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MongoDB Update Operators


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