The system catalog table pg_extension stores information about installed extensions.
| column | type | references | description |
|---|---|---|---|
extname |
name | Name of the extension. | |
extowner |
oid | pg_authid.oid | Owner of the extension |
extnamespace |
oid | pg_namespace.oid | Schema containing the extension exported objects. |
extrelocatable |
boolean | True if the extension can be relocated to another schema. | |
extversion |
text | Version name for the extension. | |
extconfig |
oid[] | pg_class.oid | Array of regclass OIDs for the extension configuration tables, or NULL if none. |
extcondition |
text[] | Array of WHERE-clause filter conditions for the extension configuration tables, or NULL if none. |
Unlike most catalogs with a namespace column, extnamespace does not imply that the extension belongs to that schema. Extension names are never schema-qualified. The extnamespace schema indicates the schema that contains most or all of the extension objects. If extrelocatable is true, then this schema must contain all schema-qualifiable objects that belong to the extension.
Parent topic: System Catalogs Definitions
