Need PL/SQL Command for to check all rows value for child record and update

Question

Hi All,
i want to update one field following by
one to many relationship for example
in child applet status field is value is "Closed" for all child record then parent value also should update to closed
Note: if one child record field status is "Open" don't do the update operation

Answer 1

You can do it in single UPDATE operation.
Here is sample & Result:
create table PA (id varchar2(3), name varchar2(12), STATUS varchar2(12));
insert into pa values('001','Cary','Open');
insert into pa values('002','TOM','Open');
create table boy (par_id varchar2(3), id varchar2(4), name varchar2(12), status varchar2(12));
insert into boy values('001','ABC1','Cary','Open');
insert into boy values('001','ABC2','Mac','Closed');
insert into boy values('001','ABC3','Ray','Closed');
insert into boy values('001','ABC4','NALLY','Open');
insert into boy values('002','ABC5','ME','Closed');
insert into boy values('002','ABC6','SHE','Closed');
UPDATE PA
SET STATUS='Closed'
WHERE NOT EXISTS
  (SELECT 1
  FROM BOY
  WHERE BOY.PAR_ID=PA.id
  GROUP BY BOY.PAR_ID,
    BOY.STATUS
  HAVING SUM(DECODE(BOY.STATUS,'Open',1,'Closed',0,0))>0
select * from pa;
001     Cary     Open
002     TOM     Closed