Question

    Aggregate function in SQL

    A An aggregate function in SQL performs a calculation on multiple values and returns a single value. Correct Answer Incorrect Answer
    B avg, count, sum, min, max are aggregate function Correct Answer Incorrect Answer
    C An aggregate function ignores NULL values when it performs the calculation, except for the count function Correct Answer Incorrect Answer
    D All three are correct Correct Answer Incorrect Answer
    E None Correct Answer Incorrect Answer

    Solution

    The correct answer is D

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