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Author: Prologika - Teo Lachev

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Predict This!

My wife bought a pack of replacement water filters from Amazon. It was tagged as "Amazon's choice". The product listing showed the manufacturer name and it had a nice product photo advertising genuine filters. Except that there were all fake, which we discovered quickly by the output water pressure. The water coming out of a filter should have lower pressure while there was no difference…

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Atlanta MS BI and Power BI Group Meeting on November 4th

MS BI fans, join us for the next Atlanta MS BI and Power BI Group meeting on November 4, Monday, at 6:30 PM at the Microsoft office in Alpharetta. Andy Lawrence will share best practices for impactful Power BI Dashboards. CCG Analytics will sponsor the meeting. For more details, visit our group page and don't forget to RSVP (fill in the RSVP survey if you're planning to attend). Presentation: Best Practices…

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Securing Power BI Report Pages

Every now and then I get a question about how to secure Power BI report pages. A business analyst has created a multi-page report that requires limited access to some sensitive information in one or more report pages. I always cringe at this idea and recommend securing the data instead. That's because report-level or dashboard-level security can be easily compromised. For example, if the user…

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Filtering Power BI Visuals by Measure

Power BI lets you filter the visual data by a measure, such as by a measure that dynamically calculates the customer's rank. This is convenient but there are performance implications related to the way Power BI autogenerates the DAX query. If a visual has a visual-level filter on a measure, Power BI Desktop defines a variable table filter that includes all measures in the visual.…

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Staying Cool

A discussion overheard between two attendees at SQLSaturday yesterday: What is this Tabular thing? Like a cube but better. How's it better? It's in memory. I wonder if it can improve the performance of my report… It should, it's also in the Cloud. Note to myself. Use "in memory" and "cloud" more often.

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Presenting at SQL Saturday Atlanta (BI Edition)

SQL Saturday Atlanta (BI Edition) will be held on October 19th. I'll present a "Power BI Pro, or Premium: that is the question" strategy-oriented session at 12:30. One question that always pops us during my Power BI assessments for companies planning to adopt Power BI is which SKU to buy. The choice might seem obvious to your organization, but there is much more below the…

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Atlanta MS BI and Power BI Group Meeting on October 7th

MS BI fans, join us for the next Atlanta MS BI and Power BI Group meeting on October 7, Monday, at 6:30 PM at the Microsoft office in Alpharetta. Qubole will show us how Presto, Azure Data Lake, and Power BI can be used to analyze Big Data. Qubole will sponsor the meeting. For more details, visit our group page and don't forget to RSVP (fill in the RSVP survey if…

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Prologika Newsletter Fall 2019

We all need to share. But until a couple of months ago, a Power BI training or assessment wouldn't be complete unless I got hammered on the Power BI sharing limitations. Fortunately, Microsoft has addressed most of these and I have now a much better story to tell. And this is the subject of this newsletter. Quo vadis, Power BI Sharing? Power BI sharing road…

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Atlanta MS BI and Power BI Group Meeting on September 10th

MS BI fans, join us for the next Atlanta MS BI and Power BI Group meeting on September 10, Tuesday, at 6:30 PM at the Microsoft office in Alpharetta. This is a meeting not to miss. A DAX founder, Jeffrey Wang (Principal Software Engineer Manager at the Power BI product group) is coming all the way from Seattle to share DAX best practices with our group! Captech Consulting…

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Implementing Asymmetric Crosstab in Power BI

A recent requirement called for an asymmetric crosstab report in Power BI. Transitioned to Adventure Works, the final report looks like this. The Internet column shows the sales amount from FactInternetSales. Then, the matrix pivots on the BusinessType column in the FactResellerSales. Because, Internet sales don't relate to BusinessType, it doesn't make sense to pivot it. Instead, we want to show Internet sales in a…

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