Re: NULLs: theoretical problems?
From: Eric <eric_at_deptj.demon.co.uk>
Date: Sun, 12 Aug 2007 16:17:17 +0100
Message-ID: <slrnfbu93t.uge.eric_at_tasso.deptj.demon.co.uk>
Date: Sun, 12 Aug 2007 16:17:17 +0100
Message-ID: <slrnfbu93t.uge.eric_at_tasso.deptj.demon.co.uk>
On 2007-08-12, -CELKO- <jcelko212_at_earthlink.net> wrote:
> Try this for the casting of NULLs to data types:
>
> CREATE VIEW Foobar (a, b, c)
> AS
> VALUES (CAST (NULL AS INTEGER),CAST (NULL AS REAL), CAST (NULL AS
> DATE));
>
> There are several other place where you need this.
>
Meaning
CREATE VIEW Foobar (a INTEGER, b REAL, c DATE)
AS
VALUES (NULL, NULL, NULL);
I'm not sure the former should even be allowed, and you would only
think of it if you assumed that NULL was a value - as you might
have gathered, my opinion is that it is not.
-- EricReceived on Sun Aug 12 2007 - 17:17:17 CEST