MongoDB TutorialLesson 8Free preview

MongoDB Update

This lesson is part of MongoDB · All levels

Summary

This lesson explains document updates using updateOne() and updateMany(). Updates typically use the $set operator to change a particular field without touching another field, and the modifiedCount reports how many documents have changed. The findOneAndUpdate() method can even restore documents once they have been updated.

Key points

UpdateOne() updated one document; updateMany() updated all that fit
The $set operator changes the value of a particular field without deleting another field
The results of the update contain matchedCount and modifiedCount
FindOneAndUpdate can restore the updated document

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