On Wed, 2006-03-01 at 14:27, Bruce Momjian wrote: > Scott Marlowe wrote: > > On Wed, 2006-03-01 at 14:18, Bruce Momjian wrote: > > > Stephan Szabo wrote: > > > > > justify_days doesn't currently do anything with this result --- it > > > > > thinks its charter is only to reduce day components that are >= 30 > > > > > days. > > > > > However, I think a good case could be made that it should normalize > > > > > negative days too; that is, the invariant on its result should be > > > > > 0 <= days < 30, not merely days < 30. > > > > > > > > What about cases like interval '1 month -99 days', should that turn into > > > > interval '-3 mons +21 days' or '-2 mons -9 days'? > > > > > > I think it should be the later. It is best to have a single sign, and I > > > think it is possible in all cases: > > > > > > '2 mons -1 days' > > > > > > could be adjusted to '1 mons 29 days'. > > > > There's a part of me that thinks the WHOLE THING should be positive or > > negative: > > > > -(2 months 1 day) > > But it isn't '-2 months, -1 day'. I think what you are saying is what I > am saying, that we should make the signs consistent.
Pretty much. It just seems wrong to have different signs in what is essentially a single unit. We don't say 42 degrees, -12 minutes when measuring arc, do we? Then again, maybe some folks do. It just seems wrong to me. ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings
