How to conditionally display a tab (or not) based on APP_USER?

Hi,
I want to put a condition on the display of a tab based on the value of APP_USER. There are two columns in the table and APP_USER must exist in one of these two columns in order for the tab to display. If APP_USER isn't in either of these 2 columns, the tab does not display. These 2 columns are different levels of management, and if the user isn't a manger, I don't want the tab to display.
Another requirement: APP_USER will be [email protected], but the values in the table are only firstname.lastname. So, I need to do a rtrim of APP_USER to remove @email.com.
I've tried several options, but can't seem to get it right. Suggestions?

From a database design aspect, that is a bad design. You should really create a column called "role" and then put the values in that column, ie Unlimited, limited, manager, user, readonly, etc.
then you queries would be:
select * from SH_EMPLOYEES where upper(USER_NAME) = upper(:APP_USER)
and role="Unlimited".
Else you will have to create a column for each new role you need. You really want to avoid using column name that are "intelligent". It doesn't make for a flexible design.

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How to conditionally display a tab (or not) based on APP_USER?

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