libpq调用postgresql有返回值的函数方法

-- Function: for_test(integer, integer)

--DROP FUNCTION for_test(integer, integer);

CREATE OR REPLACE FUNCTION for_test(INOUT param1 integer, INOUT param2 integer)
RETURNS record AS
$BODY$
begin
select id,def_skill_id into param1,param2 from gangs where id = param1;
end
$BODY$
LANGUAGE plpgsql VOLATILE
COST 100;
ALTER FUNCTION for_test(integer, integer) OWNER TO postgres;

Mordor::PQ::Result rt1 = conn->execute("SELECT * from for_test(1,2)");
int a = (int)rt1.getType((size_t)0);
int id = rt1.get<int>((size_t)0, (size_t)0);
std::cerr << a << "   " << id << std::endl;

SELECT * from for_test(1,2)

SELECT for_test(1,2)