From: Richard Broersma <richard.broersma@gmail.com>
To: John Fabiani <johnf@jfcomputer.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: Dates and NULL's`
Date: Tue, 10 May 2011 10:16:21 -0700
Message-ID: <BANLkTina8jK3f_p0xynxgzQhpL2aCUsL6A@mail.gmail.com> (raw)
In-Reply-To: <201105100948.41392.johnf@jfcomputer.com>
References: <201105100948.41392.johnf@jfcomputer.com>
On Tue, May 10, 2011 at 9:48 AM, John Fabiani <johnf@jfcomputer.com> wrote:
> Where mydate >= "2011/04/01"::date and mydate<= "2011/04/30"::date
> With the above where will the NULL's be selected????
Here is what I get when I try:
spi=> SELECT NULL::DATE >= '2011-04-01'::DATE AND NULL::DATE <=
'2011-04-30'::DATE;
?column?
----------
(1 row)
spi=> SELECT (NULL::DATE >= '2011-04-01'::DATE AND NULL::DATE <=
'2011-04-30'::DATE) IS TRUE;
?column?
----------
f
(1 row)
spi=> SELECT (NULL::DATE >= '2011-04-01'::DATE AND NULL::DATE <=
'2011-04-30'::DATE) IS FALSE;
?column?
----------
f
(1 row)
spi=> SELECT (NULL::DATE >= '2011-04-01'::DATE AND NULL::DATE <=
'2011-04-30'::DATE) IS UNKNOWN;
?column?
----------
t
(1 row)
--
Regards,
Richard Broersma Jr.
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To: pgsql-sql@postgresql.org
Cc: richard.broersma@gmail.com, johnf@jfcomputer.com
Subject: Re: Dates and NULL's`
In-Reply-To: <BANLkTina8jK3f_p0xynxgzQhpL2aCUsL6A@mail.gmail.com>
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