The Blog from the DBA Classroom

By: Joel Goodman

Interested in Star Transformation Queries??

Posted by Joel Goodman on 15/01/2009

Oracle Data Warehouses often perform complex n-way joins with aggregating functions such as SUM , COUNT and AVG. Star Transformation is a type of rewrite technique for optimising such queries and exploits the power of bitmap indexes. To learn more about this feature please read the article I wrote for the Oracle University EMEA Newsletter.

>> Your Transformation is in the Stars


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