mongoShell Methods> Collection Methods> db.collection.find() db.collection.find()¶ On this page 说明 Behavior 示例 说明¶ db.collection.find(query,projection)¶ Selects documents in a collection and returns acursorto the selected documents. ...
If run interactively in the mongo shell, the mongo shell automatically calls .finish() to return the results. For scripts, however, you must explicitly call .next(), or .finish(), to return the results. For list of cursor-related methods, see db.collection.explain().find().help(). db...
mongo Shell Methods / Collection Methods db.collection.createIndex() This version of the documentation is archived and no longer supported. View the current documentation to learn how to upgrade your version of MongoDB. Definition db.collection.createIndex(keys, options, commitQuorum) Important mong...
The db.getCollection() object can access any collection methods. The collection specified may or may not exist on the server. If the collection does not exist, MongoDB creates it implicitly as part of write operations like db.collection.insertOne(). ...
show collections show collections in current database show users show users in current database show profile show most recent system.profile entries with time >= 1ms use <db name> set curent database to <db name> db.help() help on DB methods ...
If we stick to thesemver spec, then anything that breaks the API should happen in aMAJORrelease, like@6.0.0as opposed to aminorrelease like@5.3.0or apatchrelease like@5.2.10. Looking back at the history of the native driver, I wouldn't expect them to remove these methods until v4 of...
The db.collection.deleteMany() method is used to delete multiple documents from a MongoDB collection that match a given filter. If no filter is provided, all documents in the collection will be deleted. This method is ideal for batch deletions where multiple records meet specific criteria. ...
The db.collection.findOneAndDelete() method in MongoDB finds a single document that matches the filter, deletes it, and returns the deleted document. This is particularly useful when you want to retrieve and remove a document in a single operation, ensuring atomicity. ...
Methods inherited from java.lang.Objectclone equals finalize getClass hashCode notify notifyAll toString wait wait wait Constructor Details MongoDBCollectionCreateUpdateProperties public MongoDBCollectionCreateUpdateProperties() Creates an instance of MongoDBCollectionCreateUpdateProperti...
Methods inherited from java.lang.Objectclone equals finalize getClass hashCode notify notifyAll toString wait wait wait Constructor Details MongoDbAtlasCollectionDataset public MongoDbAtlasCollectionDataset() Creates an instance of MongoDbAtlasCollectionDataset class....