Robert Haas <robertmh...@gmail.com> writes: > I do remember that discussion. Aside from the problem you mention, it > also seems that maintaining the hash table and doing lookups into it > would have some intrinsic cost.
Well, sure, but it's still far cheaper than going out to the toast table (which will require multiple hashtable lookups, not to mention I/O and possible lock blocking). If we could solve the refcounting problem I think this would be a very significant win. 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