DROP FOREIGN TABLE — 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.
IF EXISTSDo not throw an error if the foreign table does not exist. A notice is issued in this case.
nameThe name (optionally schema-qualified) of the foreign table to drop.
CASCADEAutomatically drop objects that depend on the foreign table (such as views), and in turn all objects that depend on those objects (see Section 5.14).
RESTRICTRefuse 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 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.
Read the upstream documentation. For corrections, first check the current version.