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ALTER EXTENSION(7)	  PostgreSQL 18.4 Documentation       ALTER EXTENSION(7)

NAME
     ALTER_EXTENSION - change the definition of an extension

SYNOPSIS
     ALTER EXTENSION name UPDATE [ TO new_version ]
     ALTER EXTENSION name SET SCHEMA new_schema
     ALTER EXTENSION name ADD member_object
     ALTER EXTENSION name DROP member_object

     where member_object is:

       ACCESS METHOD object_name |
       AGGREGATE aggregate_name ( aggregate_signature ) |
       CAST (source_type AS target_type) |
       COLLATION object_name |
       CONVERSION object_name |
       DOMAIN object_name |
       EVENT TRIGGER object_name |
       FOREIGN DATA WRAPPER object_name |
       FOREIGN TABLE object_name |
       FUNCTION function_name [ ( [ [ argmode ] [ argname ] argtype [, ...] ] ) ] |
       MATERIALIZED VIEW object_name |
       OPERATOR operator_name (left_type, right_type) |
       OPERATOR CLASS object_name USING index_method |
       OPERATOR FAMILY object_name USING index_method |
       [ PROCEDURAL ] LANGUAGE object_name |
       PROCEDURE procedure_name [ ( [ [ argmode ] [ argname ] argtype [, ...] ] ) ] |
       ROUTINE routine_name [ ( [ [ argmode ] [ argname ] argtype [, ...] ] ) ] |
       SCHEMA object_name |
       SEQUENCE object_name |
       SERVER object_name |
       TABLE object_name |
       TEXT SEARCH CONFIGURATION object_name |
       TEXT SEARCH DICTIONARY object_name |
       TEXT SEARCH PARSER object_name |
       TEXT SEARCH TEMPLATE object_name |
       TRANSFORM FOR type_name LANGUAGE lang_name |
       TYPE object_name |
       VIEW object_name

     and aggregate_signature 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 exten-
	 sion has to be relocatable for this command to succeed.

     ADD member_object
	 This form adds an existing object to the extension. This is mainly use-
	 ful  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 member_object
	 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 re-
     quire ownership of the added/dropped object as well.

PARAMETERS
     name
	 The name of an installed extension.

     new_version
	 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.

     new_schema
	 The new schema for the extension.

     object_name
     aggregate_name
     function_name
     operator_name
     procedure_name
     routine_name
	 The name of an object to be added to or  removed  from  the  extension.
	 Names of tables, aggregates, domains, foreign tables, functions, opera-
	 tors,	operator  classes,  operator families, procedures, routines, se-
	 quences, text search objects, types, and views can be schema-qualified.

     source_type
	 The name of the source data type of the cast.

     target_type
	 The name of the target data type of the cast.

     argmode
	 The mode of a function, procedure, or aggregate argument: IN, OUT,  IN-
	 OUT, or VARIADIC. If omitted, the default is IN. Note that ALTER EXTEN-
	 SION  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 AL-
	 TER EXTENSION does not actually pay any attention  to	argument  names,
	 since	only  the  argument data types are needed to determine the func-
	 tion's identity.

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

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

     PROCEDURAL
	 This is a noise word.

     type_name
	 The name of the data type of the transform.

     lang_name
	 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.

SEE ALSO
     CREATE EXTENSION (CREATE_EXTENSION(7)), DROP EXTENSION (DROP_EXTENSION(7))

PostgreSQL 18.4 		      2026		      ALTER EXTENSION(7)

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