On Wed, Mar 11, 2020 at 2:13 PM Darren Lafreniere <dlafreni...@onezero.com> wrote: > when you restore a DB from a backup, does the restored index use the old > format or the latest one?
If you use pg_restore, it uses the latest index format. If you're using pg_upgrade, the version won't change unless and until you REINDEX. This includes cases where you're running pg_upgrade against a restored physical backup. -- Peter Geoghegan
