RenamenxCommand
RENAMENX _oldkey_ _newkey_
Time complexity: O(1)Rename oldkey into newkey but fails if the destination key newkey already exists.
Return value
Integer reply, specifically:1 if the key was renamed 0 if the target key already exist -1 if the source key does not exist -3 if source and destination keys are the same
See also
- RENAME is like RENAMENX but overwrite existing destionation key.