52.29. pg\_language

|       52.29. `pg_language`       |                   |                           |                  |                                    |
|:--------------------------------:|-------------------|---------------------------|------------------|------------------------------------|
|[Prev](catalog-pg-init-privs.html)|[Up](catalogs.html)|Chapter 52. System Catalogs|[Home](index.html)| [Next](catalog-pg-largeobject.html)|

---

## 52.29. `pg_language`

[]()

 The catalog `pg_language` registers languages in which you can write functions or stored procedures. See [CREATE LANGUAGE](sql-createlanguage.html) and [Chapter 42](xplang.html) for more information about language handlers.

**Table 52.29. `pg_language` Columns**

|                                                                                                                                     Column Type<br/><br/> Description                                                                                                                                    |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                                                                                                                                   `oid` `oid`<br/><br/> Row identifier                                                                                                                                   |
|                                                                                                                             `lanname` `name`<br/><br/> Name of the language                                                                                                                              |
|                                                                                                `lanowner` `oid` (references [`pg_authid`](catalog-pg-authid.html).`oid`)<br/><br/> Owner of the language                                                                                                 |
|                `lanispl` `bool`<br/><br/> 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`<br/><br/> 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.html).`oid`)<br/><br/> 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.html).`oid`)<br/><br/> This references a function that is responsible for executing “inline” anonymous code blocks ([DO](sql-do.html) blocks). Zero if inline blocks are not supported.                             |
|                   `lanvalidator` `oid` (references [`pg_proc`](catalog-pg-proc.html).`oid`)<br/><br/> 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[]`<br/><br/> Access privileges; see [Section 5.7](ddl-priv.html) for details                                                                                                      |

---

|[Prev](catalog-pg-init-privs.html)|[Up](catalogs.html)| [Next](catalog-pg-largeobject.html)|
|:---------------------------------|:-----------------:|-----------------------------------:|
|      52.28. `pg_init_privs`      |[Home](index.html) |       52.30. `pg_largeobject`      |

 // \<![CDATA[ \<-- For SVG support if ('WebSocket' in window) { (function() { function refreshCSS() { var sheets = [].slice.call(document.getElementsByTagName("link")); var head = document.getElementsByTagName("head")[0]; for (var i = 0; i \< sheets.length; ++i) { var elem = sheets[i]; head.removeChild(elem); var rel = elem.rel; if (elem.href && typeof rel != "string" || rel.length == 0 || rel.toLowerCase() == "stylesheet") { var url = elem.href.replace(/(&|\\?)\_cacheOverride=\\d+/, ''); elem.href = url + (url.indexOf('?') \>= 0 ? '&' : '?') + '\_cacheOverride=' + (new Date().valueOf()); } head.appendChild(elem); } } var protocol = window.location.protocol === 'http:' ? 'ws://' : 'wss://'; var address = protocol + window.location.host + window.location.pathname + '/ws'; var socket = new WebSocket(address); socket.onmessage = function(msg) { if (msg.data == 'reload') window.location.reload(); else if (msg.data == 'refreshcss') refreshCSS(); }; console.log('Live reload enabled.'); })(); } // ]]\>