Karan Gulati (SSAS Maestro)

The following example adds roll-up rows to the Group-By columns of the SUMMARIZE function call.

EVALUATE SUMMARIZE( ‘Internet Sales’,
ROLLUP (‘Date'[Calendar Year],Product[Product Category Name]),
“Sales”, ([Internet Total Sales]),
“Tax”,([Internet Total Tax Amount]))

Red Box shows the sub-total of Categories further Brown Box shows Total of all Categories across all years.