On Thu, Nov 10, 2005 at 01:16:24PM +1100, Alex wrote:
> could anyone tell me if it is necessary to run a Vacuum after truncating
> a table or is that done automatically.
http://www.postgresql.org/docs/8.0/interactive/maintenance.html#VACUUM-FOR-SPACE-RECOVERY
"If you have a table whose contents are deleted on a periodic basis,
consider doing it with TRUNCATE rather than using DELETE followed by
VACUUM. TRUNCATE removes the entire content of the table immediately,
without requiring a subsequent VACUUM or VACUUM FULL to reclaim the
now-unused disk space."
--
Michael Fuhr