When N is the number of grouped columns,the result of a CUBE operation can be produced by using (2*N)- 1 additional SELECT statements connected by a UNION operator.

Name: When N is the number of grouped columns,the result of a CUBE operation can be produced by using (2*N)- 1 additional SELECT statements connected by a UNION operator.
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The result of a CUBE operation on N grouped columns can be produced by using 2^N additional SELECT statements connected by a UNION operator, not (2*N) - 1.

When N Is the Number of Grouped Columns,the Result of a CUBE