If you try to drop a collection in the admin database or the config database from amongossince MongoDB 5.0, the drop command and thedb.collection.drop()function will produce an error. Instead, connect to the config server and perform the command to remove these collections. ...
If the collection does not exist in the database and cannot be appropriately deleted, the result will befalse. Use thedropandremovemethods to delete a collection from MongoDB. When uninstalling a collection, you must also specify the collection name. ...
方法是:Model.remove(删除文档条件,回调函数). 示例: // 删除所有的文档// Student是一个Model.Student.remove({},function(err) {// 筛选条件为空即是表示所有console.log("success");}); 也可以这样: // 删除所有的文档// Student是一个Model.Student.remove(function(err) {console.log("success");})...
To remove all documents in a MongoDB collection (from the command line) use the remove function, and give it an empty set of parentheses, like this: // remove all documents in the "stickynotes" collection db.stickynotes.remove({}) You can do the same thing from your Java, Scala, Ru...
When working with MongoDB you might have the need to remove all items from a collection.You can do so by calling the deleteMany method of a collection, passing an empty object.Like this:yourcollection.deleteMany({}) Here’s a full example:const mongo = require('mongodb').MongoClient ...
Unset –This operator is used in MongoDB to remove the field from the collection. Using unset operator we have to remove single as well as multiple field from the collection by using a single query. Field name 1 to field name N –This is defined as the name of field which was we have...
Method 1: Create a Collection in MongoDB via createCollection() The first way to create a collection is to use the built-increateCollection()database method. There are four different collection types in MongoDB: Standard. The most common collection type. Used for generaldata storage. ...
Reach out to MongoDB Let’s chat Investors Visit our investor portal Learn more Pricing Working with DataDrivers Winnie_Pooh(Winnie Pooh)January 10, 2022, 12:08pm1 I do this way: var collection2 = _database.GetCollection(“cap2”); ...
Before answering this question, I would first like to explain how concurrency works in MongoDB, inside and outside of transactions. Knowing this helps understand the answer. Locking MongoDB uses multi-granularity locking that allow shared access to a resource, such as a database or collection. ...
test> db.Teacher.find({}, {shift:1}) Conclusion This guide discovers the different methods of utilizing the $unset operator on the database collections in MongoDB. We discussed the simplest examples of unset to remove a single independent field, nested field value, or an array value via ind...