| Postgres-XC 1.2 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 view pg_user_mappings provides access to information about user mappings. This is essentially a publicly readable view of pg_user_mapping that leaves out the options field if the user has no rights to use it.
Table 47-77. pg_user_mappings Columns
| Name | Type | References | Description |
|---|---|---|---|
| umid | oid | pg_user_mapping.oid | OID of the user mapping |
| srvid | oid | pg_foreign_server.oid | The OID of the foreign server that contains this mapping |
| srvname | name | pg_foreign_server.srvname | Name of the foreign server |
| umuser | oid | pg_authid.oid | OID of the local role being mapped, 0 if the user mapping is public |
| usename | name | Name of the local user to be mapped | |
| umoptions | text[] | User mapping specific options, as "keyword=value" strings, if the current user is the owner of the foreign server, else null |