ALTER FOREIGN DATA WRAPPER
Name
ALTER FOREIGN DATA WRAPPER -- change the definition of a foreign-data wrapper
Synopsis
ALTER FOREIGN DATA WRAPPER name
    [ HANDLER handler_function | NO HANDLER ]
    [ VALIDATOR validator_function | NO VALIDATOR ]
    [ OPTIONS ( [ ADD | SET | DROP ] option ['value'] [, ... ]) ]
ALTER FOREIGN DATA WRAPPER name OWNER TO new_owner
ALTER FOREIGN DATA WRAPPER name RENAME TO new_nameDescription
Note: The following description applies only to Postgres-XC
   FOREIGN DATA WRAPPER has not been supported
   by Postgres-XC yet.  This command may be supported
   in the future releases.