pg_languageThe catalog pg_language registers languages in which you can write functions or stored procedures. See CREATE LANGUAGE and Chapter 41 for more information about language handlers.
Table 51.29. pg_language Columns
| Name | Type | References | Description |
|---|---|---|---|
oid |
oid |
Row identifier (hidden attribute; must be explicitly selected) | |
lanname |
name |
Name of the language | |
lanowner |
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 |
|
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 |
laninline |
oid |
|
This references a function that is responsible for executing “inline” anonymous code blocks (DO blocks). Zero if inline blocks are not supported. |
lanvalidator |
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 GRANT and REVOKE for details |