join across branches in tree structure

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August 23rd, 2004, 08:26 AM

steve_davidson

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Join Date: Aug 2004

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join across branches in tree structure

I have the following tree structure that allows the lowest level to have multiple parents. Basically, I am using the tree to categorize documents.

id name parent_id

1 parent null
2 language 1
3 cobol 2
10 doc3 3
8 doc1 3
4 java 2
11 doc4 4
9 doc2 4
5 resource_type 1
6 techdocs 5
10 doc3 6
11 doc4 6
7 manuals 5
8 doc1 7
9 doc2 7

Now i want to give a list of documents for cobol arranged by resource type such that my output looks like this:

language

cobol
techdoc
doc3
manual
doc1

Is it possible to do this via a single sql query?

August 23rd, 2004, 10:07 AM

Sasi242

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Hi Steeve

Use CONNECT BY AND START WITH..

Regards
Sasidhar.P

August 23rd, 2004, 07:01 PM

steve_davidson

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Join Date: Aug 2004

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Time spent in forums: < 1 sec
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well, connect by and start with will get me the whole tree, or parts of the tree, but I want to join two branches of the treen.

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