Question

In which scenario would you use the ROLLUP operator for expression or columns within a GROUP BY clause?

a.

To find the groups forming the subtotal in a row

b.

To create group-wise grand totals for the groups specified within a GROUP BY clause

c.

To create a grouping for expressions or columns specified within a GROUP BY clause in one direction, from right to left for calculating the subtotals

d.

To create a grouping for expressions or columns specified within a GROUP BY clause in all possible directions, which is cross-tabular report for calculating the subtotals

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Answer: (c).To create a grouping for expressions or columns specified within a GROUP BY clause in one direction, from right to left for calculating the subtotals

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Q. In which scenario would you use the ROLLUP operator for expression or columns within a GROUP BY clause?

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