Compound trigger for mutating

Question

hi guys,
Need you mastery about mutating table.
how can I rewrite sample trigger below, in compound trigger to avoid mutating table?
oracle version:
Oracle Database 11g Release 11.1.0.7.0 - 64bit Production
PL/SQL Release 11.1.0.7.0 - Production
"CORE 11.1.0.7.0 Production"
TNS for Linux: Version 11.1.0.7.0 - Production
NLSRTL Version 11.1.0.7.0 - Production
Table1 has (col1,col2,col3,col4)
Table2 has(col1,col2,col3,col4,col5)
Table3 has(col1,col2,col3,col4,col5)
Table4 has(col1,col2,col3,col4)
Create or replace trigger tble1_after_insert
after insert on tabl1
referencing old as old new as new
for each row
Begin
Insert into table4
( select table1.col1,table1.col2,table2.col3,table3.col4
where table1.col1 = table2.col1 (+)
and table2.col3 = table3.col3(+)
and table.col1 = :new.table1.col1)
End;
Mutating problem will occur on table1, that's why I need to convert the script on compound trigger.
If there will be a better way rather than compound trigger kindly share your ideas.
thank you in advance

Answer 1

zacky wrote:
Hi Guys,
Thanks for the references.
@ Paul thanks for the idea, follow up question I have another condition on where clause; below is the actual script
(part of insert into Table select statement)
SELECT O.order_id,
COALESCE (dl.isbn, cl.isbn, ol.product_id) eisbn,
CO.organisation_id,
O.order_status,
O.order_type,
CL.collection_id,
DECODE(cl.concurrency_flag, 0, 0, 1, cb.concurrency_limit) access_limit
FROM ebook_order O,
ebook_isbn_data_load DL,
ebook_order_line OL,
ebook_collection_list CL,
ebook_concurrency_band CB,
consortium_organisation CO,
ebook_order O
WHERE o.order_id = ol.order_id
AND ol.product_id = cl.collection_id(+)
AND cl.isbn = dl.ean13_of_set(+)
AND o.concurrency_band_code = cb.concurrency_band_code
AND o.body_id = co.consortium_id
AND o.order_status = '4'
AND o.order_type IN ('P','G','S')
AND o.order_id = 10020743
since I created the trigger on ebook_order, then I need to remove that table in order to avoid mutating it is possible
to do something like script below
SELECT :new.order_id,
COALESCE (dl.isbn, cl.isbn, ol.product_id) eisbn,
CO.organisation_id,
:new.order_status,
:new.order_type,
CL.collection_id,
DECODE(cl.concurrency_flag, 0, 0, 1, cb.concurrency_limit) access_limit
FROM
ebook_isbn_data_load DL,
ebook_order_line OL,
ebook_collection_list CL,
ebook_concurrency_band CB,
consortium_organisation CO,
ebook_order O
WHERE :new.order_id = ol.order_id
AND ol.product_id = cl.collection_id(+)
AND cl.isbn = dl.ean13_of_set(+)
AND :new:concurrency_band_code = cb.concurrency_band_code
AND :new.body_id = co.consortium_id
how about on this part? I'm not sure with this one
AND o.order_status = '4'
AND o.order_type IN ('P','G','S')
AND o.order_id = 10020743
unless I can put IF THEN statement if something like below code
If :new.order_status = 4 and (:new.order_type ='P' or :new.:new.order_type ='G' or :new.order_type='S') then
thanks in advanceHow about:
and :new.order_status = 4
and :new.order_type in ('P','G','S')
and :new.order_id = 10020743Though it strikes me as unusual to have a trigger that only does something when a particular order id is inserted.
BTW Please read {message:id=9360002} and follow the advice there. In particular
the bit about formatting your code and putting it between tags.
Also, try to get out of the habit of upper casing your SQL - it's very COBOL (i.e. old-fashioned and not much use).