What is the purpose of the ROW_NUMBER() function when used with ORDER BY in a query?

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Multiple Choice

What is the purpose of the ROW_NUMBER() function when used with ORDER BY in a query?

Explanation:
ROW_NUMBER() is a window function that numbers rows in a result set. With ORDER BY, the order you specify determines the sequence: the first row in that order gets 1, the next gets 2, and so on, giving every row a unique index. This is handy for pagination or for creating a simple row index, and you can reset the numbering per partition with PARTITION BY if you want numbering within groups. It does not aggregate values, filter top records, or create a running total. If two rows share the same ORDER BY value, ROW_NUMBER() still assigns distinct numbers, unlike some other ranking functions that handle ties differently.

ROW_NUMBER() is a window function that numbers rows in a result set. With ORDER BY, the order you specify determines the sequence: the first row in that order gets 1, the next gets 2, and so on, giving every row a unique index. This is handy for pagination or for creating a simple row index, and you can reset the numbering per partition with PARTITION BY if you want numbering within groups. It does not aggregate values, filter top records, or create a running total. If two rows share the same ORDER BY value, ROW_NUMBER() still assigns distinct numbers, unlike some other ranking functions that handle ties differently.

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