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The _____ aggregation operation adds up all the values of the attribute

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The _____ aggregation operation adds up all the values of the attribute

(a) add

(b) avg

(c) max

(d) sum

I had been asked this question during an interview.

I'm obligated to ask this question of Aggregate Functions in chapter Introduction to Relational Model and Sql of RDBMS

1 Answer

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Best answer
Correct answer is (d) sum

Easy explanation: The sum aggregation operation adds up all the values of the specified attribute. There does not exist any aggregation such as add.

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