From: PFC <lists@peufeu.com>
To: pgsql-sql@postgresql.org
Subject: Re: [HACKERS] Interval subtracting
Date: Wed, 08 Mar 2006 22:23:05 +0100
Message-ID: <op.s535oruacigqcu@apollo13> (raw)
In-Reply-To: <1141832866.6249.7.camel@state.g2switchworks.com>
References: <200603012027.k21KRk423759@candle.pha.pa.us>
<1141245396.18820.16.camel@state.g2switchworks.com>
<440EC8FF.9080201@logix-tt.com>
<1141832866.6249.7.camel@state.g2switchworks.com>
> For same reasons, i.e. a need for precision, I find it hard to accept
> the idea of mixing positive and negative units in the same interval.
> The plus or minus sign should be outside of the interval.
The interval data type is really useful. I see no reason to restrict its
usefulness with an arbitrary constraint. Date arithmetic is treacherous
and INTERVAL is a lifesaver.
Forcing a global sign on the interval would break interval arithmetic.
How would you compute '1 month'::interval - '1 week'::interval ?
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To: pgsql-sql@postgresql.org
Cc: lists@peufeu.com
Subject: Re: [HACKERS] Interval subtracting
In-Reply-To: <op.s535oruacigqcu@apollo13>
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