1 How to remove data from mongodb collection using nodejs and mongoose 0 Unable to delete a document in mongodb using DELETE method 1 How to delete all documents except one 0 Delete Document in mongodb via mongoose Hot Network Questions In a perfect vacuum, shouldn't every solid be...
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 we execute the remove() method applied on any collection in MongoDB database then, the writeResult object will return the status of the operation performed. Syntax The MongoDB Remove method includes two basic syntaxes implemented for removing any collection from MongoDB database described as...
Today, we will learn how to use $pull, $pullAll, $pop, $unset, and the positional operator ($) to remove an element from an array or array of documents while working in MongoDB.MongoDB Remove Element From an ArrayWe must have a sample document(s) collection to practice all the ...
i would to remove duplicate data according to X and y when they are the same values so in this case (need to remove when z=3 and z =4) i use db.collection.aggregate([{"$sort":{"_id":1}},{"$group":{"_id":"$x","doc":{"$first":"$$ROOT"}}},{"$replaceRoot":{"newRo...
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. ...
Type “mongo” to launch the mongo shell and connect to MongoDB to perform some database operation. This will display the “> ” prompt where you can type mongo client commands. # mongo MongoDB shell version: 2.2.2 connecting to: test ...
Remove database files: rm -rf $(brew --prefix)/var/mongod To check if the uninstall was properly done, check if any MongoDB files are still present: ls -al /usr/local/bin/mongo* zsh: no matches found: /usr/local/bin/mongo* ...
MongoServerError: Exceeded memory limit for $group, but didn't allow external sort. Pass allowDiskUse:true to opt in. if I remove{ allowDiskUse: true}. The index is only about 37M. How can sorting need more than 100M? Daniel_Li1(Daniel Li)September 18, 2023, 3:16pm6 ...
How a replica set in MongoDB works,ApsaraDB for MongoDB:A replica set in ApsaraDB for MongoDB is a group of mongod processes and contains a primary node and multiple secondary nodes. MongoDB drivers write data to the primary node only. Then, data is sync