> With a table that large, you're probably going to need a larger stats > target in order to get reasonable estimates for low-frequency values. > Am I right in guessing that pg_stats.n_distinct is much too low for > the domain_id column?
the domain_id is in the topical urls. A select count of domains shows that there are 700 domains, the pg_stats shows 170 which seems kind of low but maybe is not out of bounds because most domains are probably inactive. pg_stats on the consolidated_urls table shows a very low value for index_delta. There are 1.8 million records and the n_distinct for index_delta is 151. It's a floating point number so that seems weird. For index it's 818. Both of those numbers are wildly wrong I would think. -- Sent via pgsql-bugs mailing list (pgsql-bugs@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-bugs
