• 2022-06-09
    使用聚合函数可以实现对表中指定数据进行汇总统计,下列哪组函数全部是聚合函数()。
    A: COUN
    B: SU
    C: AV
    D: MAX
    E: I
    F: SU
    G: AV
    H: MAX
    I: I
    J: SU
    K: AV
    L: COUNT
    M: I
    N: SU
    O: COUN
    P: MIN
  • A

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      Lunch boxes have evolved along with the transformation of schools.  A: A B: B C: C D: D E: E F: F G: G H: H I: I J: J K: K L: L M: M N: N O: O P: P

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      The author was proud of using a lunch box in her childhood.  A: A B: B C: C D: D E: E F: F G: G H: H I: I J: J K: K L: L M: M N: N O: O P: P

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      Merian was the first scientist to study a type of American ant. A: A B: B C: C D: D E: E F: F G: G H: H I: I J: J K: K L: L M: M N: N O: O P: P

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      Most people do not have clear memories of past events. A: A B: B C: C D: D E: E F: F G: G H: H I: I J: J K: K L: L M: M N: N O: O P: P

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      Students should develop the key skills before they start a project. A: A B: B C: C D: D E: E F: F G: G H: H I: I J: J K: K L: L M: M N: N O: O P: P