Parent child find

Question

I have just started using SQL. What I am trying to do is find a specific user that is in the parent and in 37 child. So I have a script that tells me each child for the parent, but now I want to find a specific user inside each child. Here is my first script, any ideas on how to do this? so i have user 1334 in the parent table, how can I script it to show me which child has user 1334.
Thanks
select
child.owner || '.' ||
child.table_name "Child table",
'is child of' " ",
parent.owner || '.' ||
parent.table_name "Parent table"
from
dba_constraints child join dba_constraints parent on
child.r_constraint_name = parent.constraint_name and
child.r_owner = parent.owner
where parent.owner = 'MDL_BETA'
and parent.table_name = 'SI_USERS';

Answer 1

Hi, Dave,
Unfortunately, that still doesn't clarify what you want (at least for me).
It looks like you have a query that shows you the tables that have foreign-key relationships with the parent table, such as a constraint on the child_01 table which says that the only valid entries in child_01.parent_id are numbers that are already in parent.id. In other words, this shows you tables that are potentially linked (that is, your query finds table child_01, though there may not be any rows in child_01.)
Are you saying that you want to find tables that are actually linked, and linked by a certain value? (That is, do you want to include table child_01 only if it has at least one row where child_01.parent_id = 1334?)