Many thanks!!! Best Wishes, Peter
-----Original Message----- From: Barney Boisvert [mailto:[EMAIL PROTECTED] Sent: Wednesday, February 01, 2006 5:32 PM To: CF-Talk Subject: Re: SPAM-LOW: Re: Nested Set Model I wasn't criticizing your approach at all. Nine years ago I wasn't even aware there was something called SQL, let alone building applications with it. And it's only been in the past couple years that I discovered nested sets. As to your question about depth, here's the answer: SELECT t.id, t.name, ( SELECT COUNT(*) FROM myTable t2 WHERE left <= t.left AND right >= t.right ) AS depth FROM myTable t WHERE .... something or other ... As before, change the <= and >= to < and > to get the ancestor count rather than depth. cheers, barneyb On 2/1/06, Peter Bell <[EMAIL PROTECTED]> wrote: > Hi Barney, > > Agree wholeheartedly with performance comments re: my approach. Never > said it was good - I just didn't know about nested sets in '97!!! Am > looking to port to a nested set model based on your comments. > > Do you know any easy way to get the nest level for each record using a > nested set without additional queries? For example, a fully extended > sidebar navigation pulling from a nested set page table with a > different style for each indent level . . . > > Best Wishes, > Peter > -- Barney Boisvert [EMAIL PROTECTED] 360.319.6145 http://www.barneyb.com/ Got Gmail? I have 100 invites. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Message: http://www.houseoffusion.com/lists.cfm/link=i:4:231050 Archives: http://www.houseoffusion.com/cf_lists/threads.cfm/4 Subscription: http://www.houseoffusion.com/lists.cfm/link=s:4 Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4 Donations & Support: http://www.houseoffusion.com/tiny.cfm/54
