Menambahkan row sebelum pergantian data dari GROUP BY.
Dengan mensummarize aggregate function yang ada.
-----start-----
SELECT
SOP_Number,
Item_Number,
GROUPING(Item_Number) source,
sum(Extended_Price)[Extended Price],
count(Extended_Price)[Count]
from Sample_With_RollUp
GROUP BY SOP_Number,Item_Number
WITH ROLLUP
-----end-----
