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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Andrew Hammond <ahammond@ca.afilias.info>
Cc: pgsql-sql@postgresql.org
Subject: Re: date - date returns integer?
Date: Fri, 04 Mar 2005 23:36:20 -0500
Message-ID: <14000.1109997380@sss.pgh.pa.us> (raw)
In-Reply-To: <4228CC16.7020900@ca.afilias.info>
References: <4228CC16.7020900@ca.afilias.info>

Andrew Hammond <ahammond@ca.afilias.info> writes:
> Should date - date return type integer, not interval?

If we made it return interval then there would be all sorts of timezone
dependencies introduced (think about DST crossings) ... which is
generally something you don't want to think about when doing date
arithmetic.  I think the definitions of these operators are fine.

			regards, tom lane



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