> For the complete documentation index, see [llms.txt](https://docs.postgresql.tw/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.postgresql.tw/15/internals/system-catalogs/pg_user_mapping.md).

# 53.65. pg\_user\_mapping

## 53.65. 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`](/15/internals/54.-system-views/pg_user_mappings.md) instead.

**Table 53.66. `pg_user_mapping` Columns**

| <p>Column Type</p><p>Description</p>                                                                                                                                                                                                         |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| <p><code>oid</code> <code>oid</code></p><p>Row identifier</p>                                                                                                                                                                                |
| <p><code>umuser</code> <code>oid</code> (references <a href="/15/internals/system-catalogs/pg_authid.md"><code>pg\_authid</code></a>.<code>oid</code>)</p><p>OID of the local role being mapped, or zero if the user mapping is public</p>   |
| <p><code>umserver</code> <code>oid</code> (references <a href="/15/internals/system-catalogs/pg_foreign_server.md"><code>pg\_foreign\_server</code></a>.<code>oid</code>)</p><p>The OID of the foreign server that contains this mapping</p> |
| <p><code>umoptions</code> <code>text\[]</code></p><p>User mapping specific options, as “keyword=value” strings</p>                                                                                                                           |

***

原文：[PostgreSQL 15.19 Documentation](/15/internals/system-catalogs/pg_user_mapping.md)（英文原文，待翻譯）


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