From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Hannu Krosing <hannu(at)tm(dot)ee> |
Cc: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, Peter Eisentraut <peter_e(at)gmx(dot)net>, PostgreSQL Development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Unused system table columns |
Date: | 2002-07-16 06:13:06 |
Message-ID: | 4272.1026799986@sss.pgh.pa.us |
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Lists: | pgsql-hackers |
Hannu Krosing <hannu(at)tm(dot)ee> writes:
>> We can always re-add the columns them.
> But would it not be nice if we could add uniform binary protocol without
> requiring initdb ?
That won't happen, because the existing contents of those columns are
completely useless for a binary-protocol feature.
If we do ever add such a feature, we'd be better off adding new columns
with a different name, just to avoid confusion over what's supposed to
be there. (For example: extant pg_dump scripts for user-defined types
will try to load wrong values into those columns if given a chance.
We *must* use new names for those slots in CREATE TYPE to avoid that
pitfall, and so we might as well change the system column name too.)
regards, tom lane
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