Question

Hi I have the following Hierarchical Query. May I know how to include the start with pc.Parent=”abc” in the result too?

select pc.child
from parentChild pc
start with pc.Parent="abc"
connect by nocycle prior pc.child = pc.parent;

I’m using the above query to update all the child + start with parent values.

update person set ..... where person.id in (select pc.child
    from parentChild pc
    start with pc.Parent="abc"
    connect by nocycle prior pc.child = pc.parent)

May I know if there is a more effective way to update all the children and itself?

I’m considering taking out the list of children and updating them individually using hibernate.

Please share your suggestion 😀 thanks

Answer 1

A possible solution without inserting “parent,null child” values is using dual

select pc.child
from parentChild pc
start with pc.Parent="abc"
connect by nocycle prior pc.child = pc.parent
union
Select pc.parent from dual