How to set group radio default null value option?

I have a dynamic LOV that appears as a group of radio buttons. I want to display null values (Null display value set to 'All values') to use a custom search page. How to set the default to "all values"? I tried to use the value default '% null' area without success.

O all values (value zero)
O Option 1
O Option 2
Option 3

Hello

In order to ensure that "ALL" is selected, you must do a few things:

1. on the definition of your radiogroup, set the following parameters:

Display Null: No.
Value null, display value: (leave empty)
Value null, return value: (leave empty)

2. then, update the list of parameter values to include a NULL value. Something like:

SELECT ' ALL ' d, -1 r FROM DUAL
UNION ALL
SELECT DNAME d, DEPTNO r FROM DEPT ORDER BY 1

(in this way, EVERYTHING becomes a part of the data). Note that in this example, I used-1 as "return value zero"-that's because I use a numeric field (DEPTNO). Change a string if you are using a field of VARCHAR2.

3. create a new calculation of Page. It should run on the radiogroup element header before. The calculation would be a static assignment of the "return value zero" you set above - in my example, it is -1 the calculation should depend on the value of the element being null radiogroup. This, I found it, is the best way to make sure you get a default value before the page is loaded.

I did all this on: [http://apex.oracle.com/pls/otn/f?p=33642:216]. My report SQL query is then:

SELECT EMPNO, ENAME, DEPTNO
FROM EMP
WHERE :P216_DEPTNO = -1 OR DEPTNO = :P216_DEPTNO

Andy

Tags: Database

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