DAX:SUMMARIZECOLUMNS Advanced

This article describes the advanced usage of SUMMARIZECOLUMNS, including IGNORE, ROLLUPADDISSUBTOTAL, ROLLUPGROUP and NONVISUAL

mentioned above

It is recommended that before reading this article, you have read "DAX: Basic Principles and Usage of SUMMARIZECOLUMNS" or have mastered the basic usage of SUMMARIZECOLUMNS, because this article will not include this part. SUMMARIZECOLUMNS has built-in functions IGNORE, ROLLUPADDISSUBTOTAL, ROLLUPGROUP and NONVISUAL. These functions are not expanded with examples in the documentation and DAX.GUIDE , making it difficult for many readers to understand their specific usage. This article will expand on them through simple examples and concise language. , try to make it "clear" to readers as much as possible.

IGNORE

The SUMMARIZECOLUMNS function itself filters out rows where all measure values ​​are empty, while the IGNORE function allows it to ignore null values ​​for measures. as follows:

SUMMARIZECOL = 
SUMMARIZECOLUMNS (
    'DimProductCategory'[ProductCategoryName],
    'DimDate'[FiscalMonth],
    "SALES", SUM ( 'FactSales'[SalesQuantity] )
)

return:

If using IGNORE:

SUMMARIZECOL_IGNORE = 
SUMMARIZECOLUMNS (
    'DimProductCategory'[ProductCategoryName],
    'DimDate'[FiscalMonth],
    "SALES", IGNORE(SUM ( 'FactSales'[SalesQuantity] ))
)

The returned results contain rows with empty metric values: