On Tue, Apr 3, 2012 at 7:21 PM, Jon Nelson <jnelson+pgsql@xxxxxxxxxxx> wrote: > On Tue, Apr 3, 2012 at 2:45 PM, Thomas Kellerer <spam_eater@xxxxxxx> wrote: >> Jon Nelson wrote on 03.04.2012 20:41: >> >>> Close, but not quite. It's not rotation but every N minutes a >>> newly-built table appears. I'd like that table to appear as part of >>> the view as soon as possible. >> >> >> Can't you use table inheritance for that? > > > Not efficiently. My view looks like this: > > select <bunch of stuff from table A>, DATE 'date string here' as > some_date_column > UNION ALL > select <bunch of stuff from table B>, DATE 'date string here' as > some_date_column > .... > > for lots and lots of tables. Storing that DATE would be cost > prohibitive and inefficient, since the same value would be used > throughout each 'sub' table.This let's me do queries that involve > 'some_date_column' and the query optimizer will remove the tables that > don't apply, etc. I was thinking it was something like that. Have you thought of using a pl/pgsql function with a built up and executed query to accomplish this? That way you'd get both the efficiency of your current method without having to rebuild views all the time. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
