| From: | Josh Berkus <josh(at)agliodbs(dot)com> |
|---|---|
| To: | David Fetter <david(at)fetter(dot)org>, SF Postgres <sfpug(at)postgresql(dot)org> |
| Subject: | Re: running aggregates entirely in SQL? |
| Date: | 2004-05-11 19:35:30 |
| Message-ID: | 200405111235.30227.josh@agliodbs.com |
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| Lists: | Postg롤 토토SQL : Postg롤 토토SQL 메일 링리스트 : 2004-05-11 이후 SFPUG 19:35 |
David,
> > On the Celko note - has anyone implemented his nested tree model?
> > It's really great for arbitrarily deeply nested hierarchies.
>
> See contrib/ltree.
ltree isn't a nested set ... it's a combination text chain and adjacency list.
--
-Josh Berkus
Aglio Database Solutions
San Francisco
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