Re: [HACKERS] Happy column dropping

Hannu Krosing <hannu@tm.ee>

From: Hannu Krosing <hannu@tm.ee>

To: Don Baccus <dhogaza@pacifier.com>

Cc: The Hermit Hacker <scrappy@hub.org>, Bruce Momjian <pgman@candle.pha.pa.us>, Tom Lane <tgl@sss.pgh.pa.us>, Peter Eisentraut <peter_e@gmx.net>, PostgreSQL Development <pgsql-hackers@postgresql.org>

Date: 2000-01-23T22:19:25Z

Lists: pgsql-hackers

Don Baccus wrote:
> 
> At 12:04 AM 1/24/00 +0200, Hannu Krosing wrote:
> 
> >It could possibly be done by marking the column deleted and doing the
> >compression/renumbering during vacuum , or by locking the table and
> >compressing each page in-place if space is a concern or maybe several
> >other ways.
> >The existence of several ways to do it should not discourage people
> >from actually adding the drop column feature to postgres
> 
> It should provide even more encouragement to discuss the proposed
> implementation *first*.

Judging from the length of this thread it is much more effective to get 
a discussion *after* ;)

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Hannu