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Not the answer you're looking for? I am trying to create another table from the variable B table that will have 3 columns. Step 1: Make a new file in Power BI Desktop. Name: The name given to the column, enclosed in double quotes. VAR A = TOPN: Returns the top N rows of the specified table. Read more, DAX creates a blank row to guarantee that results are accurate even if a regular relationship is invalid. Lets have a look at the formulas Ive used for each individual measure. Re: Tableau expression into DAX - Microsoft Power BI Community This code generates the DAX error, "Cannot find table Top3Products". As a data modeler, your DAX expressions will refer to model columns and measures. as of now TABLE/COLUMN are only available for querying the model and not for enriching the model. Applies the result of a table expression as filters to columns from an unrelated table. CALCULATE is the business - thanks! ADDCOLUMNS ( Aggregation functions - These functions calculate a (scalar) value such as count, sum, average, minimum, or maximum for all rows in a column or table as defined by the expression. You can see that at the top of the table is William Andrews. Variance, [Forecast Variance], VAR B = This will only retain those customers that have purchased over 2000. Returns a one-column table that contains the distinct values from the specified table or column. Its really a technique that you can hopefully implement in various ways. DAX - Reference Columns in a Virtual Table - Stack Overflow DAX gets confusing at times since some functions like clauclate we have to work from outer function to inner fucntion and others from inner to oueter (as I understand). The CALCULATE function enables you to do a similar thing with our previous SUMX scenario. Performs an inner join of a table with another table. For this tutorial, Ive already covered the sales, profits, and margins. How and why to Create VIRTUAL TABLES in DAX Formulas Were you trying to add a column to JointTable? I realised I have a lot more to learn/understand on using DAX. Modifies SUMMARIZECOLUMNS by omitting specific expressions from the BLANK/NULL evaluation. It's recommended you never qualify your measure references. I'm making an assumption that youare really interested in SeatNum and Booked Customer from your screenshot below. The reasons are provided in the Recommendations section. These functions return a table or manipulate existing tables. Margins are also very important. But you can make it dynamic and you can self-generate it. In this example I'm going to show you the power of DAX, specifically how you can use in-memory virtual tables. I assumed you want to calculate new customers. Filter functions - These functions help you return specific data types, look up values in related tables, and filter by related values. Thus, a variable name cannot be used as a table name in a column reference. This way, you can gauge if a customer has been good or bad based on this one factor, instead of factoring in three to ten variables. Happy Friday!The sample file is available for download here: . The way you have summarized the virtual table and the corresponding result is something I believe can be used to complete the scenario i am trying to solve.