The following bug has been logged on the website: Bug reference: 8274 Logged by: Andrew Gierth Email address: and...@tao11.riddles.org.uk PostgreSQL version: 9.1.9 Operating system: any Description:
The guy on IRC who ran into this one was using 9.1.9, but it seems to still exist in master. The handling of freq_null for estimating IS NOT TRUE/FALSE for boolean columns which are all null or almost all null (enough that analyze doesn't find any non-null values to put in MCV) is completely off in the weeds. Suggested fix at: https://gist.github.com/RhodiumToad/5901567 -- Sent via pgsql-bugs mailing list (pgsql-bugs@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-bugs
