50.56. pg_user_mapping
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 50-57. 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 |
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https://www.postgresql.org/docs/9.6/catalog-pg-user-mapping.html