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Note: The following description applies both to Postgres-XC and PostgreSQL if not described explicitly.
The view foreign_data_wrappers contains all foreign-data wrappers defined in the current database. Only those foreign-data wrappers are shown that the current user has access to (by way of being the owner or having some privilege).
Table 33-23. foreign_data_wrappers Columns
| Name | Data Type | Description |
|---|---|---|
| foreign_data_wrapper_catalog | sql_identifier | Name of the database that contains the foreign-data wrapper (always the current database) |
| foreign_data_wrapper_name | sql_identifier | Name of the foreign-data wrapper |
| authorization_identifier | sql_identifier | Name of the owner of the foreign server |
| library_name | character_data | File name of the library that implementing this foreign-data wrapper |
| foreign_data_wrapper_language | character_data | Language used to implement this foreign-data wrapper |