On Tue, 29 Jun 2021 at 21:34, Robert Haas <robertmh...@gmail.com> wrote: > > I thought about this too, but > http://postgr.es/m/774767.1591985...@sss.pgh.pa.us made me think that > it would be an on-disk format break. Maybe it's not, though? >
No, because the numeric dscale remains non-negative, so there's no change to the way numeric values are stored. The only change is to extend the allowed scale in the numeric typemod. Regards, Dean