Re: SET NULL / SET NOT NULL

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: Peter Eisentraut <peter_e(at)gmx(dot)net>, Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au>, Doug McNaught <doug(at)wireboard(dot)com>, Philip Warner <pjw(at)rhyme(dot)com(dot)au>, Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: SET NULL / SET NOT NULL
Date: 2002-02-22 03:02:04
Message-ID: 200202220302.g1M324905891@candle.pha.pa.us
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Tom Lane wrote:
> Peter Eisentraut <peter_e(at)gmx(dot)net> writes:
> > Using the standard precedent above, how about
>
> > ALTER TABLE blah ALTER COLUMN col SET NOT NULL;
> > ALTER TABLE blah ALTER COLUMN col DROP NOT NULL;
>
> This seems like a good choice if we are not too concerned about
> compatibility with other DBMSes. (Which, for something like this,
> I'm not; how many applications will be issuing programmed commands
> like this?)

Yes, I like this too; the SET/DROP symetry.

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