> 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/client-interfaces/information-schema/infoschema-user-mappings.md).

# 35.62. user\_mappings \#

檢視表 `user_mappings` 包含目前資料庫中定義的所有使用者對應。只有目前使用者 可存取相應外部伺服器的使用者對應會顯示在此檢視表中（使用者為其擁有者或具有某項 權限時即可存取）。

**表 35.60. `user_mappings` 欄位**

| <p>欄位類型</p><p>說明</p>                                                                                                      |
| ------------------------------------------------------------------------------------------------------------------------- |
| <p><code>authorization\_identifier</code> <code>sql\_identifier</code></p><p>正在對應的使用者名稱；若為公開對應，則為 <code>PUBLIC</code></p> |
| <p><code>foreign\_server\_catalog</code> <code>sql\_identifier</code></p><p>定義此對應所用外部伺服器的資料庫名稱（一律為目前資料庫）</p>              |
| <p><code>foreign\_server\_name</code> <code>sql\_identifier</code></p><p>此對應所用外部伺服器的名稱</p>                                |

<br>

***

【[PostgreSQL 18.6 文件](https://www.postgresql.org/docs/18/infoschema-user-mappings.html)】


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