Bruce Momjian <pgman@candle.pha.pa.us> writes:
> No, we have no ability to randomly pick rows to use for estimating
> statistics. Should we have this ability?
That would be really slick, especially given the fact that VACUUM runs
much faster than VACUUM ANALYZE for a lot of PG users. I could change
my daily maintenance scripts to do a VACUUM of everything, followed by
a VACUUM ANALYZE of the small tables, followed by a VACUUM ANALYZE
ESTIMATE (or whatever) of the large tables.
Even cooler would be the ability to set a table size threshold, so
that VACUUM ANALYZE would automatically choose the appropriate method
based on the table size.
Chris
--
chris@mt.sri.com -----------------------------------------------------
Chris Jones SRI International, Inc.
www.sri.com