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To: "Oleg Bartunov" <oleg@sai.msu.su>,
	"Axel Straschil" <axel@straschil.com>
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Subject: Re: How to store directory like structures?
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> you need to load ltree into your database !
> psql yourdb < ltree.sql
>
> use 'locate ltree.sql' to find if ltree is installed

	Yeah, I remember now having to do that, but the binary module definitely  
was here without having to do anything besides "emerge postgresql" :

peufeu@nyuu peufeu $ locate ltree.so
/usr/lib/postgresql/ltree.so

peufeu@nyuu peufeu $ locate ltree.sql
/usr/share/postgresql/contrib/ltree.sql

	So just :

psql yourdb < /usr/share/postgresql/contrib/ltree.sql

	And you should be OK.
	Really this module is amazing. You can put a trigger on the table so  
that, for instance, the path is created automatically from the element  
name and the parent_id, that kind of things. I remember search was also  
really fast and you can use complex queries without CONNECT BY...