> 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-column-domain-usage.md).

# 35.13. column\_domain\_usage \#

檢視表 `column_domain_usage` 列出資料表或檢視表中使用目前資料庫所定義、且由目前已啟用角色擁有之 domain 的所有欄位。

**表 35.11. `column_domain_usage` 欄位**

| <p>欄位類型</p><p>說明</p>                                                                              |
| ------------------------------------------------------------------------------------------------- |
| <p><code>domain\_catalog</code> <code>sql\_identifier</code></p><p>包含 domain 的資料庫名稱（一律為目前資料庫）</p> |
| <p><code>domain\_schema</code> <code>sql\_identifier</code></p><p>包含 domain 的 schema 名稱</p>       |
| <p><code>domain\_name</code> <code>sql\_identifier</code></p><p>domain 名稱</p>                     |
| <p><code>table\_catalog</code> <code>sql\_identifier</code></p><p>包含資料表的資料庫名稱（一律為目前資料庫）</p>       |
| <p><code>table\_schema</code> <code>sql\_identifier</code></p><p>包含資料表的 schema 名稱</p>             |
| <p><code>table\_name</code> <code>sql\_identifier</code></p><p>資料表名稱</p>                          |
| <p><code>column\_name</code> <code>sql\_identifier</code></p><p>欄位名稱</p>                          |

<br>

***

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


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