From: | mark(at)mark(dot)mielke(dot)cc |
---|---|
To: | andrew(at)supernews(dot)com |
Cc: | pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: [BUGS] numerics lose scale and precision in views of unions |
Date: | 2006-08-10 13:22:46 |
Message-ID: | 20060810132246.GB15133@mark.mielke.cc |
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Lists: | pgsql-bugs pgsql-hackers |
On Thu, Aug 10, 2006 at 03:40:11AM -0000, Andrew - Supernews wrote:
> On 2006-08-10, Stephen Frost <sfrost(at)snowman(dot)net> wrote:
> >> Yeah, because numeric_cmp says that 1.0 and 1.00 are equal (what else
> >> could it say? "less" and "greater" are surely wrong). So you need to
> > It could say "not equal" pretty reasonably as the scale is
> > different.
> The comparison function must be trichotomous, that is the possible results
> are "equal", "greater", and "less". There is no other "not equal" result.
And it is wrong - because they are equal. But 1.0 is also equal to 1.01.
We shouldn't go there. :-)
Cheers,
mark
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