From the course: Complete Guide to Power BI for Data Analysts by Microsoft Press

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Create basic DAX expressions

Create basic DAX expressions - Power BI Tutorial

From the course: Complete Guide to Power BI for Data Analysts by Microsoft Press

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Create basic DAX expressions

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- [Tutor] So, let's just first discuss calculated columns. So as we saw in the previous sub lesson, we went through and built a new column called Full Name and its values were calculated on a row by row basis to create a physical column. When we do that, we build something that takes up space in the data model. So we just need to consider that. And its value is calculated data load time. So as you're refreshing your data model and we're pulling data from sources, running it through Power Query and ultimately landing at the data model, that work happens at load time. Which is generally an off peak time in most organizations. Typically calculated columns reside in dimension tables to be used as labels on reports and or slicers. And often they can be pushed back into the Power Query engine. So for example, back in an earlier sub lesson, we actually built this column back in Power Query. We took the unit price and the order quantity from our sales table and created a brand new column…

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