Noah Misch <n...@leadboat.com> writes: > You cannot assume executor-unmodified columns are also unmodified from > heap_update()'s perspective. Expansion in one column may instigate TOAST > compression of a logically-unmodified column, and that counts as a change for > xlog delta purposes.
Um ... what about BEFORE triggers? Frankly, I think that expecting the executor to tell you which columns have been modified is a non-starter. We have a solution for HOT and it's silly to do the same thing differently just a few lines away. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers