> 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_foreign_table.md).

# 53.25. pg\_foreign\_table

## 53.25. pg\_foreign\_table

The catalog `pg_foreign_table` contains auxiliary information about foreign tables. A foreign table is primarily represented by a [`pg_class`](/15/internals/system-catalogs/pg_class.md) entry, just like a regular table. Its `pg_foreign_table` entry contains the information that is pertinent only to foreign tables and not any other kind of relation.

**Table 53.25. `pg_foreign_table` Columns**

| <p>Column Type</p><p>Description</p>                                                                                                                                                                                                                                                       |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| <p><code>ftrelid</code> <code>oid</code> (references <a href="/15/internals/system-catalogs/pg_class.md"><code>pg\_class</code></a>.<code>oid</code>)</p><p>The OID of the <a href="/15/internals/system-catalogs/pg_class.md"><code>pg\_class</code></a> entry for this foreign table</p> |
| <p><code>ftserver</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>OID of the foreign server for this foreign table</p>                                                       |
| <p><code>ftoptions</code> <code>text\[]</code></p><p>Foreign table options, as “keyword=value” strings</p>                                                                                                                                                                                 |

***

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


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