On Wed, Dec 04, 2019 at 03:29:55AM -0800, James Salsman wrote: > Thank you for your thoughtful reply. This might be much easier: > > How about adding another example to > https://www.postgresql.org/docs/11/planner-stats.html ?
Not sure I see the parallel here. This page talks about planner statistics, and yours about being able to find missing indexes because of incorrect stats. > SELECT relname, seq_scan-idx_scan AS too_much_seq, > case when seq_scan-idx_scan>0 THEN 'Missing Index?' ELSE 'OK' END, > pg_relation_size(relid::regclass) AS rel_size, seq_scan, idx_scan > FROM pg_stat_all_tables > WHERE schemaname='public' AND pg_relation_size(relid::regclass)>80000 > ORDER BY too_much_seq DESC; Again. this is a bit more complex than that. -- Michael
signature.asc
Description: PGP signature
