Re: Help optimizing query/index
The only plausible way to speed up grouping by columns across two tables is to put those two columns in one table.
Many OLAP impleentations maintain the reporting tables in real time (or close to it eg doing much of the processing in off-peak hours), the obvious purpose being what you cite, that it would otherwise take too long to assemble the fact table.
Subject
Written By
Posted
Re: Help optimizing query/index
March 08, 2012 02:53PM
Sorry, you can't reply to this topic. It has been closed.
Content reproduced on this site is the property of the respective copyright holders.
It is not reviewed in advance by Oracle and does not necessarily represent the opinion
of Oracle or any other party.