DROP FOREIGN DATA WRAPPER
Name
DROP FOREIGN DATA WRAPPER -- remove a foreign-data wrapper
Synopsis
DROP FOREIGN DATA WRAPPER [ IF EXISTS ] name [ CASCADE | RESTRICT ]
Description
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.
  
Compatibility
   DROP FOREIGN DATA WRAPPER conforms to ISO/IEC
   9075-9 (SQL/MED).  The IF EXISTS clause is
   a PostgreSQL extension.