On Mon, 19 Jan 2009 14:41:12 +0000 Richard Huxton <dev@xxxxxxxxxxxx> wrote: > Ivan Sergio Borgonovo wrote: > > On Mon, 19 Jan 2009 14:19:51 +0000 > > Richard Huxton <dev@xxxxxxxxxxxx> wrote: > > > >> Igor Katson wrote: > >>> Is there a way to watch all dependencies recursively without > >>> doing a drop? > > > >> BEGIN; > >> DROP CASCADE... > >> -- check things > >> ROLLBACK; > > > > Isn't it going to be a pretty expensive way to see? > Not necessarily - you're not likely to have a lot of concurrency > on a backup database. And we are all testing this sort of stuff on > a backup database, aren't we? Isn't it going to be expensive even if there is no concurrency? mvcc should be pretty efficient to rollback transactions but... well it should have a cost anyway... and you add deleting to rolling back, not just traversing some schema somehow. Surely recursively traversing a schema may be expensive in termos of programming time if there is no pre-build function. -- Ivan Sergio Borgonovo http://www.webthatworks.it -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
