"David E. Wheeler" <da...@justatheory.com> writes: > I wonder, then, whether .string() should be modified to use the ISO format in > UTC, and therefore be immutable. That’s the format you get if you omit > .string() and let result be stringified from a date/time/timestamp.
What "let result be stringified" behavior are you thinking of, exactly? AFAICS there's not sensitivity to timezone unless you use the _tz variant, otherwise it just regurgitates the input. I agree that we should force ISO datestyle, but I'm not quite sure about whether we're in the clear with timezone handling. We already had a bunch of specialized rules about timezone handling in the _tz and not-_tz variants of these functions. It seems to me that simply forcing UTC would not be consistent with that pre-existing behavior. However, I may not have absorbed enough caffeine yet. regards, tom lane