SQL & PL/SQL

Hi,

We are currently using Oracle Database 10.2.0.2.0.

In the following code, using a function to access TABLE fields works, but not when accessing the table fields directly (in the latter case, I get a no data found exception).

Why is that?

Thanks for your help.

Olivier
PS: I do have a lengthy explanation of why we would want to do that as well as the full packages, etc... But I didn't want to bore you to no end.
I'll post it if required.

CREATE OR REPLACE PACKAGE PA_TEST_DEVTBL AS
   TYPE TBL_ROLCODE IS TABLE OF LANROLE.ROLCODE%TYPE INDEX BY BINARY_INTEGER;
   TYPE TBL_ROLLABEL IS TABLE OF LANROLE.ROLLABEL%TYPE INDEX BY BINARY_INTEGER;
end PA_TEST_DEVTBL;
/
 

CREATE OR REPLACE PACKAGE BODY PA_TEST AS
   -- Array containing the selected data
   TblRolCode PA_TEST_DEVTBL.TBL_ROLCODE;
   TblRolLabel PA_TEST_DEVTBL.TBL_ROLLABEL; 
   
   -- Functions created to retrieve each array data
   FUNCTION F_GET_ROLCODE( nIndex NUMBER ) RETURN LANROLE.ROLCODE%TYPE IS
   BEGIN
      RETURN TblRolCode( nIndex );
   END F_GET_ROLCODE;
 
   FUNCTION F_GET_ROLLABEL( nIndex NUMBER ) RETURN LANROLE.ROLLABEL%TYPE IS
   BEGIN
      RETURN TblRolLABEL( nIndex );
   END F_GET_ROLLABEL;
 
   PROCEDURE S_TEST (
...
 
-- THIS DOESN'T WORK (ORA-01403: no data found)
OPEN cReturn FOR
SELECT TblRolCode( ROWNUM ),
TblRolLabel( ROWNUM )
FROM TABLE( CAST( tblRows AS T_TBL_NUMBER ) );

 -- BUT THIS WORKS !!!
OPEN cReturn FOR
SELECT F_GET_ROLCODE( ROWNUM ) AS ROLCODE,
F_GET_ROLLABEL( ROWNUM ) AS ROLLABEL
FROM TABLE( CAST( tblRows AS T_TBL_NUMBER ) );

..