“template” information for procedural languages.
A template for a language allows the language to be created in a
particular database by a simple
CREATE LANGUAGE command,
with no need to specify implementation details.
Unlike most system catalogs,
is shared across all databases of a cluster: there is only one
pg_pltemplate per cluster, not
one per database. This allows the information to be accessible in
each database as it is needed.
|Name of the language this template is for|
|True if language is considered trusted|
|True if language may be created by a database owner|
|Name of call handler function|
|Name of anonymous-block handler function, or null if none|
|Name of validator function, or null if none|
|Path of shared library that implements language|
|Access privileges for template (not actually used)|
There are not currently any commands that manipulate procedural language
templates; to change the built-in information, a superuser must modify
the table using ordinary
It is likely that
pg_pltemplate will be removed in some
future release of PostgreSQL, in favor of
keeping this knowledge about procedural languages in their respective
extension installation scripts.