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Although this technique is useful during project development, it is a bad habit in production because each intermediate calculation is stored in RAM and wastes precious space. [Month] & " - " & 'Table'[Date]. Tutorial: Create your own measures in Power BI Desktop As a beginner i am very glad with your prompt response and solution! This tutorial will guide you through understanding measures and creating your own basic measures in Power BI Desktop. This article describes the possible rounding differences that can appear in DAX. Create a calculated column with values from related tables Use your new column in a report Create a calculated column that uses an IF function What you've learned Next steps Sometimes the data you're analyzing doesn't contain a particular field that you need to get your desired results. Use quick measures for common and powerful calculations - Power BI Solved: Power BI DAX measure returns duplicates after sele This convention makes it easier to differentiate between measures and columns in code. However, in articles and books we always use the := assignment operator for measures. If you want to avoid a multiple selection, you could use the ERROR function, so the visual displays a proper error message (even if the reference to MdxScript seems like nonsense in a DAX client such as Power BI Desktop). You might want to click Focus Mode to enlarge the values, as I have. A measure operates on aggregations of data defined by the current context, which depends on the filter applied in the report such as slicer, rows, and columns selection in a pivot table, or axes and filters applied to a chart. Changes the CALCULATE and CALCULATETABLE function filtering semantics. This means that we need to add it physically to your data table. (The data you provided, create blank query in PowerBI and copy paste), You need to solve the sorting problem, but this works . Internally, SELECTEDVALUE is just syntax sugar generating the following corresponding syntaxes: You should use SELECTEDVALUE in all those cases when you need to read a single value selected in the filter context, obtaining blank or another default value in all other cases. DAX even has many of the same functions as Excel, such like DATE, SUM, and LEFT. We'll consider adding them to the quick measures list in a future release. Appreciate your Kudos. For this calculation, Jan will create a measure. Its library provides immense flexibility in creating measures to calculate results for just about any data analysis need.