Hi, I have a table containing many millions of rows.
This table has a tree stucture, with the following columns
id
name
parent_id
I need to go through the tree, starting from a specific Id, to find
all the rows with a specific name.
If I use the following:
SELECT id, name
FROM Mytable
WHERE name = 'XYZ'
STARTING WITH id = &1
CONNECT BY id = PRIOR id;
I will find them, but if will traverse the complete tree structure,
even below the rows that contains name='XYZ'. The XYZ can be near the
starting point, let say 2 or 3 levels, when the tree structure can go
down to 50 levels and more (the table is used to store complex SGML
documents).
Is there a way, to save processing time, to say to the query : "Do not
go below XYZ ?" eg when you encounter the 'XYZ' stop connecting below
and go to another branch ?
Thank you
Bernard Drolet
