ALTER PROCEDURE

ALTER PROCEDURE

ALTER PROCEDURE

7

SQL - Language Statements

ALTER PROCEDURE

change the definition of a procedure

ALTER PROCEDURE

name

[ ( [ [

argmode

] [

argname

]

argtype

[, ...] ] ) ]

action

[ ... ] [ RESTRICT ] ALTER PROCEDURE

name

[ ( [ [

argmode

] [

argname

]

argtype

[, ...] ] ) ] RENAME TO

new_name

ALTER PROCEDURE

name

[ ( [ [

argmode

] [

argname

]

argtype

[, ...] ] ) ] OWNER TO {

new_owner

| CURRENT_ROLE | CURRENT_USER | SESSION_USER } ALTER PROCEDURE

name

[ ( [ [

argmode

] [

argname

]

argtype

[, ...] ] ) ] SET SCHEMA

new_schema

ALTER PROCEDURE

name

[ ( [ [

argmode

] [

argname

]

argtype

[, ...] ] ) ] [ NO ] DEPENDS ON EXTENSION

extension_name

where

action

is one of:

[ EXTERNAL ] SECURITY INVOKER | [ EXTERNAL ] SECURITY DEFINER SET

configuration_parameter

{ TO | = } {

value

| DEFAULT } SET

configuration_parameter

FROM CURRENT RESET

configuration_parameter

RESET ALL

Description#

ALTER PROCEDURE changes the definition of a procedure.

You must own the procedure to use ALTER PROCEDURE. To change a procedure's schema, you must also have CREATE privilege on the new schema. To alter the owner, you must be able to SET ROLE to the new owning role, and that role must have CREATE privilege on the procedure's schema. (These restrictions enforce that altering the owner doesn't do anything you couldn't do by dropping and recreating the procedure. However, a superuser can alter ownership of any procedure anyway.)

Parameters#

\<name>
The name (optionally schema-qualified) of an existing procedure. If no argument list is specified, the name must be unique in its schema.

\<argmode>
The mode of an argument: IN, OUT, INOUT, or VARIADIC. If omitted, the default is IN.

\<argname>
The name of an argument. Note that ALTER PROCEDURE does not actually pay any attention to argument names, since only the argument data types are used to determine the procedure's identity.

\<argtype>
The data type(s) of the procedure's arguments (optionally schema-qualified), if any. See ??? for the details of how the procedure is looked up using the argument data type(s).

\<new_name>
The new name of the procedure.

\<new_owner>
The new owner of the procedure. Note that if the procedure is marked SECURITY DEFINER, it will subsequently execute as the new owner.

\<new_schema>
The new schema for the procedure.

\<extension_name>
This form marks the procedure as dependent on the extension, or no longer dependent on the extension if NO is specified. A procedure that's marked as dependent on an extension is dropped when the extension is dropped, even if cascade is not specified. A procedure can depend upon multiple extensions, and will be dropped when any one of those extensions is dropped.

EXTERNAL SECURITY INVOKER; EXTERNAL SECURITY DEFINER
Change whether the procedure is a security definer or not. The key word EXTERNAL is ignored for SQL conformance. See ??? for more information about this capability.

\<configuration_parameter>; \<value>
Add or change the assignment to be made to a configuration parameter when the procedure is called. If \<value> is DEFAULT or, equivalently, RESET is used, the procedure-local setting is removed, so that the procedure executes with the value present in its environment. Use RESET ALL to clear all procedure-local settings. SET FROM CURRENT saves the value of the parameter that is current when ALTER PROCEDURE is executed as the value to be applied when the procedure is entered.

See ??? and ??? for more information about allowed parameter names and values.

RESTRICT
Ignored for conformance with the SQL standard.

Examples#

To rename the procedure insert_data with two arguments of type integer to insert_record:

ALTER PROCEDURE insert_data(integer, integer) RENAME TO insert_record;

To change the owner of the procedure insert_data with two arguments of type integer to joe:

ALTER PROCEDURE insert_data(integer, integer) OWNER TO joe;

To change the schema of the procedure insert_data with two arguments of type integer to accounting:

ALTER PROCEDURE insert_data(integer, integer) SET SCHEMA accounting;

To mark the procedure insert_data(integer, integer) as being dependent on the extension myext:

ALTER PROCEDURE insert_data(integer, integer) DEPENDS ON EXTENSION myext;

To adjust the search path that is automatically set for a procedure:

ALTER PROCEDURE check_password(text) SET search_path = admin, pg_temp;

To disable automatic setting of search_path for a procedure:

ALTER PROCEDURE check_password(text) RESET search_path;

The procedure will now execute with whatever search path is used by its caller.

Compatibility#

This statement is partially compatible with the ALTER PROCEDURE statement in the SQL standard. The standard allows more properties of a procedure to be modified, but does not provide the ability to rename a procedure, make a procedure a security definer, attach configuration parameter values to a procedure, or change the owner, schema, or volatility of a procedure. The standard also requires the RESTRICT key word, which is optional in PostgreSQL.

See Also#