note about these two things to the open items page, and wait
> to see if we get some of these limitations fixed, so that if we don't,
> we remember to note this limitation in the documentation.
Are we still waiting on something for this, or should we proceed with the
documentation changes? It doesn't seem tremendously urgent, but I noticed
it's been about a month since the last message on this thread.
--
nathan
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