Hannu Krosing <hannu@skype.net> writes:
> What if we would just reuse the root tuple directly instead of turning
> it into a stub ?
> This would create a cycle of ctid pointers, which changes the lookup
> process from 'follow ctid chaint until the end' to 'follow the tid chain
> until you reach the start'.
How do you know which one is newest? What happens when you have to put
a newer version off-page for lack of space?
regards, tom lane