The first article in this series looked at to use the RANKX function in a calculated column to apply ranking to your data. This article will show how you can use the RANKX function in a calculated measure. The PBIX file used for this article can be downloaded here. I will use the same 10-row data-set and Read more about How to use RANKX in DAX (Part 2 of 3 – Calculated Measures)[…]
How to use RANKX in DAX (Part 2 of 3 – Calculated Measures) When I first started to play with DAX, one of the functions that seemed to confuse me more than it should, was how to add ranking to my data. It didn’t seem to matter what the data was, if I followed the Read more about How to use RANKX in DAX (Part 1 of 3 – Calculated Columns)[…]
Thanks to all attendees of my Power BI webinar last Friday. I hope you all enjoyed it. I explained a number of the most common row level security patterns in Power BI with some DAX expressions, in this post you will find the description of webinar, recording, and link to all demos and materials. Although Read more about Unleash Security Patterns in Power BI; Webinar Recording and Materials[…]
A recent post on a community.powerbi.com forum asked if it was possible to show a slicer of months, and configure a report so when a user selects a single month from the slicer, visuals will show data for a date range relative to that selection e.g. the preceding 10 months of data. If a user Read more about Dynamic Date Range from Slicer[…]
This blog will show a technique that can be applied to certain charts allow banding or stripes to help highlight data. This could be horizontal bands to help show data above or below a certain threshold, or this could be vertical bands to help highlight ranges of data by time. In both cases, using What-If Read more about Power BI – Banding and stripes in charts[…]
I’m excited to share the news with you that we have added a new feature in Power BI Helper; Expression Tree. Expression Tree will expand the tree of expression for a Measure or calculated column, you can see what other measures are used to create this expression, and where other measures, calculated columns, or even Read more about Expression Dependency Tree: New Feature of Power BI Helper[…]
Despite all articles, blog posts, and videos on the topic of DAX Measures and Calculated columns, I still hear here and there that people ask what is the difference between Measure and Calculated Column? What situation should we use each of these? and on the other hand, what is the difference of creating column here, Read more about Measure vs Calculated Column: The Mysterious Question? Not![…]
Power BI is a cloud service, and that means Power BI files are hosted somewhere. Some DAX functions such as Date/Time functions work on system date/time on the server their file is hosted on. So If you use DAX functions such as TODAY() or NOW() you will not get your local date/time, You will fetch Read more about Solving DAX Time Zone Issue in Power BI[…]
DAX has many functions to write conditional expressions. For example you might want to calculate sum of sales amount for all “Red” products. you can achieve it by using SUMX or Calculate, and functions such as IF or Filter to write a conditional expression for product color to be equal to “Red”. At the first Read more about IF and Filter are Different! Be Careful (DAX)[…]
What is the main difference between M and DAX? Why we can do a calculated column in two different places? What are pros and cons of each? Which one should I use for creating a profit column? Why I cannot do all of it in only one; DAX or M! Why two different languages?! Why Read more about M or DAX? That is the Question![…]