I wrote:
> Either way, requiring a dump/reload for upgrade is surely a better answer
> for users of the type than just summarily screwing them.
BTW, after reflecting a bit more I'm less than convinced that this
datatype is completely useless. Even if you prefer to store currency
values in numeric columns, casting to or from money provides a way to
accept or emit values in whatever monetary format the LC_MONETARY locale
setting specifies. That seems like a useful feature, and it's one you
could not easily duplicate using to_char/to_number (not to mention that
those functions aren't without major shortcomings of their own).
A quick trawl through the git history for cash.c indicates that most of
the bug fixes it's gotten recently have concerned doing formatting
correctly for non-US-like LC_MONETARY settings, so I think there are
indeed people out there who care about that capability.
Certainly we could package that capability in another way besides a
datatype, but I think we should actually do so (and give users a release
or two to switch over) before we consider nuking the type.
regards, tom lane
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