MongoDB Manual / Reference / Operators The following modifiers are available for use in update operations, for example, indb.collection.updateMany()anddb.collection.findAndModify(). Specify the operator expression in a document of the form:
if the <update> document contains update operator modifiers, such as those using the $set modifier, then: the <update> document must contain only update operator expressions. the db.collection.update() method updates only the corresponding fields in the document. to update an embedded document ...
Modifiers NameDescription $each Modifies the $push and $addToSet operators to append multiple items for array updates. $slice Modifies the $push operator to limit the size of updated arrays. $sort Modifies the $push operator to reorder documents stored in an array. $position Modifies the $push...
Using Modifiers Usually only certain portions of a document need to be updated. Partial updates can be done extremely efficiently by usingatomic updatemodifiers. Update modifiers are special keys that can be used to specify complex update operations, such as altering, adding, or removing keys, and...
【MongoDB】Update Operators Update Operators Fields Array Operators Modifiers Bitwise
If a new document would be inserted and$new_objectcontains atomic modifiers (i.e.$operators), those operations will be applied to the$criteriaparameter to create the new document. If$new_objectdoes not contain atomic modifiers, it will be used as-is for the inserted document. See the upsert...
final public MongoDB\Driver\WriteResult MongoDB\Driver\Manager::executeUpdate ( string $namespace , array|object $filter , array|object $newObj [, array $updateOptions [, MongoDB\Driver\WriteConcern $writeConcern ]] ) Convenience method to execute a MongoDB\Driver\BulkWrite with only one updat...
If $new_object does not contain atomic modifiers, it will be used as-is for the inserted document. See the upsert examples below for more information. "multiple" All documents matching $criteria will be updated. MongoCollection::update() has exactly the opposite behavior of MongoCollection...
MongoDB Manual / Reference / Operators The following modifiers are available for use in update operations, for example, indb.collection.updateMany()anddb.collection.findAndModify(). Compatibility You can useupdate operatorsfor deployments hosted in the following environments: ...
Use update operators to modify MongoDB documents. You can set field values, manipulate arrays, and more.