| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Jelte Fennema <postgres(at)jeltef(dot)nl> |
| Cc: | Peter Eisentraut <peter(at)eisentraut(dot)org>, Dave Cramer <davecramer(at)gmail(dot)com>, Merlin Moncure <mmoncure(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Jeff Davis <pgsql(at)j-davis(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Request for comment on setting binary format output per session |
| Date: | 2023-10-09 18:59:53 |
| Message-ID: | CA+Tgmob0CJto=o0Z9wwvP4ANtUxNO9rg3t5URKTQyXWuOrZ4PA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Mon, Oct 9, 2023 at 11:09 AM Jelte Fennema <postgres(at)jeltef(dot)nl> wrote:
> Since the protocol already returns OIDs in the ParameterDescription
> and RowDescription messages I don't see why using OIDs for this GUC
> would cause any additional problems.
...but then...
> With Citus the same user defined type can have
> different OIDs on each of the servers in the cluster.
I realize that your intention here may be to say that this is not an
*additional* problem but one we have already. But it seems like one
that we ought to be trying to solve, rather than propagating a
problematic solution into more places.
Decisions we make about the wire protocol are some of the most
long-lasting and painful decisions we make, right up there with the
on-disk format. Maybe worse, in some ways.
--
Robert Haas
EDB: http://www.enterprisedb.com
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