The pg_foreign_data_wrapper catalog provides information about foreign-data wrapper definitions.
| Column name | Data type | Description |
|---|---|---|
oid |
oid |
A row identifier. |
fdwname |
name |
The name of the foreign-data wrapper. |
fdwowner |
oid (references pg_authid.oid) |
The OID of the role that owns the foreign-data wrapper. |
fdwhandler |
oid (references pg_proc.oid) |
The OID of the handler function that provides execution routines for the foreign-data wrapper.0 – No handler provided. |
fdwvalidator |
oid (references pg_proc.oid) |
The OID of the validator function that checks the validity of options for the foreign-data wrapper, as well as for foreign servers and user mappings.0 – No validator provided. |
fdwacl |
aclitem[] |
Access privileges for the foreign-data wrapper. |
fdwoptions |
text[] |
Foreign-data wrapper–specific options as “keyword=value” strings. |