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From: Bruce Momjian on 6 Feb 2010 16:15
Guy Rouillier wrote:
> On 1/6/2010 3:29 PM, Tom Lane wrote:
> > Guy Rouillier<guyr-ml1(a)burntmail.com> writes:
> >> Oracle states clearly in the SQL Reference manual:
> >
> >> "A modifier can appear in a format model more than once. In such a case,
> >> each subsequent occurrence toggles the effects of the modifier."
> >
> > *Toggles* the effect of the modifier? Egad, what drunken idiot chose
> > that specification?
>
> Eh, tomato, tomahto. If you assume that someone will strip leading
> zeroes consistently, the Oracle approach makes sense. That would be a
> reasonable assumption to make; why would I strip the zero off the month
> but leave it on the day? So, in the unusual case that you want to do
> such a thing, you are asked to use a second occurrence of FM to turn
> zero suppression back off.

I have developed the attached patch which implements FM control of YYY,
YY, and Y specifications. I also documented that we do not match
Oracle's toggle behavior. There are a few effects on regression test
output which are part of this patch.

--
Bruce Momjian <bruce(a)momjian.us> http://momjian.us
EnterpriseDB http://enterprisedb.com

+ If your life is a hard drive, Christ can be your backup. +
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