Can we do a CONTAINSROW() DAX function tutorial while implementing a coupon redemption fraud detection calculation? Yes! Can we add to this a discussion about how to calculate distinct counts on temp tables? You betcha! In fact, we can do it all in one video. The dataset is simple, we will take a look at … Continue reading CONTAINSROW() DAX Function Tutorial (is DAX CONTAINSROW() = WHEN EXISTS() in SQL?), Plus a Fraud Detection Calculation

There are many videos on YouTube already dedicated to this topic. So why am I doing another one? Well, the goal here is not to teach you Row Level Security. My goal is to help you understand how Row Level Security works. In this video I will discuss what makes row level security work in … Continue reading The Very Basics of Row Level Security (RLS – Power BI Tutorial)

HR Reporting is a sensitive topic where we often have to implement a variety of rules and constraints. Row Level Security is one of the options that we often use to implement those rules, but sometimes, the filtering behavior of RLS is not exactly what we want. In our scenario, imagine a situation where I … Continue reading HR Analysis – How to Mask Salaries (and a Parent/Child Hierarchy Power BI Tutorial)

We often need to compare our current week's sales with the average sales over the last 4, 8, 52 or even N weeks. In this tutorial I go over one of the possible approaches that will allow you to provide a drop-down choice for the user to select the time range to compare with the … Continue reading Last N Weeks Comparisons (DAX Tutorial) (Last 4 weeks, Last 8 weeks, …, Last N weeks)

I have tried to do this before one temp table function at a time, but I think I need to try something different In this video, we will go from the simplest table functions like ROW() to more sophisticated ones like GENERATE, SUMMARIZE, ADDCOLUMNS, NATURALINNERJOIN and a few others. I think that unless you go … Continue reading Comprehensive DAX Table Functions Tutorial (GENERATE, SUMMARIZE, ADDCOLUMNS, NATURALINNERJOIN and more… )

Ok, I have to admit, this is not a level 100 kind of stuff, things get a little complicated, but if you manage to sit through the entire thing, I think it will be worth your while. The problem is the following - we have a sales table tracking Sales Amount by Date, Product, and … Continue reading Top Performers Analysis + Generate() and TopN() Tutorial

A short while ago I did a video about how hard it was (or almost impossible) to build a good Income Statement in Power BI. Now that the Calculation Groups are here, the question is whether we have a better option than what I had to do before with a smart calculation. If you are … Continue reading Better Income Statement with Calculation Groups? (tutorial)

Slice and Dice experience on a table with multiple dates can be a little frustrating. If I have two date tables connected to my two date columns in the transaction table (so if I have a list of projects, Project Start Date and Project End Date), and if I create two filters at the same … Continue reading Improve Slice and Dice End User Experience for Tables with Multiple Dates (tutorial)

Let's say that you have a trend chart, and let's say that you would like to make it easier for a user to see where today's date is on that chart. If that sounds like a useful feature to have, then give this short video a listen and download all the materials here.   https://youtu.be/pqVbdhMe53U

Little known fact, I used to box, and boxed a lot… Unfortunately, it did little to help me with my public speaking as you will definitely be able to see from this video where I constantly say UNPIVOT instead of PIVOT. My apologies, hopefully, you will be able to enjoy the video anyway as the … Continue reading Power BI DAX Tutorial: How to PIVOT Data Using DAX (using RANK.EQ function)