About the Series …
This is the eleventh tutorial article of the series, MDX
in Analysis Services. The series is designed to provide hands-on
application of the fundamentals of MDX from the perspective of MS SQL Server
2000 Analysis Services ("Analysis Services,");
our primary focus is the manipulation of multidimensional data sources, using
MDX expressions, in a variety of scenarios designed to meet real-world business
information on the series, as well as the hardware / software requirements to
prepare for the tutorials we will undertake, please see the first lesson of
this series: MDX
Concepts and Navigation.
Note: At the time of writing, Service
Pack 3 updates
are assumed for MSSQL Server 2000, MSSQL Server 2000 Analysis
Services, and the related Books Online and Samples.
The screen shots that appear in this article were taken from a Windows 2003
Server, and may appear somewhat different from coinciding views in other
In our last tutorial, Control
Location of Processing, we began a three-part mini-series, Optimizing MDX. We stated
that the objective of this "triptych" is to explore methods for
optimizing the performance we obtain from our MDX queries. We introduced types
of intervention, or classifications of approaches, that we can
take, to enhance the performance of MDX, with the intent being to cover several
of the types as we progress through the mini-series, while introducing practice
examples to reinforce an awareness that transfers to our daily work with MDX.
In the first lesson of the Optimizing MDX set, we introduced the
first intervention type, control of location of query execution.
We focused on two of
the main ways to effect control of location, the Large Level Threshold
property and the Execution Location parameter, and performed hands-on
practice with the settings involved with each. In this lesson, we will pick up
where we left off, and:
our considerations of the types of intervention we can use to optimize MDX
optimization of set operations and syntax arrangement considerations.