How to delete or add columns in a DataTable.

Hi,
I need to delete/add columns for a DataTable programaticaly... Can anyone help me in this ??. In source code I added a datatable and lets take 3 columsn I added. While running application, I need to delete and add columns whenever I want.
Please help me....

can you give a sample code for this... I really want
this code...
just to re-confirm you, I want to add or delete
columns not rows...I don't have sample code, why don't you give it a try?

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Sathya

Hi,
In the PAI write this code
PROCESS AFTER INPUT.
LOOP AT itab.
ENDLOOP.
MODULE MODIFY_TC.
MODULE MODIFY_TC.
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Add Column Delete in report, How to delete row using this delete Option

Hi Friends,
i have a report ,iwant to add an option DELETE in last column.When i click on DElete then respective id sholund be deleted.
My Table Is
CREATE TABLE "DUMY_FILE"
   (     "ID" NUMBER,
     "NAME" VARCHAR2(500),
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Edited by: 805629 on Nov 16, 2010 11:51 PM

Trent,
Thanks for you suggestions. .. Let me explain my problem a little better ...
I have a report that lists fields associated with a report ... I have a delete icon which deletes a row and removes it from the underlying table ... however, I am trying to implement a Before header process which runs a pl/sql process that checks if the selected field is the last field in the report ... if so, I want a confirmation dialog to pop up ... if they click cancel .. then the deletion is aborted, else the field is deleted (which triggers other status changes).
Based on this logic if there is a way to implement this based on your suggestion I would appreciate it ...
Here is the process I was trying to use .... but the I have a few issues with this approach
declare
-- cursor to check if this is the last field
cursor fld_cnt is
select count(*) from prm_ptnr_rpt_fields
where report_uid = :P22_REPORT_UID;
num_flds number;
msg varchar2(300);
begin
open fld_cnt;
fetch fld_cnt into num_flds;
If num_flds > 1 then
delete from prm_ptnr_rpt_fields
where report_uid = :P22_REPORT_UID
and field_user_key = :P9_DELETED_FLD;
commit;
:P9_DELETED_FLD := NULL;
msg := :P9_FIELD_NAME || ' Field Excluded From Report' ;
apex_application.g_print_success_message := msg;
else
htp.p('<script type="text/javascript">');
htp.p('
var r=confirm("This is the last field included in this report .. \n Deleting it will Inactivate the report and remove it from schedule (if scheduled) ...\n Do you want to proceed?");
if (r==true)
{      delete from prm_ptnr_rpt_fields
where report_uid = :P22_REPORT_UID
and field_user_key = :P9_DELETED_FLD;
:P9_DELETED_FLD := NULL;
commit;
msg := :P9_FIELD_NAME || ' Field Excluded From Report' ;
update prm_ptnr_rpts
set report_status = 'INCOMPLETE',
active_report = 'N'
where report_uid = :P22_REPORT_UID;
msg := msg || ' and Report Status changed to INCOMPLETE';
apex_application.g_print_success_message := msg;
htp.p('}else {
alert("Delete Action Aborted");
htp.p('</script>');
End if;
Close fld_cnt;
end;
a) Even if I click cancel ... the field still gets deleted ...
b) :P9_DELETED_FLD is the id for the selected field ... I am setting it on the link attributes which places it on the URL ... I would rather user javascript (but not exactly sure how).
Thanks,
Gerald
Edited by: user5459177 on Feb 22, 2011 2:45 PM

How can I delete/add Columns in my Report?

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i´ve just a silly little question...
We´re using APEX to revise our Daily Reject-Rows and some other Dimensiontables.
For every Table, witch is to revise we´ve got a single Page in our APEX Application.
Also, in every Page we created a Report for our users,
so that they can revise the Data,
and published it in our intranet, using a Webserver.
Now my Question...
In one of these Pages we´ve more then 110 columns in the sql Region Source,
placed in the Region Definition.
But...in the Report Attributes, there are only shown 99 Columns.
I must integrate 3 or 4 more Columns from my Source Definitioned Table in the Report.
Where can i do this?
I only see how i can edit the columns, make them visible or hide them,
define their Propertys...but where can i add a new Column?
or delete one?
I´m very thankfull for every Awnswer :-)
Best Regards
LoneWolf

Ok, i found a Solution...
It seems to be a BUG. (?)
The Report Attributes will be realy generated automaticly
under using the Source Definition, but...
- There´s a Restriction in the Sum of all Columns,
it can be only 99 witch will be able to define and revise.
- If you´ver got more then 99 Columns in your Source
you have to specified them exactly, by Name
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It is not sufficiently if you change the Position of the Columns in the SQL Source (placed at the Region Definition).
I copied and pasted the Source SQL three Times,
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In the Moment as i define the needed Column,
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One possibility would be to use a DefaultTableModel to store the data but have JTable access it through your own table model which mapped the columns and altered the column count etc..Why go to all that trouble. If you just want to hide a column, then remove the TableColumn from the TableColumnManager.
The requirement was to remove the data as well.
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How to delete or add columns in a DataTable.

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