MQL reference navigation
MongoDB Query Language (MQL) Array Update Operators
Array update operators are used to modify array elements and structure.
$
The $ positional operator identifies an element in an array to update without explicitly specifying the position of the element in the array.
$addToSet
The addToSet operator adds elements to an array if they don't already exist, while ensuring uniqueness of elements within the set.
$each
The $each operator is used within an `$addToSet` or `$push` operation to add multiple elements to an array field in a single update operation.
$pop
The $pop operator removes the first or last element of an array.
$[]
The $[] operator is used to update all elements in an array that match the query condition.
$[identifier]
The $[identifier] operator is used to update all elements using a specific identifier in an array that match the query condition.
$position
The $position is used to specify the position in the array where a new element should be inserted.
$pull
Removes all instances of a value from an array.
$pullAll
The $pullAll operator is used to remove all instances of the specified values from an array.
$push
The $push operator adds a specified value to an array within a document.