How do we want to handle the case where VACUUM FULL clears the
visibility map, causing loss of index-only scans?
http://archives.postgresql.org/pgsql-performance/2012-11/msg00317.php
Do we document this behavior or add a TODO item?
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ It's impossible for everything to be true. +