LOV with subselect shows return_value instead of display_value

Question

Hi,
I have the following dynamic SQL based LOV with a union in it that does not display correctly in the application.
SELECT role_name d, role_seq r
FROM apex_app_roles ar
WHERE security_level = 1
AND :F2500_APP_USER in
(SELECT au.user_id FROM
apex_app_user au,
apex_app_user_roles auar
WHERE ar.role_seq = auar.role_seq
AND auar.user_seq = au.user_seq)
UNION
SELECT role_name d, role_seq r
FROM APEX_APP_ROLES ar
WHERE security_level = 0
ORDER BY 1
The problem I have is the first part of the SQL is displaying the return_value instead of the display_value. If I comment out the following the proper value is displayed in the application.
AND :F2500_APP_USER in
(SELECT au.user_id FROM
apex_app_user au,
apex_app_user_roles auar
WHERE ar.role_seq = auar.role_seq
AND auar.user_seq = au.user_seq)
We currently have version 4.0.1.00.03 installed.
Is there an issue with this version and what I am trying to do or is there something wrong with what I'm doing? The SQL returns the proper results if I run it in the SQL workshop so I'm at a loss here and if anyone can help it would be greatly appreciated.
Thanks,
Bruce

Answer 1

The value is correct. I can run the entire SQL in workshop using parameter substitutions and it returns all the values correctly. So running this
SELECT role_name d, role_seq r
FROM apex_app_roles ar
WHERE security_level = 1
AND :F2500_APP_USER in
(SELECT au.user_id FROM
apex_app_user au,
apex_app_user_roles auar
WHERE ar.role_seq = auar.role_seq
AND auar.user_seq = au.user_seq)
UNION
SELECT role_name d, role_seq r
FROM APEX_APP_ROLES ar
WHERE security_level = 0
ORDER BY 1
returns all the rows and looks like this.
D     R
ACP_ADMIN     3
READ_ONLY     2
READ_WRITE_ALL     1
SERVICE_DESK_ADMIN     4