ALTER EXTENSION (original) (raw)

ALTER EXTENSION — change the definition of an extension

Synopsis

ALTER EXTENSION name UPDATE [ TO newversion ] ALTER EXTENSION name SET SCHEMA newschema ALTER EXTENSION name ADD memberobject ALTER EXTENSION name DROP memberobject

where memberobject is:

ACCESS METHOD objectname | AGGREGATE aggregatename ( aggregatesignature ) | CAST (sourcetype AS targettype) | COLLATION objectname | CONVERSION objectname | DOMAIN objectname | EVENT TRIGGER objectname | FOREIGN DATA WRAPPER objectname | FOREIGN TABLE objectname | FUNCTION functionname [ ( [ [ argmode ] [ argname ] argtype [, ...] ] ) ] | MATERIALIZED VIEW objectname | OPERATOR operatorname (lefttype, righttype) | OPERATOR CLASS objectname USING indexmethod | OPERATOR FAMILY objectname USING indexmethod | [ PROCEDURAL ] LANGUAGE objectname | PROCEDURE procedurename [ ( [ [ argmode ] [ argname ] argtype [, ...] ] ) ] | ROUTINE routinename [ ( [ [ argmode ] [ argname ] argtype [, ...] ] ) ] | SCHEMA objectname | SEQUENCE objectname | SERVER objectname | TABLE objectname | TEXT SEARCH CONFIGURATION objectname | TEXT SEARCH DICTIONARY objectname | TEXT SEARCH PARSER objectname | TEXT SEARCH TEMPLATE objectname | TRANSFORM FOR typename LANGUAGE langname | TYPE objectname | VIEW objectname

and aggregatesignature is:

• | [ argmode ] [ argname ] argtype [ , ... ] | [ [ argmode ] [ argname ] argtype [ , ... ] ] ORDER BY [ argmode ] [ argname ] argtype [ , ... ]

Description

ALTER EXTENSION changes the definition of an installed extension. There are several subforms:

UPDATE

This form updates the extension to a newer version. The extension must supply a suitable update script (or series of scripts) that can modify the currently-installed version into the requested version.

SET SCHEMA

This form moves the extension's objects into another schema. The extension has to be relocatable for this command to succeed.

ADD _`memberobject`_

This form adds an existing object to the extension. This is mainly useful in extension update scripts. The object will subsequently be treated as a member of the extension; notably, it can only be dropped by dropping the extension.

DROP _`memberobject`_

This form removes a member object from the extension. This is mainly useful in extension update scripts. The object is not dropped, only disassociated from the extension.

See Section 36.17 for more information about these operations.

You must own the extension to use ALTER EXTENSION. The ADD/DROP forms require ownership of the added/dropped object as well.

Parameters

name

The name of an installed extension.

newversion

The desired new version of the extension. This can be written as either an identifier or a string literal. If not specified, ALTER EXTENSION UPDATE attempts to update to whatever is shown as the default version in the extension's control file.

newschema

The new schema for the extension.

objectname
aggregatename
functionname
operatorname
procedurename
routinename

The name of an object to be added to or removed from the extension. Names of tables, aggregates, domains, foreign tables, functions, operators, operator classes, operator families, procedures, routines, sequences, text search objects, types, and views can be schema-qualified.

sourcetype

The name of the source data type of the cast.

targettype

The name of the target data type of the cast.

argmode

The mode of a function, procedure, or aggregate argument: IN, OUT, INOUT, or VARIADIC. If omitted, the default is IN. Note that ALTER EXTENSION does not actually pay any attention to OUT arguments, since only the input arguments are needed to determine the function's identity. So it is sufficient to list the IN, INOUT, and VARIADIC arguments.

argname

The name of a function, procedure, or aggregate argument. Note that ALTER EXTENSION does not actually pay any attention to argument names, since only the argument data types are needed to determine the function's identity.

argtype

The data type of a function, procedure, or aggregate argument.

lefttype
righttype

The data type(s) of the operator's arguments (optionally schema-qualified). Write NONE for the missing argument of a prefix operator.

PROCEDURAL

This is a noise word.

typename

The name of the data type of the transform.

langname

The name of the language of the transform.

Examples

To update the hstore extension to version 2.0:

ALTER EXTENSION hstore UPDATE TO '2.0';

To change the schema of the hstore extension to utils:

ALTER EXTENSION hstore SET SCHEMA utils;

To add an existing function to the hstore extension:

ALTER EXTENSION hstore ADD FUNCTION populate_record(anyelement, hstore);

Compatibility

ALTER EXTENSION is a PostgreSQL extension.