Data modelling and DAX
I came across an interesting request last week from someone who wanted to dynamically control columns shown in a Power BI table visual – based on the values within each table. There are lots of blogs showing different techniques on dynamic columns, but the requirement here was to base the decision on whether to show … Continue reading Dynamic Columns based on values
Introduction For this blog, I want to share an interesting approach that can potentially speed up slow reports that include a distinct count calculation. The approach described in this article explains how you can add a DIY version of an approximate distinct count calculation to a DAX based model. The method combines a little pre-processing … Continue reading DAX : Approx Distinct Count
The next chapter in this series on Creative Aggs looks at Filtered Aggs, what they are, and how you might use them to speed up reports connected to Power BI and SSAS models. The series so far : Introduction to Aggs Horizontal Aggs Mixing Agg and base table to produce a single value Accordion Aggs … Continue reading Creative Aggs Part IV : Filtered Aggs
Introduction to Aggs Horizontal Aggs Mixing Agg and base table to produce a single value Accordion Aggs (this article) Variable grain aggs in a single table for extra flexibility Filtered Aggs Using Composite Models to keep recent data in memory, and older data in the source to optimise the model size Incremental Aggs A smart … Continue reading Creative Aggs Part III : Accordion Aggs
