Tom Lane schrieb am 11.11.2014 um 17:08: >> Does this mean that pg_get_expr() selects additional data from the table, >> instead of just using the values that are provided by the caller? > > No, it means it depends on backend code that is also used when accessing > the table "for real", and that code doesn't work safely without a lock. > (In particular, a lot of what ruleutils.c does ultimately reduces to > catalog cache lookups, and we can *not* allow stale data in those caches.) Ah! Understood. Thanks for the explanation. Thomas -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
