Which statement is true about aggregate functions?
选项:
A:
A: The AVG function implicitly converts NULLS to zero.
B:
B: The MAX and MIN functions can be used on columns with character data types
C:
C: Aggregate functions can be used in any clause of a SELECT statement
D:
D: Aggregate functions can be nested to any number of levels
发布时间:2024-06-05 21:12:00