Re: Hierarchical queries

Paulo,

> how do you usually handle hierarchical (tree-like) queries? I'm sure someone
> else needed this already.

Yup!
Please see:
http://techdocs.postgresql.org/
... which has at least one article on trees.

Also, Joe Celko's book, SQL for Smarties ( reviewed at
http://techdocs.postgresql.org/bookreviews.php ) has chapters on the two main
approaches to tree structures in fairly exhaustive detail. Buy the book. Or,
the condensed version of some of that information was posted to the list by
Joe Celko last summer; you can hunt for it in the archives.

-Josh Berkus

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