What's New

Remove Parent Aggregation

By - Mar 03, 2015

SSAS cubes are great at aggregating values. However, there are many times when we really wouldn’t want an aggregation to occur, such as with pricing data, or when dealing with percentage numbers. In order to augment the behavior of SSAS, one will need to write MDX rules to NULL out these aggregations.

Here is an example MDX script that shows how to NULL out unwanted aggregations in a cube. Notice that the dimensions that we do not want to aggregate by is tested with an ISLEAF function.

Applying these scripts can lead to more understandable reports. However, please be cautious when using this type of calculation as fighting against the nature of SSAS cube behavior (i.e. causing the SSAS engine to not aggregate) will cause negative performance impact on queries.


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