I recently had an issue in Power BI Desktop that started to display the error message “Uncertified Connectors”. What was really strange is that Power BI was not trusting… Power BI itself! I am not sure whether this started after…  Read more

This article shows why building custom Date tables is preferable to using the automatic date/time handling capabilities of Power BI.  Read more

This article describes how to correctly use column references when manipulating tables assigned to DAX variables, avoiding syntax errors and making the code easier to read and maintain.  Read more

This article shows how to build a basic date table using a calculated table and DAX.  Read more

This article shows how to compute a measure that sums the values produced row by row in the visual into the visual total, instead of recomputing the total value in the filter context of the total.  Read more

Aggregations have been introduced in 2018 in Power BI, as an optimization technique to manage large tables. By providing pre-aggregated tables, you can highly improve the performance of a Tabular data model. In this session we introduce the concept of…  Watch now

SQLBI is now offering a new Data Modeling video course: Introduction to Data Modeling for Power BI. This article describes which users will benefit from this learning experience the most, and how to enroll in the course.  Read more

I was recently reading an interesting question by a user. Given a date/time value and a number of hours, add the number of hours to the date, but considering some constraints related to working hours: The working hours are 09:00-17:00…  Read more

The introduction of the weak relationships in Power BI composite models enables new data modeling techniques. However, not all of the many-to-many relationships can be managed by using weak relationship. The “classical” many-to-many relationships in data warehouse is a design…  Watch now

Relationships are the foundation of any Power BI or Analysis Services Tabular data model with multiple entities. At first sight, this is a trivial concept, especially if one has a knowledge of relational data modeling. However, the ability to create…  Watch now