>>>>> "Alexander" == Alexander Kuzmenkov <a.kuzmen...@postgrespro.ru> writes:
Alexander> Structurally, the patch consists of two major parts: a Alexander> specialized executor node Why? It strikes me that the significant fact here is not that we're doing count(*), but that we don't need any columns from the bitmap heap scan result. Rather than creating a whole new node, can't the existing bitmap heapscan be taught to skip fetching the actual table page in cases where it's all-visible, not lossy, and no columns are needed? (this would also have the advantage of getting parallelism for free) -- Andrew (irc:RhodiumToad) -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
