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多项选择题 Examine the description of the STUDENTS table: Which two aggregate functions are valid on the START_DATE column?（）

A、SUM(start_date)

B、AVG(start_date)

C、COUNT(start_date)

D、AVG(start_date, end_date)

E、MIN(start_date)

F、MAXIMUM(start_date)

  • C,E

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