| From: | Chapman Flack <chap(at)anastigmatix(dot)net> |
|---|---|
| To: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> |
| Cc: | PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: PostgreSQL vs SQL/XML Standards |
| Date: | 2019-01-21 02:41:44 |
| Message-ID: | 5C453168.9020203@anastigmatix.net |
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| Thread: | |
| Lists: | pgsql-hackers |
On 01/20/19 20:07, Chapman Flack wrote:
> So it appears that this example does not depend on any special treatment
> of the default_expression.
>
> Is there an example that can be constructed that would depend on the
> special treatment (in which case, the PL/Java implementation would be
> unable to produce the same result)?
I see that I briefly forgot one difference that does matter, namely the
timing of a call to a volatile function like nextval. That detail certainly
needs to remain in the docs.
I am left wondering if that might be the only effect of the deferred
argument evaluation that really does matter.
Regards,
-Chap
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