High Memory Usage and Calculated Columns
Scenario: A client reports a memory spike during processing. They have a Tabular semantic model deployed to Azure Analysis Services. They fully process the model daily. The model normally takes […]
Author Archive for: Prologika
Entries by Prologika - Teo Lachev
Gateway AD Lookups
A data gateway is required for a cloud service, such as Power BI, to access on-prem data, either for live connections or for refreshing imported data. The gateway picked up […]
Embedding Power BI Reports in JavaScript
A recent engagement brought an interesting dilemma. An ISV wanted to embed Power BI reports in a SharePoint Online portal accessible by their customers. The app handles user authentication and […]
MVP Again!
Got awarded for the elite Microsoft Most Valuable Professional (MVP) – Data Platform award again. I’ve been recognized by Microsoft for my expertise and contributions to the community for every year since […]
The Power BI Viewer Role
As I discussed in “Power BI Sharing is Getting Better” and “Power BI Sharing is Getting Better 2“, the Power BI sharing saga has been improving and Microsoft is closing […]
Why Is SQL Server Not Using My Index?
Scenario: A partitioned Tabular table generates SELECT statements that queries a massive range from the base table on a date column. The processing job is taking long time. The SELECT […]
Multi-level Column Unpivoting with Power Query
An interesting challenge today come up while mentoring finance users in Power BI. Consider the following Excel layout. The user wants to unpivot the data by rotating the three header rows […]
Prologika Newsletter Summer 2019
After learning how to model the data properly (the most important skill), DAX would be the next hurdle in your self-service or organizational BI journey. You won’t get far in […]
Power BI Sharing is Getting Better 2
We had to wait four years but here they are: Power BI shared datasets are here. This makes it a good time to revisit the remaining Power BI sharing limitations, which […]
Power BI Palooza
May was a hectic month but June is even busier… I’m presenting and sponsoring the tomorrow’s Power BI Group meeting and teaching a class on Tue and Wed. Then, on […]
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Prologika is a boutique consulting firm that specializes in Business Intelligence consulting and training. Our mission is to help organizations make sense of data by applying effectively BI technologies.
