I think I need to read more on the MVs. Right now I'm very unclear how can they add something to a prebuild table. I thought they could replace an aggregate.
Thanks for the advice, everyone (Paula, Beth, Dennis, Darrel, hope I didn't miss anyone). I might revive this thread when I get some more knoledge about MVs. Gene --- Jonathan Lewis <[EMAIL PROTECTED]> wrote: > > One of the options for materialized views > is to 'create MV on prebuilt table' > > If you want to use the table for direct queries, > then you can - if you enable query rewrite then > suitable queries against the base tables can > be rewritten to take advantage of the MV. > > It's a technique I've advised clients to use > when materialized views first appeared and > they already had a big investment in code to > create aggregate tables. Prebuilt tables > are also my favourite option for MVs - you > don't get the awful unpredictable that can > appear with dynamic refreshes. > > > Regards > > Jonathan Lewis > http://www.jlcomp.demon.co.uk > > Now available One-day tutorials: > Cost Based Optimisation > Trouble-shooting and Tuning > Indexing Strategies > > (see http://www.jlcomp.demon.co.uk/tutorial.html ) > > ____UK_______April 8th > ____UK_______April 22nd > > ____Denmark May 21-23rd > > ____USA_(FL)_May 2nd > > > Next dates for the 3-day seminar: > (see http://www.jlcomp.demon.co.uk/seminar.html ) > > ____UK_(Manchester)_May > ____USA_(CA, TX)_August > > > The Co-operative Oracle Users' FAQ > http://www.jlcomp.demon.co.uk/faq/ind_faq.html > > > ----- Original Message ----- > To: "Multiple recipients of list ORACLE-L" > <[EMAIL PROTECTED]> > Sent: 20 March 2003 22:09 > > > > Paula, > > > > I'm not sure what would an MV on top of an > aggregate > > give me. I mean, I have a base table and I need to > > aggregate. I can see doing it via an aggregate > table > > or (as someone suggested) via an MV. But you are > > suggesting both. What benefit do you see from > that? > > What am I missing? > > > > > -- > Please see the official ORACLE-L FAQ: > http://www.orafaq.net > -- > Author: Jonathan Lewis > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 > http://www.fatcity.com > San Diego, California -- Mailing list and web > hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an > E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of > 'ListGuru') and in > the message BODY, include a line containing: UNSUB > ORACLE-L > (or the name of mailing list you want to be removed > from). You may > also send the HELP command for other information > (like subscribing). > __________________________________________________ Do you Yahoo!? Yahoo! Platinum - Watch CBS' NCAA March Madness, live on your desktop! http://platinum.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Gurelei INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
