Christopher Kings-Lynne <chriskl@familyhealth.com.au> writes:
> Can someone explain to me how:
> (a, b) < (1, 2)
> is different to
> a < 1 and b < 2
Right at the moment our code interprets it that way, but this behavior
is wrong per spec. It should be an ordered column-by-column comparison,
so that the equivalent simple expression is
(a < 1) OR (a = 1 AND b < 2)
regards, tom lane