> That one's used, too, but the other is used as an upper bound. > n_distinct tends to come out too small on large tables, so that > formula is prone to overestimation. Actually, both formulas are prone > to overestimation. >
Right - thanks. > When this happens depends on the values of a whole boat-load of GUCs... Well, then doesn't the 'proper' number of buckets depend on a whole boat-load of GUCs... -Nathan -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
