From: Marc G. Fournier <scrappy@postgresql.org>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-sql@postgresql.org
Subject: Re: [HACKERS] ALTER TABLE ( smallinto -> boolean ) ...
Date: Thu, 1 Sep 2005 18:15:25 -0300 (ADT)
Message-ID: <20050901180607.V1044@ganymede.hub.org> (raw)
In-Reply-To: <6399.1125608205@sss.pgh.pa.us>
References: <20050829201253.X1044@ganymede.hub.org>
<15013.1125359379@sss.pgh.pa.us>
<20050901174341.N1044@ganymede.hub.org>
<6399.1125608205@sss.pgh.pa.us>
Moved off of -hackers, since its long gotten out of that realm :)
On Thu, 1 Sep 2005, Tom Lane wrote:
> "Marc G. Fournier" <scrappy@postgresql.org> writes:
>> On Mon, 29 Aug 2005, Tom Lane wrote:
>>> No, because there's no built-in cast from smallint to bool.
>
>> 'k, I just took a read through the "CREATE CAST" man page, and don't think
>> I can use that for this,
>
> Sure you can. Make a SQL or PLPGSQL function that does the conversion
> you want and then create a cast using it.
Ah, okay, I just re-read the man page and think I stumbled upon what I
overlooked the first time ...
all I want to do is:
CREATE CAST ( 0 AS boolean )
WITH FUNCTION <I have to create this>
AS ASSIGNMENT;
And then each time I try to insert a '0' into a BOOLEAN field, it will
auto convert that (based on my function) to 'f' ...
And I'd need to do a second one for 1 -> 't' ...
Am I reading it right this time ... ?
----
Marc G. Fournier Hub.Org Networking Services (http://www.hub.org)
Email: scrappy@hub.org Yahoo!: yscrappy ICQ: 7615664
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To: pgsql-sql@postgresql.org
Cc: scrappy@postgresql.org, tgl@sss.pgh.pa.us
Subject: Re: [HACKERS] ALTER TABLE ( smallinto -> boolean ) ...
In-Reply-To: <20050901180607.V1044@ganymede.hub.org>
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