Which statement is true regarding the COALESCE function?（）<br>A:It can have a maximum of five expressions in a list <br>B:It returns the highest NOT NULL value in the list for all rows <br>C:It requires that all expressions in the list must be of the same data type <br>D:It requires that at least one of the expressions in the list must have a NOT NULL value

Which statement is true regarding the COALESCE function?（）
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

出自：Oracle认证

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