MongoDB Update Operators

MongoDB update operators are a set of special operators used to modify and process specified fields when updating documents. They can be used to add, remove, or modify specified fields when updating documents. This page summarizes the update operators available in MongoDB.

$addToSet

The Mongodb $addToSet operator is used to add elements to an array field in a Mongodb document, but only if the element does not already exist in the array.
$currentDate

The $currentDate operator can set a date field in a document to the current date or time.
$inc

The MongoDB $inc operator allows us to perform atomic increment operations on specified fields.
$mul

$mul is an update operator in MongoDB used to multiply the value of a field by a given number.
$pop

The MongoDB $pop operator is used to remove the first or last element from an array.
$pull

The MongoDB $pull operator is used to remove elements from an array that match a specific condition.
$pullAll

The $pullAll operator in MongoDB is used to remove all elements in an array that match a specified value.
$push

The $push operator is an update operator in MongoDB used to append one or multiple values to the end of an array.
$setOnInsert

Use MongoDB $setOnInsert with upsert:true to set fields only when an update inserts a new document, while $set handles fields that should change on every update.
$sort

The MongoDB $sort operator is an important operator in the MongoDB query language, used to sort query results by specified fields.