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Support for OUT parameters in procedures

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Unlike for functions, OUT parameters for procedures are part of the
signature.  Therefore, they have to be listed in pg_proc.proargtypes
as well as mentioned in ALTER PROCEDURE and DROP PROCEDURE.

Reviewed-by: Andrew Dunstan <andrew.dunstan@2ndquadrant.com>
Reviewed-by: Pavel Stehule <pavel.stehule@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/2b8490fe-51af-e671-c504-47359dc453c5@2ndquadrant.com
This commit is contained in:
Peter Eisentraut
2020-10-05 09:09:09 +02:00
parent e899742081
commit 2453ea1422
28 changed files with 416 additions and 93 deletions
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19
src/pl/plpython/sql/plpython_call.sql
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@ -54,6 +54,25 @@ $$;
CALL test_proc6(2, 3, 4);
-- OUT parameters
CREATE PROCEDURE test_proc9(IN a int, OUT b int)
LANGUAGE plpythonu
AS $$
plpy.notice("a: %s, b: %s" % (a, b))
return (a * 2,)
$$;
DO $$
DECLARE _a int; _b int;
BEGIN
_a := 10; _b := 30;
CALL test_proc9(_a, _b);
RAISE NOTICE '_a: %, _b: %', _a, _b;
END
$$;
DROP PROCEDURE test_proc1;
DROP PROCEDURE test_proc2;
DROP PROCEDURE test_proc3;