Postgres Incompatibility

Hi Experts

I noticed this problem when creating a backup on Postgres 13 and restoring it on Postgres 15.

CREATE FUNCTION sync.show_pg_subscription1() RETURNS SETOF pg_subscription
LANGUAGE sql
AS $$
SELECT * from pg_subscription;
$$;

The Postgres backup creates the view syntax with " FROM sync.show_pg_subscription1() show_pg_subscription1(oid, subdbid, subname, subowner, subenabled, subconninfo, subslotname, subsynccommit, subpublications);" The original syntax just had FROM sync.show_pg_subscription1() .

CREATE OR REPLACE VIEW sync.pg_subscription_view1
AS
SELECT show_pg_subscription1.oid,
show_pg_subscription1.subdbid,
show_pg_subscription1.subname,
show_pg_subscription1.subowner,
show_pg_subscription1.subenabled,
show_pg_subscription1.subconninfo,
show_pg_subscription1.subslotname,
show_pg_subscription1.subsynccommit,
show_pg_subscription1.subpublications
FROM sync.show_pg_subscription1() show_pg_subscription1(oid, subdbid, subname, subowner, subenabled, subconninfo, subslotname, subsynccommit, subpublications);
We get an error:
ERROR: column reference "subconninfo" is ambiguous LINE 8: show_pg_subscription1.subconninfo,

If we remove the part generated by Postgres backup " show_pg_subscription1(oid, subdbid, subname, subowner, subenabled, subconninfo, subslotname, subsynccommit, subpublications);" it works.

What can be done so backups will be able to restore correctly? I have a not so elegant solution, but I hope to hear a better solution than creating additional view:

create view abc as
SELECT
oid,
subdbid,
subname,
subowner,
subenabled,
subconninfo,
subslotname,
subsynccommit,
subpublications
from pg_subscription p;

CREATE FUNCTION sync.show_pg_subscription1() RETURNS SETOF abc
LANGUAGE sql
AS $$
SELECT * from abc;
$$;

SELECT show_pg_subscription1.oid,
show_pg_subscription1.subdbid,
show_pg_subscription1.subname,
show_pg_subscription1.subowner,
show_pg_subscription1.subenabled,
show_pg_subscription1.subconninfo,
show_pg_subscription1.subslotname,
show_pg_subscription1.subsynccommit,
show_pg_subscription1.subpublications
FROM sync.show_pg_subscription1() show_pg_subscription1(oid, subdbid, subname, subowner, subenabled, subconninfo, subslotname, subsynccommit, subpublications);

This works also with the additional part generated by Postgres backup

Thanks!
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