remove document mongodb code example

Example 1: mongodb delete all documents

db.collection.delete_many( { } );

Example 2: mongo delete all documents

db.bios.remove( { } )

Example 3: mongodb delete all documents

# To remove all documents in a collection, call the remove method with an empty query
# document {}. The following operation deletes all documents from the bios collection:

db.bios.remove( { } )

Example 4: delete document mongose

Model.deleteOne({ options }, function (err) {});

Example 5: mongoose remove document from array

Favorite.updateOne( {cn: req.params.name}, { $pullAll: {uid: [req.params.deleteUid] } } )

Example 6: how to delete subdocument mongodb

db.getCollection('products').update({}, 
{$pull: {reviews:
{user: ObjectId("5f6e2e0b70eb0208fc84011a")}}},
{multi: true})