PLS-00526 when comparing (=) 2 objects of the same kind

Question

Hi,
Here are the specs :
Oracle 8.1.7.4 Database Server
Object definition :
type ocedule as object
noetabl number(15),
ced_ceduleid number(15),
datedebutapplication date,
datefinapplication date,
ced_cdtypecedule varchar2(10),
ced_cdmotifabsence varchar2(10),
ced_indpresentddebut number(1),
ced_indpresentdfin number(1),
ced_datedebut date,
ced_datefin date,
ced_datesaisie date,
ced_placementid number(15),
ced_presentdim varchar2(1),
ced_presentlun varchar2(1),
ced_presentmar varchar2(1),
ced_presentmer varchar2(1),
ced_presentjeu varchar2(1),
ced_presentven varchar2(1),
ced_presentsam varchar2(1),
codemodule number(2)
My PL/SQL code goes as follows :
CREATE OR REPLACE function compare_ocedule return number is
ocedule_journalisation ocedule;
ocedule_entrepot ocedule;
begin
     if ocedule_journalisation = ocedule_entrepot then
     return 1;
     else
     return 0;
     end if;
end;
when I compile, I get the following error :
PLS-00526: A MAP or ORDER function is required for comparing objects in PL/SQL.
Anyone can help???
Thanks.
JC

Answer 1

hehe...right...
I just found the problem...Testing for equality has to be done in SQL...not in PL...so I replaced the IF clause with SQL code. Here is the modified function :
CREATE OR REPLACE function compare_ocedule return number is
ocedule_journalisation ocedule;
ocedule_entrepot ocedule;
cursor c_test is
select 1 as comp_value
from dual
where ocedule_journalisation = ocedule_entrepot;
r_test c_test%rowtype;
begin
open c_test;
fetch c_test into r_test;
close c_test;
return r_test.comp_value;
end;
JC