PostgreSQL
52.37. pg_pltemplate
The catalog pg_pltemplate stores “[.quote]#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, pg_pltemplate is shared across all databases of a cluster: there is only one copy of pg_pltemplate per cluster, not one per database. This allows the information to be accessible in each database as it is needed.
Table 52.37. pg_pltemplate Columns
| Name | Type | Description |
|---|---|---|
|
|
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 INSERT, DELETE, or UPDATE commands.
Note
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.
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