Supported Versions: Current (16) / 15 / 14 / 13 / 12
Development Versions: 17 / devel
Unsupported versions: 11 / 10 / 9.6 / 9.5 / 9.4 / 9.3 / 9.2 / 9.1

53.22. pg_extension #

The catalog pg_extension stores information about the installed extensions. See Section 38.17 for details about extensions.

Table 53.22. pg_extension Columns

Column Type


oid oid

Row identifier

extname name

Name of the extension

extowner oid (references pg_authid.oid)

Owner of the extension

extnamespace oid (references pg_namespace.oid)

Schema containing the extension's exported objects

extrelocatable bool

True if extension can be relocated to another schema

extversion text

Version name for the extension

extconfig oid[] (references pg_class.oid)

Array of regclass OIDs for the extension's configuration table(s), or NULL if none

extcondition text[]

Array of WHERE-clause filter conditions for the extension's configuration table(s), or NULL if none

Note that unlike most catalogs with a namespace column, extnamespace is not meant to imply that the extension belongs to that schema. Extension names are never schema-qualified. Rather, extnamespace indicates the schema that contains most or all of the extension's objects. If extrelocatable is true, then this schema must in fact contain all schema-qualifiable objects belonging to the extension.

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