Tree structure

From: Kaare Rasmussen <kar(at)webline(dot)dk>
To: pgsql-general(at)postgreSQL(dot)org
Subject: Tree structure
Date: 1999-02-26 08:06:01
Message-ID: 36D655E9.5F2A00DC@webline.dk
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I can't figure this one out. I need a tree structure like this

Number Pointer
1 0
2 1
3 1
4 2
5 0
6 1
7 5

This should somehow show up like this
Number
1
2
4
3
6
5
7

The whole excercise is because I'd like to show a tree structure:

1
- 2
- - 4
- 3
- 6
5
- 7

Is this possible with PostgreSQL?

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