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MongoDB MCQs

Which statement of the followings could NOT drop an index?

db.runCommand({dropIndexes:'foo', index : '*'})

db.collection.dropIndex({x: 1, y: -1})

db.runCommand({dropIndexes:'foo', index : {y:1}})

db.myCollection.reIndex()

db.collection.dropIndexes();

Answer

Correct Answer: db.myCollection.reIndex()

Explanation:

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