Doug McNaught <doug@wireboard.com> writes:
> "Dann Corbit" <DCorbit@connx.com> writes:
>> It would be nice if total table cardinality could be maintained live.
> How would this work with MVCC?
It wouldn't. That's why it's not there. Under MVCC, table cardinality
is in the eye of the beholder...
regards, tom lane