---
title: "pg_language"
id: catalog-pg-language
pg_version: "20devel"
---

<a id="catalog-pg-language"></a>

## 52.29. pg_language

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

**pg_language Columns**

| Column Type | Description | 
| --- | --- |
| `oid` `oid` | Row identifier |
| `lanname` `name` | Name of the language |
| `lanowner` `oid` (references [pg_authid](catalog-pg-authid.md).`oid`) | Owner of the language |
| `lanispl` `bool` | 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. |
| `lanpltrusted` `bool` | 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. |
| `lanplcallfoid` `oid` (references [pg_proc](catalog-pg-proc.md).`oid`) | 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. |
| `laninline` `oid` (references [pg_proc](catalog-pg-proc.md).`oid`) | This references a function that is responsible for executing "inline" anonymous code blocks ([DO](sql-do.md) blocks). Zero if inline blocks are not supported. |
| `lanvalidator` `oid` (references [pg_proc](catalog-pg-proc.md).`oid`) | 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. |
| `lanacl` `aclitem[]` | Access privileges; see [Section 5.9](ddl-priv.md) for details |