Values such as inventory and account balance, usually calculated from a snapshot table, require the use of semi-additive measures. This article describes how to implement these calculations in DAX according to your specific requirements.  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

This article shows how to compute a running total over a dimension, like for example the date.  Read more

This article describes how to write DAX measures that compute aggregations or comparisons with past dates without showing or comparing future dates.  Read more

DAX has many time intelligence functions that are often redundant, offering different shorter syntaxes for longer more generic functions. However, sometimes the shorter syntax could be dangerous, as I explain in this blog post where I suggest using CALCULATE and…  Read more

If you have a fiscal year starting in March, you can have a problem using the time intelligence functions in DAX. For example, by using February 28, the fiscal year starts on February 29th in leap years. By using February…  Read more

If you used the DATESYTD and TOTALYTD functions in DAX, you might have noticed that the optional parameter year_end_date is a string defining the last day of the year. The default is December 31, so this parameter is used only…  Read more

This article describes a reference Date table in DAX using a Power BI template. The same technique can be used in Analysis Services models. Download the latest version of the template in the Dax Date Template page.  Read more

This article introduces a technique to filter and productively compare two time periods with Power BI.  Read more

If you do not have a full month with data, comparisons such as year-over-year (YOY) might require particular filters in order to do a like for like comparison in DAX. This article describes how to write DAX expressions comparing equivalent…  Read more