From: Marko Tiikkaja <marko@joh.to>
To: pgsql-docs@postgresql.org
Subject: Re: ALTER TABLE lock level
Date: Fri, 31 May 2013 14:46:38 +0200
Message-ID: <51A89BAE.6000704@joh.to> (raw)
In-Reply-To: <51A37A72.5000203@joh.to>
References: <51A37A72.5000203@joh.to>
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On 5/27/13 5:23 PM, I wrote:
> Today I got (unfortunately) reminded that this statement, in
> sql-altertable.html under VALIDATE CONSTRAINT, is not true anymore:
>
> The value of separating validation from initial creation of the
> constraint is that validation requires a lesser lock on the table than
> constraint creation does.
Since nobody seems to want to pick this up, I'm going to suggest the
following wording:
The value of separating validation from initial creation of the
constraint is that you can immediately start enforcing the
constraint on all future rows, but delay the validation of
pre-existing data until your database is not under heavy load.
But I'm not going to object to simply removing the entire sentence.
Regards,
Marko Tiikkaja
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To: pgsql-docs@postgresql.org
Cc: marko@joh.to
Subject: Re: ALTER TABLE lock level
In-Reply-To: <51A89BAE.6000704@joh.to>
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