Date Validation problem in form with report

Question

Hi,
I am stuck on this date validation issue in a form with report that I am working on-
I have an Active_date_start and an Active_date_end field. I want to validate the form in such a way that if the user enters the Active_date_end < active_date_start then it should error out appropriately asking to change the active_end_date . Also another problem is that the changes are made to the active_date_end they should reflect in the table. How do I accomplish this.
Appreciate all the help offered.
Thanks.

Answer 1

Hi,
Thanks for the code.Now the APPLY CHANGES works fine except that it throws an error when I change the end date to a date which is less than the start date . So it does show me my error and does not go further but also shows me the error -
Invalid PL/SQL expression condition: ORA-06550: line 1, column 29: PLS-00306: wrong number
or types of arguments in call to 'NVL' ORA-06550: line 1, column 7: PL/SQL: Statement
ignored Invalid PL/SQL expression condition: ORA-06550: line 1, column 29: PLS-00306:
wrong number or types of arguments in call to 'NVL' ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
I looked up the error number and it says its a generic error type where the error can be found on the line number specified. But in this case how and where do I look for the error line?. This is the code I am using-
DECLARE
vACTIVE_DATE_START DATE;
vACTIVE_DATE_END DATE;
BEGIN
vACTIVE_DATE_START := TO_DATE(:P4_ACTIVE_DATE_START, 'DD/MM/YYYY');
vACTIVE_DATE_END := TO_DATE(:P4_ACTIVE_DATE_END, 'DD/MM/YYYY');
IF vACTIVE_DATE_END < vACTIVE_DATE_START THEN
RETURN 'End date is before start date';
ELSE
RETURN NULL;
END IF;
END;
My base table has the active_date_start as NOT NULL. Now I have the exact same code for APPLY CHANGES
in other form and it works fine not giving the above error. I am at a loss to know how I can get rid of the error.
Any suggestions!.
Thanks in advance,
A