使用 Pymongo 重命名集合

Question

I realize that a collection can be renamed in MongoDB using

db["old_name"].renameCollection("new_name")

But is there an equivalent in PyMongo? I tried the following, but it didn't work either.

db["old_name"].rename_collection("new_name")

Answer 1

According to the documentation , the method is simply named rename .

rename(new_name, session=None, **kwargs)

     new_name: new name for this collection
     session (optional): a ClientSession
     **kwargs (optional): additional arguments to the rename command may be passed as keyword arguments to this helper method (i.e. dropTarget=True)

Answer 2

May be you can use rename in pymongo, just use

db.oldname.rename('newname')

You can check the link： https://api.mongodb.com/python/current/api/pymongo/collection.html?highlight=rename

Answer 3

An admin command to rename a collection can be executed in like manner.

query = {
    'renameCollection': '<source_namespace>', 
    'to': '<target_namespace>',
}
client.admin.command(query)

Answer 4

   query = bson.son.SON([
       ('renameCollection', 't1.ccd'),
       ('to', 't2.ccd2'),
   ])
   print(query)
   self.mgclient.admin.command(query)

Need to use bson.son.SON, as dict is unordered. Please refer to:

http://api.mongodb.com/python/current/api/bson/son.html#bson.son.SONhttp://api.mongodb.com/python/current/api/pymongo/database.html

Note the order of keys in the command document is significant (the “verb” must come first), so commands which require multiple keys (eg findandmodify) should use an instance of SON or a string and kwargs instead of a Python dict.