Remove a foreign table
DROP FOREIGN TABLE [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]
DROP FOREIGN TABLE removes a foreign table. Only the owner of a foreign table can remove it.
Do not throw an error if the foreign table does not exist. A notice is issued in this case.
The name (optionally schema-qualified) of the foreign table to drop.
Automatically drop objects that depend on the foreign table (such as views).
Refuse to drop the foreign table if any objects depend on it. This is the default.
To destroy two foreign tables, films and distributors:
DROP FOREIGN TABLE films, distributors;
This command conforms to the ISO/IEC 9075-9 (SQL/MED), except that the standard only allows one foreign table to be dropped per command, and apart from the IF EXISTS option, which is a PostgreSQL extension.