PostgreSQL:

CREATE FOREIGN DATA WRAPPER

Topic

CREATE FOREIGN DATA WRAPPER name
[ HANDLER handler_function | NO HANDLER ]
[ VALIDATOR validator_function | NO VALIDATOR ]
[ OPTIONS ( option 'value' [, ... ] ) ]

Example

CREATE FOREIGN DATA WRAPPER dummy;
CREATE FOREIGN DATA WRAPPER file HANDLER file_fdw_handler;
CREATE FOREIGN DATA WRAPPER mywrapper
OPTIONS (debug 'true');

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