Alvaro Herrera <alvherre@xxxxxxxxxxxxxxx> writes: > Tom Lane wrote: >> Couldn't creation and deletion of a toasted object within the same >> transaction do it? > I tried and couldn't find a way to cause one to appear. When a row is > created, it has xmax=0 so when it's deleted the xmax can just be set to > the deleting xact. And we don't ever update pg_toast rows, AFAIK. Ah, nevermind, brain fade ... I was momentarily confusing this with combo CIDs. Right, there are no updates or row locks taken on toast table rows (unless someone were to do one manually?) regards, tom lane -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin
