Re: Have I found an interval arithmetic bug?

On Fri, Jul 30, 2021 at 12:04:39PM -0400, Bruce Momjian wrote:
> On Wed, Jul 28, 2021 at 11:19:16AM -0400, Bruce Momjian wrote:
> > On Wed, Jul 28, 2021 at 08:42:31AM +0100, Dean Rasheed wrote:
> > > So it's equal even without calling justify_interval() on the result.
> > >
> > > FWIW, I remain of the opinion that the interval literal code should
> > > just spill down to lower units in all cases, just like the
> > > multiplication and division code, so that the results are consistent
> > > (barring floating point rounding errors) and explainable.
> >
> > Here is a more minimal patch that doesn't change the spill-down units at
> > all, but merely documents it, and changes the spilldown to months to
> > round instead of truncate.
>
> Unless I hear more feedback, I plan to apply this doc patch to all
> branches with the word "rounded" changed to "truncated" in the back
> branches, and apply the rounded code changes to master.

Now that I think of it, I will just remove the word "rounded" from the
back branch docs so we are technically breaking the documented API less
in PG 15.

--
Bruce Momjian <bruce(at)momjian(dot)us> https://momjian.us
EDB https://enterprisedb.com

If only the physical world exists, free will is an illusion.