PG Bug reporting form <noreply(at)postgresql(dot)org> writes:
> Foreign key constraints have the option to list the columns that should be
> changed in ON DELETE/ON UPDATE SET NULL/SET DEFAULT. For the ON DELETE case
> these columns can be inspected with pg_catalog.pg_constraint.confdelsetcols,
> but there is no such column for the ON UPDATE case. Is this an oversight?
It's intentional, see here:
https://www.postgresql.org/message-id/flat/85f8fcae-5a85-0d81-ae72-12c8a5cb271e%40enterprisedb.com#b7a607d6496828fd21caf2b6bd2b0f07
regards, tom lane