deletion in mongodb code example

Example 1: deletemany mongodb

try {
   db.orders.deleteMany( { "client" : "Crude Traders Inc." } );
} catch (e) {
   print (e);
}

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 an item from db collection mongodb

db.collection.remove(
   <query>,
   {
     justOne: <boolean>,
     writeConcern: <document>
   }
)