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MongoDB Update Operators

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MongoDB Update Operators

There are many update operators that can be used during document updates.

Fields

The following operators can be used to update fields:

$currentDate: Sets the field value to the current date
$inc: Increments the field value
$rename: Renames the field
$set: Sets the value of a field
$unset: Removes the field from the document

Array

The following operators assist with updating arrays.

$addToSet: Adds distinct elements to an array
$pop: Removes the first or last element of an array
$pull: Removes all elements from an array that match the query
$push: Adds an element to an array

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