This page in other versions: 9.1 / 9.2 / 9.3 / 9.4 / 9.5 / current (9.6)  |  Development versions: devel  |  Unsupported versions: 8.4 / 9.0

49.23. pg_foreign_data_wrapper

The catalog pg_foreign_data_wrapper stores foreign-data wrapper definitions. A foreign-data wrapper is the mechanism by which external data, residing on foreign servers, is accessed.

Table 49-23. pg_foreign_data_wrapper Columns

Name Type References Description
oid oid   Row identifier (hidden attribute; must be explicitly selected)
fdwname name   Name of the foreign-data wrapper
fdwowner oid pg_authid.oid Owner of the foreign-data wrapper
fdwhandler oid pg_proc.oid References a handler function that is responsible for supplying execution routines for the foreign-data wrapper. Zero if no handler is provided
fdwvalidator oid pg_proc.oid References a validator function that is responsible for checking the validity of the options given to the foreign-data wrapper, as well as options for foreign servers and user mappings using the foreign-data wrapper. Zero if no validator is provided
fdwacl aclitem[]   Access privileges; see GRANT and REVOKE for details
fdwoptions text[]   Foreign-data wrapper specific options, as "keyword=value" strings

Submit correction

If you see anything in the documentation that is not correct, does not match your experience with the particular feature or requires further clarification, please use this form to report a documentation issue.

Privacy Policy | About PostgreSQL
Copyright © 1996-2016 The PostgreSQL Global Development Group