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84 search results for: DAX


DAX Variance Calculations

Variance calculations are a common BI requirement but good reference material is lacking. How do we create them in DAX? Let’s say you need to calculate the variance between this month sales and the previous month sales. DAX date functions require a Date table. They won’t work if you don’t have a separate Date table. […]


Power View Connectivity to Multidimensional (DAXMD) Released

Microsoft released Cumulative Update 4 for SQL Server 2012 Service Pack 1. This is more than a regular cumulative update as it includes enhancements to both Power View and Analysis Services to support connecting Power View to OLAP cubes, also known as DAXMD. For more information, read the official announcement by the Analysis Services product group. […]


DAXMD Goes Public!

Microsoft announced yesterday the availability of the Community Technology Preview (CTP) of Microsoft SQL Server 2012 With Power View for Multidimensional Models (aka DAXMD). As a participant of the CTP program and I’m very excited about this enhancement. Now customers can leverage their investment in OLAP and empower business users to author Power View ad-hoc […]


Understanding Dates in Power BI Quick Measures

As I explained here, Power BI introduced the highly anticipated Quick Measures feature to avoid writing DAX formula for common measures. The feature is still in preview, so make sure you enable it in Power BI Desktop from File, Options and Settings, Options, Preview Features. Many quick measures, such as time intelligence calculations (YTD, QTD, […]


Prologika Newsletter Fall 2017

Business Performance Management   As I’m writing this newsletter, Florida and Georgia (I live in Atlanta, GA) are in the midst of planning for hurricane Irma, which is expected to be one of the most powerful Atlantic Ocean hurricanes in recorded history. I hope that this won’t be the case and we don’t have to […]


Power BI What-if Analysis

Veteran Excel users might have used the Excel What-if feature that let you try several different sets of values in one or more formulas to explore various outcomes (scenarios). The August release of Power BI Desktop introduces a similar feature. You start by defining a What If parameter from the Modeling tab. Don’t confuse the […]


Considerations for Detail Reports

Nobody likes watching a report spinny. Interactive detail reports that perform well from an Analysis Services semantic layer have been the bane of my BI career. A “detail report” is a report that requests data at a lower level, e.g. policy in the insurance business, customer in Sales, etc. A detail report typically has many […]


Power BI vs. Qlik

After Tableau and SiSense, Keeping ’em Honest continues with Qlik. Now, after they sold the company and took a hit in the latest Gartner’s quadrant, I didn’t expect much of a completion from Qlik but every now and then I run into a customer considering Qlik and willing to share Qlik’s feedback on how Qlik […]


Power BI Report Measures Over Tabular Models

The May release of Power BI Desktop adds the ability to define DAX calculated measures when Power BI Desktop is connected live to a Tabular model or Power BI datasets. This is conceptually similar to defining MDX calculated members in Excel connected to a cube. The measure definitions are local to the Power BI Desktop […]


Power BI Quick Measures

One of the most common complaints raised by Power BI customers is the DAX steep learning curve. The April release of Power BI Desktop introduces a feature called Quick Measures. Currently in preview (make sure to enable Quick Measures from File ð Options and settings ð Options, Preview features), Quick Measures are supposed to replace […]