Re: Unused system table columns

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Rod Taylor <rbt(at)zort(dot)ca>, 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 06:12:52
Message-ID: 200207160612.g6G6Crp09260@candle.pha.pa.us
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Tom Lane wrote:
> Rod Taylor <rbt(at)zort(dot)ca> writes:
> > For all intent and purpose, pg_index.indisprimary can be added to that
> > list. Can't make a primary key without a pg_constraint entry.
>
> I disagree. For one thing, there are clients that look at that column.
> There's no percentage in breaking them to gain zero (and it will be
> zero, because of alignment considerations...)

Yes, pgaccess uses it, as I remember. Would be nice if it was accurate.

>
> indisclustered is currently pretty useless, but may become less so
> if CLUSTER gets upgraded to usefulness, so I'm not in favor of deleting
> that either.

Yea, I can see that being useful some day.

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