Peter Eisentraut <peter_e@gmx.net> writes:
> Here is my thinking, and considering that that would basically involve a
> forward-looking design decision right now, I would support dropping the
> cardinality() function from 8.4 (if people agree that this is in fact the
> design decision to make).
At this point I'd support that too. It doesn't seem that getting
cardinality() into 8.4 is important enough to risk making a decision
that we'd regret later. And I think it's not hard to make the case
that we might regret either of the other choices later, depending on
where we go with arrays.
regards, tom lane