$rename mongodb code example

Example 1: mongodb change key name

db.students.updateMany( {}, { $rename: { "nmae": "name" } } )

Example 2: mongodb rename database

# Dump db to a local folder
mongodump mongodb://user:pwd@localhost/old_name -o ./dump 

# Restore the db with the new name
mongorestore mongodb://user:pwd@localhost -d new_name ./dump/old_name

# Then run these commands in your mongodb shell
use old_name
db.dropDatabase()