Q.

Point out the wrong statement.

A. rank() returns the rank of each row in the result set of partitioned column
B. dense_rank() is same as rank() function. only difference is returns rank without gaps
C. ntile() distributes the columns in an ordered partition into a specified number of groups
D. row_number() returns the serial number of the row order by specified column
Answer» C. ntile() distributes the columns in an ordered partition into a specified number of groups
Explanation: ntile divides the partitioned result set into specified number of groups in an order.
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