> 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-applicable-roles.md).

# 35.5. applicable\_roles \#

檢視表 `applicable_roles` 列出目前使用者可使用其權限的所有角色。這表示從目前 使用者到所述角色之間存在某條角色授與鏈。目前使用者本身也是適用角色。適用角色 集合通常用於權限檢查。

**表 35.3. `applicable_roles` 欄位**

| <p>欄位類型</p><p>說明</p>                                                                                                     |
| ------------------------------------------------------------------------------------------------------------------------ |
| <p><code>grantee</code> <code>sql\_identifier</code></p><p>被授與此角色成員資格的角色名稱（可以是目前使用者；若為巢狀角色成員資格， 也可以是其他角色）</p>            |
| <p><code>role\_name</code> <code>sql\_identifier</code></p><p>角色名稱</p>                                                   |
| <p><code>is\_grantable</code> <code>yes\_or\_no</code></p><p>若受授與者具有此角色的管理選項，則為 <code>YES</code>；否則為 <code>NO</code></p> |

<br>

***

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


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