Antriksh Sharma

DAX has an interesting function named NONVISUAL, which marks a Filter in SUMMARIZECOLUMNS to impact only the grouping columns and not affect the measures. We have model where there are Years in the Dates[Year] from 2020 - 2026 but the Sales only occured for 2021 - 2025, so when a user writes a DAX Query like the following one it returns 5. DEFINE MEASURE Sales[#Years in Dates] = COUNTROWS ( ALLSELECTED ( Dates[Year] ) ) EVALUATE SUMMARIZECOLUMNS ( ProductCategory[Category],...

In this blog let's take a look at how to use DAX's UDF in a DAX Query that mixes TABLE, COLUMN, MEASURE, and FUNCTION keywords. We start with a UDF that returns Dates[Year] by the position that we pass, the focus is primarily on First and Last values when there are Years in Dates table that do not have a row in Sales table. Following UDF code returns First and Last Years: DEFINE FUNCTION FxGetValueByPosition = ( N: INT64 VAL, OrderByCol: ANYREF EXPR, SortOrder: ANYREF EXPR ) => INDEX ( N,...

Let's say you want Top 2 Colors of each Brand, how would you do that? Here are different ways of computing that. Using INDEX & UNION DEFINE VAR Temp = ADDCOLUMNS ( ALL ( Products[Brand], Products[Color] ), "@Sales", [Sales Amount] ) VAR Uno = INDEX ( 1, Temp, ORDERBY ( [@Sales], DESC ), PARTITIONBY ( Products[Brand] ) ) VAR Dos = INDEX ( 2, Temp, ORDERBY ( [@Sales], DESC ), PARTITIONBY ( Products[Brand] ) ) EVALUATE UNION ( Uno, Dos ) ORDER BY...