Tomas Vondra wrote: > attached is a WIP patch implementing multivariate statistics.
I think that is pretty useful. Oracle has an identical feature called "extended statistics". That's probably an entirely different thing, but it would be very nice to have statistics to estimate the correlation between columns of different tables, to improve the estimate for the number of rows in a join. Yours, Laurenz Albe -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
