Amit Langote <amitlangot...@gmail.com> writes: > On Wed, Jan 17, 2018 at 5:32 AM, Robert Haas <robertmh...@gmail.com> wrote: >> Aargh. Will apply this patch break pg_upgrade from v10?
> AFAICS, it doesn't. Partitioned tables that used to have a TOAST > table in v10 cluster will continue to have it after upgrading. > Whereas, any partitioned tables created with the patched won't have a > TOAST table. Yeah, pg_upgrade already has to cope with cases where the newer version thinks a table needs a toast table when the older version didn't, or vice versa. This looks like it ought to fall into that category. Not that testing it wouldn't be a good idea. regards, tom lane