mongodb delete all collections code example

Example 1: mongodb remove all from collection

db.collection.remove({})

Example 2: delete collection mongodb

db.collection.drop()

Example 3: delete an item from db collection mongodb

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

Example 4: find All and delete in mongodb

db.products.remove( { qty: { $gt: 20 } } )