Re: AW: ALTER TABLE DROP COLUMN

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Zeugswetter Andreas SB <ZeugswetterA(at)wien(dot)spardat(dot)at>
Cc: The Hermit Hacker <scrappy(at)hub(dot)org>, Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, Hiroshi Inoue <Inoue(at)tpf(dot)co(dot)jp>, PostgreSQL Development <pgsql-hackers(at)postgreSQL(dot)org>
Subject: Re: AW: ALTER TABLE DROP COLUMN
Date: 2000-10-12 14:38:37
Message-ID: 26043.971361517@sss.pgh.pa.us
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Zeugswetter Andreas SB <ZeugswetterA(at)wien(dot)spardat(dot)at> writes:
> My conclusion would be that we need both:
> 1. a fast system table only solution with physical/logical column id
> 2. a tool that does the cleanup (e.g. vacuum)

But the peak space usage during cleanup must still be 2X.

regards, tom lane

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