wrong output in dump of rules with old values of row type columns - Mailing list pgsql-bugs

for example

create table test(a int);

create table test_log(old test);
create rule del as on delete to test do insert into test_log values(old);

it works as intended

postgres=# insert into test values(1);
INSERT 0 1
postgres=# delete from test;
DELETE 1
postgres=# select * from test_log
postgres-# ;
 old
-----
 (1)
(1 row)

BUT
\d test shows

postgres=# \d test
                Table "public.test"
 Column |  Type   | Collation | Nullable | Default
--------+---------+-----------+----------+---------
 a      | integer |           |          |
Rules:
    del AS
    ON DELETE TO test DO  INSERT INTO test_log (old)
  VALUES (old.*)


and pg_dump makes wrong rule

--
-- Name: test del; Type: RULE; Schema: public; Owner: postgres
--

CREATE RULE del AS
    ON DELETE TO public.test DO  INSERT INTO public.test_log (old)
  VALUES (old.*);

when i try to recreate it from dump


drop rule del on test  ;

CREATE RULE del AS
    ON DELETE TO public.test DO  INSERT INTO public.test_log (old)
  VALUES (old.*);

ERROR:  column "old" is of type test but expression is of type integer
LINE 3:   VALUES (old.*);
                  ^
HINT:  You will need to rewrite or cast the expression.

if i remove .* part - all OK

postgres=# CREATE RULE del AS
    ON DELETE TO public.test DO  INSERT INTO public.test_log (old)
  VALUES (old);
CREATE RULE

So i think it's bug, and both \d and pg_dump should return

 VALUES (old) instead of  VALUES (old.*) in this case

'new' instead of 'old' makes same result

postgres=# CREATE RULE ins AS
    ON INSERT TO public.test DO  INSERT INTO public.test_log (old)
  VALUES (new);
CREATE RULE
postgres=# \d test
                Table "public.test"
 Column |  Type   | Collation | Nullable | Default
--------+---------+-----------+----------+---------
 a      | integer |           |          |
Rules:
    del AS
    ON DELETE TO test DO  INSERT INTO test_log (old)
  VALUES (old.*)
    ins AS
    ON INSERT TO test DO  INSERT INTO test_log (old)
  VALUES (new.*)


it same on ver 11 and 14, don't tried other versions







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