Lu, Huayi
a24ca60074
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com> Co-authored-by: Lu, Huayi <luhuayi@huawei.com> Co-committed-by: Lu, Huayi <luhuayi@huawei.com>
8.0 KiB
PG_FOREIGN_DATA_WRAPPER
PG_FOREIGN_DATA_WRAPPER records foreign-data wrapper definitions. A foreign-data wrapper is the mechanism by which external data, residing on foreign servers, is accessed.
Name |
Type |
Reference |
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. Its value is 0 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. Its value is 0 if no validator is provided. |
fdwacl |
aclitem[] |
- |
Access permissions |
fdwoptions |
text[] |
- |
Option used for foreign data wrappers. It is a keyword=value string. |