| From: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> |
|---|---|
| To: | Bryn Llewellyn <bryn(at)yugabyte(dot)com> |
| Cc: | Peter Geoghegan <pg(at)bowt(dot)ie>, pgsql-general list <pgsql-general(at)lists(dot)postgresql(dot)org>, "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>, Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>, Merlin Moncure <mmoncure(at)gmail(dot)com>, Mladen Gogala <gogala(dot)mladen(at)gmail(dot)com>, Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at> |
| Subject: | Re: Packages, inner subprograms, and parameterizable anonymous blocks for PL/pgSQL |
| Date: | 2021-12-20 19:37:44 |
| Message-ID: | CAFj8pRC=95QGCFN=nZ6GRb0fOZy7sae9MPwBAkn-vqoVSCBJjw@mail.gmail.com |
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| Lists: | pgsql-general |
Hi
> I’m still hoping that I might get some pointers to whitepapers or blog
> posts that expand on those bullets that I quoted from the PG doc: «Instead
> of packages, use schemas to organize your functions into groups.» and
> «Since there are no packages, there are no package-level variables either.
> This is somewhat annoying. You can keep per-session state in temporary
> tables instead.»
>
I fixed a patch https://commitfest.postgresql.org/36/1608/ so you can check
it.
Using temporary tables instead of session variables is not too practical.
There are more alternative ways - a) one extension, b) using global
variables from Perl, c) using global configuration variables.
The @c is most common today
http://okbob.blogspot.com/2021/06/calculating-derivation-from.html
Regards
Pavel
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