TRIGGER - how to auto fill a column with the sequence

Hello

I have a table that contains information about the customers... I have bound him to a form of the APEX so that when a user enter information through a form he generates a sequence/trigger number and saves it in the column (named tracking_NO)... I use this tracking_no as key for monitoring purposes.

My problem is that when the admin will post information from MS access to Oracle, it generates automatically a number for my column 'tracking_No '... Please advice how to use the same trigger Auto Fill a column (tracking_no) when the value is zero.

Here's my trigger

CREATE OR REPLACE TRIGGER B.T_CUSTOMER_TRG
BEFORE THE INSERT OR UPDATE
ON B.T_CUSTOMERS
REFERRING AGAIN AS NINE OLD AND OLD
FOR EACH LINE
Start
If: NEW. "' TRACKING_NO ' is null then
Select T_CUSTOMER_SEQ.nextval in: NEW. "' TRACKING_NO ' from dual;
end if;
end;
/

Two copies.
I really think this is a bug coding causing this duplication.

Published by: PhoenixBai on December 25, 2010 21:50

Tags: Database

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