to solve trigger

[UPHADE]

CREATE OR REPLACE PROCEDURE MFGNO(BODYSRNO IN VARCHAR2)
IS
MFGSRNO VARCHAR2(8);
mfgno varchar2(8);
cnt varchar2(3);
BDATE DATE;
BEGIN
Select year_code||TO_C HAR(SYSDATE, 'MMDD') INTO mfgno from year_master
where year in (select to_char(sysdate ,'yyyy') from dual);
select lpad(count(*)+1 ,3,0) into cnt from manu where
substr(bodysrno ,1,1) in ('U','S','P')
AND bdate IN (SELECT SYSDATE FROM DUAL);
mfgno:=mfgno||c nt;
UPDATE manu SET mfgsrno=MFGNO WHERE BODYSRNO IN(SELECT BODYSRNO FROM MANU) ;
DBMS_OUTPUT.PUT _LINE(MFGSRNO);
END;


this is the procedure to create the trigger using this and put the output in that way bodysrno,mfgsrn o,bdate in one table so pls help me for creating trigger

[rski]

Could you precise
1) what operation on what table should invoke the trigger
2) in what table do you want to insert the rows
3) this query

UPDATE manu SET mfgsrno=MFGNO WHERE BODYSRNO IN(SELECT BODYSRNO FROM MANU) ;

does not make sense to me, you update manu for all records which exists in manu.
it is equall to

UPDATE manu SET mfgsrno=MFGNO;

Also if you use IN you have to make sure that BODYSRN is not null.

Please put here table structures and describe how should it work.