Hi,
Is it possible to define or implement a type in PostgreSQL not all
values of which are comparable to each other? In particular I'm thinking
of a duration type similar to the XML Schema duration type[1]. For
example P2D (2 days) is less than P4D (4 days), but P1M (1 month) and
P30D (30 days)
Markus Bertheau [EMAIL PROTECTED] writes:
Is it possible to define or implement a type in PostgreSQL not all
values of which are comparable to each other?
Certainly, as long as you don't expect to be able to btree-index it,
sort it, or DISTINCT it. (In theory we could probably handle DISTINCT
Markus Bertheau wrote:
Is it possible to define or implement a type in PostgreSQL not all
values of which are comparable to each other? In particular I'm
thinking of a duration type similar to the XML Schema duration
type[1]. For example P2D (2 days) is less than P4D (4 days), but P1M
(1
