| From: | Vik Fearing <vik(at)postgresfriends(dot)org> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
| Cc: | Trey Boudreau <trey(at)treysoft(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Discussion on a LISTEN-ALL syntax |
| Date: | 2024-12-21 04:12:19 |
| Message-ID: | 1491801c-0dd7-44d4-bc14-0695ca6f025f@postgresfriends.org |
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| Lists: | pgsql-hackers |
On 20/12/2024 23:45, Tom Lane wrote:
> Don't think that quite flies. We might have to regurgitate the
> state explicitly:
>
> LISTEN *
> UNLISTEN foo.*
> LISTEN foo.bar.*
>
> showing that we're listening to channels foo.bar.*, but not other
> channels beginning "foo", and also to all channels not beginning
> "foo".
Could I perhaps propose a sort of wildmat[1] syntax?
The above sequence could be expressed simply as:
LISTEN *,!foo.*,foo.bar.*
I would like this in psql's backslash commands, too.
[1] https://en.wikipedia.org/wiki/Wildmat
--
Vik Fearing
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