OptionTitle & selecting null value

I have an Option [] bound to a DropDown. In the Option [] is an element of OptionTitle. I need my dropdown to set a selected value of null when the OptionTitle is selected.
What happens at the moment is:
If the underlying field is null the OptionTitle is selected (good)
If I select an option the underlying value is selected. (good)
If I reselect the OptionTitle the underlying value is not modified (bad).
Any suggestions?

sd4139, thanks for the suggestions: I'd go that route if i had to but the following workaround works for me:
Add an Option with Value "" (empty string) Description "-None-" or whatever you want. the IntegerConverter in my case seems to convert this to a null. I suspect that the StringConverter does the same.
I'm using one array for several dozen dropdowns over various pages so the valuechange event was gonna be a nightmare to implement.

Similar Messages

Error while selecting NULL value from Popup Key LOV(numeric or value error)

Hi,
I have a item P1_DEPTNO with following properties.
P1_DEPTNO - Popup Key LOV (Displays description, returns key value)
LOV - P1_DEPT_LOV
select deptname d, deptno r from deptP1_DEPTNO item properties
List of Values
Named LOV - P1_DEPT_LOV
Display Null - Yes // changed to Yes, so that it can accept NULL values.
Null display value - NULL
Null return value -   (blank)PL\SQL Process -
declare
v1 number;
begin
if :P1_DEPTNO is null OR :P1_DEPTNO = '' then
    v1 := 0;
else
    v1 := :P1_DEPTNO;
end if;
// rest of the PL\SQL process
end;Now, when I run the page and select NULL value from Popup LOV and submit, I get the following error.
ORA-06502: PL/SQL: numeric or value error: character to number conversion error.When, I select any other value other than NULL, then it's working perfectly fine.
Only in case of NULL value, I am getting this error.
ANY idea, why this error is coming??
Thanks,
Deepak

Hi Varad,
I did the following change
Null display value - (blank) // by default it is displaying '%' in the select this
Null return value - -1
but when I select % (null value) from the popup list, it displays the return value -1 in the text field.
My question is why it is displaying the return value -1 in the text field...*It should display the display value in the text field (i.e blank in this case)*
then, I did the following change
Null display value - (blank) // by default it is displaying '%' in the select this
Null return value - // a single space, so that when I select %(null value) from the list, it should display blank in the text field...
then I did the following change in the PL\SQL process.
PL\SQL process
declare
v1 number;
begin
if :P1_DEPTNO = ' ' then // -- checking the value of single space ' ' when we select %(null) in the popup list, BUT even I select %(null), control is not coming here.
    v1 := 0;
else
    v1 := :P1_DEPTNO;
end if;
// rest of the PL\SQL process
end;Thanks,
Deepak

Selection of Null Value in Transformation file

Hi Guru's,
I've been trying to select NULL values of a field in transformation file but unfortunately system always gets both null and filled values of the field ALTHOUGH i had maintained the Selection Option.
Data management package is: Load Transaction Data from BW InfoProvider UI
The technical name of field: 0FLAG
I've tried each possibilities as in below
SELECTION: 0FLAG, *STR()
SELECTION: 0FLAG, *STR();
SELECTION: 0FLAG, ""
SELECTION: 0FLAG, " "
SELECTION: 0FLAG, NULL
SELECTION: 0FLAG, *STR(#)
SELECTION: 0FLAG, #
SELECTION: 0FLAG, "#"
Doesn't work.
thanks in adv. for your precious supports

Hi Sadi,
I understand your question that, you want to load tr. data from infocube and you have a trouble with one field which name is "0flag" in this cube, right? If your case is above, you need conversion file for flag, and convert like that # = "DUMMY" or sth.
Or, you can solve in BW with transformation file routine.
I hope, it will help you.
Thanks.

Validations: Null value for LOVs

See http://htmldb.oracle.com/pls/otn/f?p=24317:239
I have a "Item is not null" validation on that LOV item. The item has "Display null value" set to Yes and a LOV of STATIC2:1,2,3
If I leave the Null return value for the item to blank, the engine defaults it to %null% and the validation "knows" that this is really the same as a null value and so it kicks in (good).
But if I change the Null return value to something like %, the validation doesn't complain, it thinks that this is a not-null value.
Why the inconsistency? Does this mean that we are expected to use the default value of the Null return value i.e. leave it blank and let the engine put in %null%?
Comments? Thanks

Vikas - The declarative not null validation types recognize "actual" null or %null% as null values. This equivalence holds in numerous other situtations during page processing. Why does %null% get special treatment? A convention was chosen and that's it. And it works for almost everybody in almost all situations. In other words, it's useful, if not perfect. If you want a different value, you can specify one in the LOV (as you described). Then you can recognize and convert these values to null or %null% in an after-submit computation so that validations and other mechanisms work normally. (Perhaps it would help if the Builder created such a computation for items having LOVs with specified null values.) One use case for using a specified null return value might be where you want to distinguish a POSTed "actual" null value from the selected "null" value for which you have specified a null return value. Then you can tell if the value was selected from the LOV or whether it got a null value from the item's cache or source methods.
Scott

Null value in a select-option

Hi all,
I have the follow question:
can I populate a range vith a null value?
I have a field in a standard table which can be "space" or "null". But if I insert:
sign = I
option = EQ
low = space
records with "null" field aren't extracted by the select statement. So is there any way to populate:
low = null or something similar?
Best Regards,
Raffaele Frattini

If the field is of type char then you need to wrte the same in quotes woth caps
else
declare
constants : c_null type i value '0'.
then assign the same
You check the null value using INITIAL laso.

How to put the null value at the last of a select list

Hello,
I have a select list with a null value, I want the null value to be the last value in the list. It always appears in the top of the list, Desc and Asc order is not working.
Thank you in advance!
Edited by: Najla on Apr 1, 2013 10:37 PM

Hi,
Edited by: Howard (... in Training) on Apr 2, 2013 1:xx PM
The statement - I don't think it is possible to arrange the order of the null option in a select list.- is close. You can't control the order of the Null value if you add the Null value through the GUI. However, it can be added and controlled as part of a SELECT ...
One way is to add NULL to the "SELECT". Here the Yes/No are hard-coded but they could have been selected from a table:
select d, r from
select 'YES' d, 'Y' r from dual
union all
select 'No' d, 'N' r from dual
union all
select Null d, '<Null>' r from dual
) order by 1 desc NULLS lastHoward

How to select instances without null value?

hye all,
i need to do th ereprocessing data whereas i have to select the instances without null value from the database..
for example:
id name
123 izza
345 alex
567
the id = 567 contain null value..so..its automatically will not be selected from the database...
how about if it have about 10 or more attributes to be selected..
how can i work with the SQL thanks..

Hi,
Query for your example should like like this:
SELECT * FROM <your_table>
WHERE name is null;
how about if it have about 10 or more attributes to be selected..
If using 10 or more attributes you mean 10 or more columns with null use this:
SELECT * FROM <your_table>
WHERE <col1> is null AND <col2> is null etc...Peter D.

How no to select lines with NULL values

Hi,
I am not a newbie newbie in SQL but I do not understand why I cannot retrieve the lines where there are null values.
The table observatoire.fiche has 2 columns with default values set to NULL : total_heures, and total_heures_exceptionnelles. These are numeric types columns.
I want not to select lines where :
total_heures equal NULL AND total_heures_exceptionnelles = NULLI have tried this but I do get an "Invalid relational operator" error message.
select a.nom || ' ' || a.prenom d, a.agent_id r
from   OBSERVATOIRE.AGENT a, observatoire.fiche b
where a.agent_id = b.agent_id
and    b.total_heures NOT NULL AND total_heures_exceptionnelles NOT NULL
group by a.nom, a.prenom, a.agent_id
order by a.nomCould you help me ?
Thank you for your kind answers.

Satyaki_De wrote:
I think this is not the good way to do it. Did you check my solution? It should work the same output as your solution.Really ?
test@ORA10G>
test@ORA10G> -- (1)
test@ORA10G> with t as (
2    select 1 as x, 10 as total_heures, null as total_heures_exceptionnelles from dual union all
3    select 1, null, 20   from dual union all
4    select 1, null, null from dual union all
5    select 1, 30, 40     from dual)
6 --
7 select x, total_heures, total_heures_exceptionnelles
8 from   t
9 where x = 1
10 AND NOT ( total_heures IS NULL
11            AND
12            total_heures_exceptionnelles IS NULL
13          );
         X TOTAL_HEURES TOTAL_HEURES_EXCEPTIONNELLES
         1           10
         1                                        20
         1           30                           40
test@ORA10G>
test@ORA10G> -- (2)
test@ORA10G> with t as (
2    select 1 as x, 10 as total_heures, null as total_heures_exceptionnelles from dual union all
3    select 1, null, 20   from dual union all
4    select 1, null, null from dual union all
5    select 1, 30, 40     from dual)
6 --
7 select x, total_heures, total_heures_exceptionnelles
8 from   t
9 where x = 1
10 AND    total_heures IS NOT NULL
11 AND    total_heures_exceptionnelles IS NOT NULL;
         X TOTAL_HEURES TOTAL_HEURES_EXCEPTIONNELLES
         1           30                           40
test@ORA10G>
test@ORA10G>isotope

Select list null value issue - for filtering the tabular form report

hello,
I have a tabular form created on emp table and in the table their are entries for the employees who don't have a location, like it is null for some of the employees.
Now I have created a select list item - for filtering the results based on location.
my select query for select list item is
select distinct location_name d,location_id r from emp order by 1
-- so my select list contains all the distinct location_name including the null on my tabular form.
so based on the selelcted value(in the select list), I am able to filter the results in my tabular form.
but the thing is that when i try to select an null value from my select list - i am not able to filter my report - like its displaying all the records, its not filtering.
can anyone help me out with this.
thanks.

Hi
Try below select for LOV
select distinct nvl(location_name,'No Location') d,nvl(location_name,'No Location') r from emp order by 1 And then change tabular from select where clause also use nvl(location_name,'No Location') like
SELECT *
FROM emp
WHERE nvl(location_name,'No Location') = :Px_YOUR_ITEMBr, Jari

How to select only rows which column has a null value?

Hi,
I adds rows to my table with data field set to null;
"INSERT INTO administrator.subzamowienia (subzamowienia.id_zamowienia,subzamowienia.id_transakcji,subzamowienia.nazwa_o,subzamowienia.nazwa_produktu,subzamowienia.ilosc,subzamowienia.nip_d,subzamowienia.data_realizacji) VALUES (administrator.id_zamowienia.curval,'0','PRAGA','Witaminy','2','43224','0');"
Then i would like to update this field after a time with new date.
To do this i need to know which rows has still data field set to null, i try sth like this but it doesn't work
"SQL> select * from administrator.subzamowienia where subzamowienia.data_realizacji='null';
select * from administrator.subzamowienia where subzamowienia.data_realizacji='null'
BŁĄD w linii 1:
ORA-01841: (pełny) rok musi być pomiędzy -4713 i +9999 i nie może być 0
or
"SQL> select * from administrator.subzamowienia where subzamowienia.data_realizacji='0';
select * from administrator.subzamowienia where subzamowienia.data_realizacji='0'
BŁĄD w linii 1:
ORA-01840: wartość wejściowa jest za krótka dla formatu daty
how to choose this rows?

Hi,
VALUES (administrator.id_zamowienia.curval,'0','PRAGA','Witaminy','2','43224','0');I don't see null value...
select * from administrator.subzamowienia where subzamowienia.data_realizacji='null'Should be :
select * from administrator.subzamowienia where subzamowienia.data_realizacji is nullNicolas.

Select list -null value?

When you create a select list on a column, and run the page for the first time, the drop down doesn't show any value. I realized that once you click on the drop down to see what the values are, at the bottom of the list there is a blank value. But you can only see this the first time you load the page. Once you click on any other value, that blank value is gone. How does this work? How can I select the blank value even after you had selected other values previously?
Thanks,

Modify the Item Definition's List of Values options (Edit Page Item->LOV)
Display Null: Yes
Null Display Value:

Radiogroup - Null value selected

See http://htmldb.oracle.com/pls/otn/f?p=24317:26
Both the radiogroup item and the select list item have the exact same LOV and Source properties
LOV is STATIC2:1,2,3
Show Null is set to Yes with a Null display value of All and return value of %
Source value is set to %
But no matter what I do, the All radiobutton doesn't appear selected when the page is run. The All select list option is selected.
Why the inconsistent behaviour, how can I get the "null value" for the radiogroup item to come up selected?
Thanks

Problem was caused by the "Display Null = "Yes" and the %null% problem" feature (http://inside-apex.blogspot.com/2006/12/display-null-yes-and-null-problem.html ) of the ApexLib framework. Which isn't desirable in his application scenario.
Informed Dave how it can be disabled.
From the mail:
ApexLib has some function to set the LOV Null indicator (most time %) to NULL for easier processing. You can disable that behavior by adding the $APEXLIB_IGNORE_LOV_NULL$ hint to this lov item. See http://inside-apex.blogspot.com/2006/12/display-null-yes-and-null-problem.html for details. If you want to disable that feature for your hole application remove the ApexLib_Lov.clearLovNullValues call in your application process "ApexLib-Before Computation/Validation"
Patrick
My APEX Blog: http://inside-apex.blogspot.com
The ApexLib Framework: http://apexlib.sourceforge.net
The APEX Builder Plugin: http://sourceforge.net/projects/apexplugin/

To extract null Values from the source in Infopackage selections - Very Urg

Hi All,
I need to pull the data which has null values from source. I tried to write routine by giving l_t_range-low = '' , space. nothing is working.
Please guide me with sample code.
Very Urgent.
Regards
Mano

Hi Mario.
Assuming that you want to avoid uploading of records having
zero for a keyfigure:
Create a startroutine for transfer rules and add this coding:
DELETE DATAPAK WHERE VALUE = '0'.
OR
LOOP AT DATAPAK.
IF DATAPAK-VALUE = 0..
DELETE DATAPAK.
ENDIF.
ENDLOOP.
'VALUE' represents the fieldname in transferstructure
Please let me know if i misundersttod the issue.
Regards
Joe

Not to display the null values from data base

Hiiii.
In a jsp file i have ten check boxes.The jsp file is mapped to a servlet file for parameter requesting and to
store it in DB.
The unchecked box values has null values.All the values are store in a Mysql DB table.
Again i have to display it in a jsp page from table.
The problem am facing was,how can i display only the values in a row.it must not display the null values and the crresponding column name.
Or any other way is their like below
How i can retrieve only the selected check boxes from tht jsp file.and store in backend.
Thanks in Advance
regards,
satheesh kannan

Here is a rough example that may give you some ideas:
On the JSP page:
<%if(myData.getFirstName()!=null){%>
Your First Name'
<input type="text" name="firstName" value="<%=myData.getFirstName()%>">
<%}%>
In the servlet:
String firstName= request.getParameter("firstName");
if(firstName!=null){
//write it to the database
}

JDBC MS Access--- cannot extract entry with null value with data type Meta

I'm trying to extract a data entry with null value by using JDBC. The database is MS Access.
The question is how to extract null entry with data type memo? The following code works when the label has data type Text, but it throws sqlException when the data type is memo.
Any advice will be appreciated! thanks!
Following are the table description and JDBC code:
test table has the following attributes:
Field name Data Type
name Text
label Memo
table contents:
name label
me null
you gates
Code:
String query = "SELECT name, label FROM test where name like 'me' ";
ResultSet rs = stmt.executeQuery(query);
while (rs.next())
String name = rs.getString("name");
rs.getString("val");
String label = rs.getString("label");
System.out.println("\t"+name+"\t"+label);
catch (SQLException ex)
System.out.println(ex.getSQLState());
System.out.println(ex.getErrorCode());
System.out.println("in sqlexception");
output:
C:\Temp\SEFormExtractor>java DBTest
yet SELECT name, label FROM test
null
0
in sqlexception

The question is how to extract null entry with data type memo?Okay, what you need to do is this:
if (rs.getString("val") == null)
// do something
}This way, when it's a null value, you can check it first, and then handle it how you want, rather than getting an exception.

OptionTitle & selecting null value

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