DROP FOREIGN DATA WRAPPER SQL - Language Statements DROP FOREIGN DATA WRAPPER remove a foreign-data wrapper DROP FOREIGN DATA WRAPPER DROP FOREIGN DATA WRAPPER [ IF EXISTS ] name [ CASCADE | RESTRICT ] DROP FOREIGN DATA WRAPPER removes an existing foreign-data wrapper. To execute this command, the current user must be the owner of the foreign-data wrapper. IF EXISTS Do not throw an error if the foreign-data wrapper does not exist. A notice is issued in this case. name The name of an existing foreign-data wrapper. CASCADE Automatically drop objects that depend on the foreign-data wrapper (such as servers). RESTRICT Refuse to drop the foreign-data wrappers if any objects depend on it. This is the default. Drop the foreign-data wrapper dbi: DROP FOREIGN DATA WRAPPER dbi; DROP FOREIGN DATA WRAPPER conforms to ISO/IEC 9075-9 (SQL/MED). The IF EXISTS clause is a PostgreSQL extension.