MongoDb delete
1 db.coll.remove({name: "Max"})
2 db.coll.remove({name: "Max"}, {justOne: true})
3 db.coll.remove({}) // WARNING! Deletes all the docs but not the collection itself and its index definitions
4 db.coll.remove({name: "Max"}, {"writeConcern": {"w": "majority", "wtimeout": 5000}})
5 db.coll.findOneAndDelete({"name": "Max"})$removefromset mongodb
> db.collection.update(
... {"StudentName": "John"},
... {$pull: { "StudentHobby": "Cooking"}});
WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })Copyright © 2021 Codeinu
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