> 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/internals/catalogs/catalog-pg-language.md).

# 52.29. pg\_language \#

The catalog `pg_language` registers languages in which you can write functions or stored procedures. See [CREATE LANGUAGE](/reference/sql-commands/sql-createlanguage.md) and [Chapter 40](/server-programming/xplang.md) for more information about language handlers.

**Table 52.29. `pg_language` Columns**

| <p>Column Type</p><p>Description</p>                                                                                                                                                                                                                                                                                                                                         |
| ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| <p><code>oid</code> <code>oid</code></p><p>Row identifier</p>                                                                                                                                                                                                                                                                                                                |
| <p><code>lanname</code> <code>name</code></p><p>Name of the language</p>                                                                                                                                                                                                                                                                                                     |
| <p><code>lanowner</code> <code>oid</code> (references <a href="/pages/nyEMOe5gQKgypFQTDbjS"><code>pg\_authid</code></a>.<code>oid</code>)</p><p>Owner of the language</p>                                                                                                                                                                                                    |
| <p><code>lanispl</code> <code>bool</code></p><p>This is false for internal languages (such as SQL) and true for user-defined languages. Currently, pg\_dump still uses this to determine which languages need to be dumped, but this might be replaced by a different mechanism in the future.</p>                                                                           |
| <p><code>lanpltrusted</code> <code>bool</code></p><p>True if this is a trusted language, which means that it is believed not to grant access to anything outside the normal SQL execution environment. Only superusers can create functions in untrusted languages.</p>                                                                                                      |
| <p><code>lanplcallfoid</code> <code>oid</code> (references <a href="/pages/8TiLY9QeJalZY0OBAANF"><code>pg\_proc</code></a>.<code>oid</code>)</p><p>For noninternal languages this references the language handler, which is a special function that is responsible for executing all functions that are written in the particular language. Zero for internal languages.</p> |
| <p><code>laninline</code> <code>oid</code> (references <a href="/pages/8TiLY9QeJalZY0OBAANF"><code>pg\_proc</code></a>.<code>oid</code>)</p><p>This references a function that is responsible for executing “inline” anonymous code blocks (<a href="/pages/-LKQMQXAhJ9BFtDA7v35">DO</a> blocks). Zero if inline blocks are not supported.</p>                               |
| <p><code>lanvalidator</code> <code>oid</code> (references <a href="/pages/8TiLY9QeJalZY0OBAANF"><code>pg\_proc</code></a>.<code>oid</code>)</p><p>This references a language validator function that is responsible for checking the syntax and validity of new functions when they are created. Zero if no validator is provided.</p>                                       |
| <p><code>lanacl</code> <code>aclitem\[]</code></p><p>Access privileges; see <a href="/pages/VX212noXJkZ6WiwCHQE7">Section 5.8</a> for details</p>                                                                                                                                                                                                                            |

<br>

***

原文：[PostgreSQL 18.6 Documentation](https://www.postgresql.org/docs/18/catalog-pg-language.html)（英文原文，待翻譯）


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