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
正确答案:C
答案解析:有
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