Mateusz Stefek <mateusz.ste...@gmail.com> writes: > Attached is a patch, which changes the order of the checks. I.e. the > visibility of the row is confirmed only after the qual condition is > evaluated to true.
This cannot be accepted, because it's unsafe to try to apply user code to a dead tuple. The tuple might reference toast data that's not there anymore, or in the worst case it might not even match the table rowtype anymore. Even without that problem, I would think that whether it is a win or not would be mighty workload-dependent. regards, tom lane -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers