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单选题

Which statement is true regarding the COALESCE function?()

发布日期:2020-04-10

Which statement is true regarding the COALESCE fun...
A

It can have a maximum of five expressions in a list

B

It returns the highest NOT NULL value in the list for all rows

C

It requires that all expressions in the list must be of the same data type

D

It requires that at least one of the expressions in the list must have a NOT NULL value

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