On Tue, Jan 16, 2018 at 11:38:58PM -0500, Tom Lane wrote: > 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.
As far as I can see this statement is true. If you create a parent partition table in a v10 cluster, and then upgrade to HEAD with this patch applied, you'll be able to notice that the relation still has its toast table present, while newly-created parent partitions would have nothing. (Just tested, I didn't review the patch in details). -- Michael
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