>>>>> "Martin" == Martin Smetak <[EMAIL PROTECTED]> writes:
Martin> Hi all! Anyone know if it's possible to make a recursive
Martin> select from a table ? My problem: I got a table of "some
Martin> categories" which all points to its parrent
Martin> one(tree)...shown below. And I want to select all names of
Martin> parrent categories of one child, lets say "fast[4]". Now
Martin> I'm solving that with many SQL queries like : "SELECT
Martin> main_id FROM cat WHERE id=4;"....but I would like to
Martin> optimize this.
Martin> Anyone can help or point me to a way ??
The Openacs project has implemented a couple of different methods for
handling tree queries. Check out these two threads:
http://openacs.org/bboard/q-and-a-fetch-msg.tcl?msg_id=0000eC&topic_id=11&topic=OpenACS
http://openacs.org/bboard/q-and-a-fetch-msg.tcl?msg_id=0000j6&topic_id=12&topic=OpenACS%204%2e0%20Design
Regards,
Dan Wickstrom
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