From: Bruno Wolff III <bruno@wolff.to>
To: Chris Travers <chris@travelamericas.com>
Cc: Matt L. <survivedsushi@yahoo.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: nullif('','') on insert
Date: Sat, 27 Aug 2005 08:56:29 -0500
Message-ID: <20050827135629.GA1965@wolff.to> (raw)
In-Reply-To: <43100C05.7020309@travelamericas.com>
References: <20050821014023.92296.qmail@web35209.mail.mud.yahoo.com>
<43100C05.7020309@travelamericas.com>
> Your problem is that NULL's are typed in PostgreSQL.
>
> Try this:
>
> SELECT NULL;
> SELECT NULL::BOOL;
> SELECT NULL::BOOL::TEXT;
>
> to see what I mean. This is an exact illustration of your problem.
Note that in 8.1 he will be able to do:
SELECT NULL::TEXT::INT::BOOL
and get the conversion he wants as long as he sticks to using 0 and 1 to
code for false and true.
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To: pgsql-sql@postgresql.org
Cc: bruno@wolff.to, chris@travelamericas.com, survivedsushi@yahoo.com
Subject: Re: nullif('','') on insert
In-Reply-To: <20050827135629.GA1965@wolff.to>
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