in reply to Tree Structure and Db

This probably won't help you, but...

If you happen to be using Oracle or DB2, those databases have SQL extensions to do tree structured queries, based on a table like you describe.

The syntaxes are radically different, so your best bet is to look it up in your database documentation. For Oracle the keyword is "CONNECT BY", and for DB2 the keyword is "WITH".

Here's a nice overview: http://www.oreilly.com/catalog/sqlpr/chapter/ch01.pdf

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Re^2: Tree Structure and Db
by hartwig (Sexton) on Jul 07, 2005 at 11:21 UTC
    CONNECT BY is not working very well in oracle 9.2 - in oracle 8.X its OK. This is a bug in oracle 9.2 (also admited by oracle ;)) -
    What kind of DB are you using?
    Best regards
    Hartwig
[reply]
      I use MySQL 4.x
[reply]

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