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Re: [HACKERS] Numeric overflow problem + patch

From: David Fetter <david(at)fetter(dot)org>
To: Martijn van Oosterhout <kleptog(at)svana(dot)org>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PG Hackers <pgsql-hackers(at)postgresql(dot)org>,PostgreSQL Patches <pgsql-patches(at)postgresql(dot)org>
Subject: Re: [HACKERS] Numeric overflow problem + patch
Date: 2006-09-28 21:21:19
Message-ID: 20060928212118.GJ22129@fetter.org (view raw or flat)
Thread:
Lists: pgsql-hackerspgsql-patches
On Thu, Sep 28, 2006 at 11:16:56PM +0200, Martijn van Oosterhout wrote:
> On Thu, Sep 28, 2006 at 05:11:43PM -0400, Tom Lane wrote:
> > David Fetter <david(at)fetter(dot)org> writes:
> > > ! DETAIL:  A field with precision 4, scale 4 must have an absolute value less than 1.
> > > [ becomes ]
> > > ! DETAIL:  A field with precision 4, scale 4 must have an absolute value less than 1 - 5 * 10^-5.
> > 
> > This strikes me as overly pedantic.  The message needs to be
> > clear, and the proposed change will just confuse people.
> 
> I don't know if the code can detect the difference, but a message
> like:
> 
> A field with precision 4, scale 4 must *round to* an absolute value
> less than 1

What does .999 round to?  How about .5?

> Since that more accurately describes the actual problem.

I'd say it doesn't, as worded.  Maybe some other wording would be
clearer.

Cheers,
D
-- 
David Fetter <david(at)fetter(dot)org> http://fetter.org/
phone: +1 415 235 3778        AIM: dfetter666
                              Skype: davidfetter

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