How to obtain the updated column name in a trigger?

Question

Hello everyone,
I need to know for audit propose the updated column name in a After Update Trigger on a Table.
The table have more than 20 columns, and i think that do more than 20 conditions asking for the difference between the :new value and the :old value is not the best way.
Thanks for the help!
LCJ

Answer 1

Hi,
Thanks to all for the replays.
I didn't know that i can pass the column name to the UPDATING. This is only possible on 10g??
Any way, i pass the column name and works fine, but i have another issue because of that.
I obtain the column name from a cursor that query user_tab_columns view, when i try to obtain the value of the :old or :new, i can't because i don't know how to obtain the value of the value.
This example show better:
DECLARE
vOldValue Varchar2(50);
Cursor cur_Column_Names Is
Select COLUMN_NAME
From User_Tab_Columns
Where TABLE_NAME = 'table_name';
BEGIN
For var_cursor In cur_Column_Names Loop
If Updating(var_cursor.COLUMN_NAME) Then
vOldValue := '?'; -- How obtain the value of the :old. + >var_cursor.COLUMN_NAME??
End If;
End Loop;
END;Thanks to all for the help.
LCJ