When N is the number of grouped columns,the result of a ROLLUP operation can be produced by using N)additional SELECT statements connected by a UNION operator.

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This statement is true. The ROLLUP operation in SQL is used to calculate summary statistics for a group of columns. To produce the result of a ROLLUP operation, additional SELECT statements are used, and these statements are connected by the UNION operator. The number of additional SELECT statements needed is equal to the number of grouped columns in the original query.

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