Re: Can this be done with a trigger?

On Aug 6, 8:09 am, Aya the Vampire Slayer <ry..._at_gatech.rmv.this.part.edu> wrote:
> artme..._at_yahoo.com wa:
>
> >On Aug 6, 3:23 am, "Shakespeare" <what..._at_xs4all.nl> wrote:
> >> Do you look for inserting and updating as well in your trigger (since you
> >> only posted part of your code)? Or else your triggers fires on an update and
> >> performs an insert.
>
> >The trigger fires on insert or update. The actual trigger code is
> >here. Do you see anything wrong with it?
> >CREATE OR REPLACE TRIGGER customer_config_trg
> > INSTEAD OF UPDATE OR INSERT ON customer_config_vw
> > FOR EACH ROW
> >BEGIN
> > IF INSERTING THEN
>
> You also need to write your INSERT dml for the main table here before
> inserting into the HIST table. An INSTEAD OF trigger doesn't do it
> automatically like BEFORE/AFTER triggers do.
>
> INSERT INTO CUSTOMER_CONFIG
> VALUES (...);
>
> > INSERT INTO customer_config_hist
> > VALUES
> >(:NEW.customer_id, :NEW.product_id, :NEW.format, :NEW.status, :NEW.source,
> >SYSDATE);
> > END IF;
> > IF UPDATING THEN
>
> Same here, you also need to write the UPDATE dml for the main table here
> before inserting an entry into the HIST table.
>
> UPDATE CUSTOMER_CONFIG
> SET FOO = :new.FOO
> (...)
> where (...);
>
> > IF :NEW.format IS NOT NULL THEN
> > INSERT INTO customer_config_hist
> > VALUES
> >(:NEW.customer_id, :NEW.product_id, :NEW.format, :OLD.status, :NEW.source,
> >SYSDATE);
> > ELSIF :NEW.status IS NOT NULL THEN
> > INSERT INTO customer_config_hist
> > VALUES
> >(:NEW.customer_id, :NEW.product_id, :OLD.format, :NEW.status, :NEW.source,
> >SYSDATE);
> > END IF;
> > END IF;
> >END;
> >/
>
> --
> "Care must be exorcised when handring Opiticar System as it is apts to
> be sticked by dusts and hand-fat." --Japanese Translators
>
> "Keep your fingers off the lens." --Elton Byington, English Translator

This is VERY interesting. If you look above at my table definitions, the last column, SOURCE, is not in the original table that the view is based on, but is created as a column because it is needed in the second view.

If I perform an insert using a NULL for the value of that column, as below, it works fine. But, if I put a value in for that column, it aborts:

SQL> desc customer_config_vw

 Name                                      Null?    Type
 ----------------------------------------- --------
----------------------------
 CUSTOMER_ID                                        NUMBER
 PRODUCT_ID                                         VARCHAR2(10)
 FORMAT                                             VARCHAR2(4)
 STATUS                                             VARCHAR2(15)
 DATE_ADDED                                         DATE
 DATE_MODIFIED                                      DATE
 SOURCE                                             VARCHAR2

insert into customer_config_vw
 values (1234,'PFP','Text','Active',SYSDATE,SYSDATE,NULL);

1 row created.

insert into customer_config_vw
values (67890,'PPM','HTML','Unsubscribe',SYSDATE,SYSDATE,'A'); insert into customer_config_vw
*
ERROR at line 1:
ORA-03113: end-of-file on communication channel

Any thoughts on this??? Received on Wed Aug 06 2008 - 08:21:47 CDT