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OLAP Interview Question:
Select item name, color, clothes size, sum(quantity)
from sales group by rollup(item name, color, clothes size);
How many grouping is possible in this rollup?
a) 8
b) 4
c) 2
d) 1
Submitted by: Administratorb) 4
Explanation:
{ (item name, color, clothes size), (item name, color), (item name), () }.
Submitted by:
Explanation:
{ (item name, color, clothes size), (item name, color), (item name), () }.
Submitted by:
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