Re: 'insert or update trigger' to update the same table

You have to state your goal more precise. If you only intent to update the current record (i.e. The record

already being procesed in the trigger) then dont use sql-statement, but

only normal plsql-code.
Simply set
if (:new.status = true ) then
:new.desc = =to char(sysdate);
end if;

(I take that the serial is a unique key simply is eferring to the record  

already being processed in the trigger)
If you really want to update other records (than the actual one being

processed) in a trigger then you must use a whole diferent approach.

>>>>>>>>>>>>>>>>>>  <<<<<<<<<<<<<<<<<<
 

> Hi!
 

> Maybe it's just a simple problem for some of you, but I really
> desparate to find the solution.
 

> This is my trigger
 

> CREATE OR REPLACE TRIGGER OBJ
 
> BEFORE INSERT OR UPDATE ON OBJ
 
> FOR EACH ROW
 
> BEGIN
> update OBJ
> set OBJ.DESCR=to char(sysdate)
> where status=true and serial=:new.serial
> END;

> I get an error that the table is mutating.
> I know the reason of this error, but I can't find any other solution.
 

> I think I have to use row level trigger since I have to know the
> serial from the row which is updated or inserted.
 

> I've tried to create a view and then an INSTEAD OF TRIGGER, but I
> always get an error which said that my trigger is invalid (I use TOAD
 

> to write my trigger)
 

> Thank you in advance!!
 

> sien
Received on Tue Aug 28 2001 - 00:16:31 CEST