Ralph Graulich <maillist@xxxxxxxxx> writes:
> select upper_inf(tsrange('2013-05-01'::timestamp, 'infinity'::timestamp, '[]'));
> upper_inf
> -----------
> f
> (1 row)
> As far as I understood the docs, this query should return true, as the upper bound includes 'infinity'?
No, that's the point of the sentence about the range mechanisms not
understanding special values of the underlying type. upper_inf tests
for a range with no upper bound, period. It would need some
type-specific special knowledge to do what you're hoping for, and it
has not got that.
regards, tom lane
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