Date: Tue, 6 Mar 2001 13:33:23 +0100
From: Markus Fischer <mfischer@josefine.ben.tuwien.ac.at>
To: pgsql-sql@postgresql.org
Subject: Comparing dates
Message-ID: <20010306133323.A3880@josefine.ben.tuwien.ac.at>
Mail-Followup-To: Markus Fischer <mfischer@josefine.ben.tuwien.ac.at>,
	pgsql-sql@postgresql.org
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.3.15i

Hello,

I've a SELECT statement on many joined Tabled and one of them has
a date column called 'date_date'. When I fetch a date e.g.
'02-03-2001', I get, say, 60 results back. When I now perform the
same query with another date, lets take '03-03-2001', I get back
about 70 results.

When I now modify my query to get both results in one I write

SELECT
	....
FROM
	..
	AND
		date_date >= '2001-03-02'
	AND
		date_date <= '2001-03-03'
	AND
	....

I think I should get back the rows for both days, 60 + 70 makes
130 to me. But what I get back is even smaller then 60. I
allready tried TO_DATE conversion, an OR construct but always
the same result.

Is there something special to know when comparing/working with
date-datetypes ?


kind regards,
	Markus

-- 
Markus Fischer,  http://josefine.ben.tuwien.ac.at/~mfischer/
EMail:         mfischer@josefine.ben.tuwien.ac.at
PGP Public  Key: http://josefine.ben.tuwien.ac.at/~mfischer/C2272BD0.asc
PGP Fingerprint: D3B0 DD4F E12B F911 3CE1  C2B5 D674 B445 C227 2BD0