From: "Jochem van Dieten" <[EMAIL PROTECTED]> > > After adding a column for "one level up", adding indexes, optimizing the > > query it took only a few hundreds of seconds. > > Maybe I misunderstand the problem, but I get the impression you have > the category computers>internet>providers>adsl and you want to count > everything in computers>internet>providers. Isn't that just a BETWEEN > 'computers>internet>providers' AND 'computers>internet>providers>z' > which a B+tree is supposed to handle just fine?
If I remember it well we had to do something like: computers>internet>providers adsl (20) cable (31) dial-up (107) hosting (12) So it was not simply a computers>internet>providers>adsl% , but computers>internet>providers>adsl without computers>internet>providers>adsl>% > > I really don't know how much hardware you would like to use to get these > > results? > > For DMOZ data I don't want hardware, I want GiST indexes: > http://www.sai.msu.su/~megera/postgres/gist/ltree/ OpenLDAP could also work well I guess ;-) Anyhow, the point I was trying to make was that it isn't just a question of adding more hardware to get performance. More often than not a few modifications will make a query pretty fast. Yes, the query optimizer could be improved, but for a fast and reasonably light DMS MySQL isn't bad at all! Regards, Jigal. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
