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________ returns true if the input sets have the same distinct elements.

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________ returns true if the input sets have the same distinct elements.

(a) $setUnion

(b) $setDifference

(c) $setEquals

(d) None of the mentioned

I had been asked this question in semester exam.

Origin of the question is Pipeline Optimization topic in section Aggregation Concepts and Aggregation Mechanics of MongoDB

1 Answer

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Best answer
The correct answer is (c) $setEquals

Explanation: $setEquals accepts two or more argument expressions.

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