Joe Celko's "SQL for Smarties" has an entire chapter on this, and later on he wrote an entire book on the subject. Since your post is simplified and the questions you likely really want answered are more complex, I'd strongly encourage you to research Joe's books.
Here's an excerpt: http://www.onlamp.com/pub/a/onlamp/2004/08/05/hierarchical_sql.html -- Ted Roche Ted Roche & Associates, LLC http://www.tedroche.com _______________________________________________ Post Messages to: [email protected] Subscription Maintenance: http://leafe.com/mailman/listinfo/profox OT-free version of this list: http://leafe.com/mailman/listinfo/profoxtech Searchable Archive: http://leafe.com/archives/search/profox This message: http://leafe.com/archives/byMID/profox/[EMAIL PROTECTED] ** All postings, unless explicitly stated otherwise, are the opinions of the author, and do not constitute legal or medical advice. This statement is added to the messages for those lawyers who are too stupid to see the obvious.
