Re: proposal - plpgsql - support standard syntax for named arguments for cursors

Hi

so 8. 2. 2025 v 20:25 odesílatel Tom Lane <tgl@sss.pgh.pa.us> napsal:

> Pavel Stehule <pavel.stehule@gmail.com> writes:
> > I propose to enhancing to ANSI/SQL standard syntax for named arguments
> > `argname => value`
>
> Is there any reason to think that that's actually in the standard?
> I poked around in SQL:2021 a little and couldn't find anything about
> cursors with arguments at all.
>

I think the possibility to use named arguments in OPEN statements is a
PostgreSQL proprietary feature.
And usage of cursors in PL/pgSQL is based on PL/SQL (not on SQL/PSM from
standard), but named
arguments for cursor is PostgreSQL proprietary feature and the syntax based
on usage `:=` is our
proprietary too.

This is from patch
https://github.com/postgres/postgres/commit/4adead1d224278ff3064636063a818eba17cb211

It is from the window, when the named arguments was supported already

https://www.postgresql.org/message-id/20091008023926.1BE85753FB7@cvs.postgresql.org
(the syntax was changed before release)
but not with ANSI syntax
https://github.com/postgres/postgres/commit/865f14a2d31af23a05bbf2df04c274629c5d5c4d

I forgot to fix this in my patch for 9.5 - probably I missed this
functionality

Regards

Pavel



>
>                         regards, tom lane
>