| Postgres-XC 1.2devel Documentation | ||||
|---|---|---|---|---|
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This catalog exists in each coordinator and datanode in Postgres-XC as inheritted from PostgreSQL. Please note that current release of Postgres-XC does not support foreign data wrapper.
Note: The following description applies both to Postgres-XC and PostgreSQL if not described explicitly. You can read PostgreSQL as Postgres-XC except for version number, which is specific to each product.
The catalog pg_user_mapping stores the mappings from local user to remote. Access to this catalog is restricted from normal users, use the view pg_user_mappings instead.
Table 47-53. pg_user_mapping Columns
| Name | Type | References | Description |
|---|---|---|---|
| oid | oid | Row identifier (hidden attribute; must be explicitly selected) | |
| umuser | oid | pg_authid.oid | OID of the local role being mapped, 0 if the user mapping is public |
| umserver | oid | pg_foreign_server.oid | The OID of the foreign server that contains this mapping |
| umoptions | text[] | User mapping specific options, as "keyword=value" strings |