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    Question

    ROW_NUMBER() OVER (PARTITION BY dept ORDER BY salary

    DESC) assigns:
    A Same rank to ties Correct Answer Incorrect Answer
    B Unique sequential rank within each dept Correct Answer Incorrect Answer
    C Percentile of salary Correct Answer Incorrect Answer
    D Total salary per dept Correct Answer Incorrect Answer
    E Running total Correct Answer Incorrect Answer

    Solution

    ROW_NUMBER gives unique numbers ordered within partitions.

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