ALTER VIEW - Amazon Aurora DSQL
Supported syntaxDescriptionParametersExamplesCompatibility

ALTER VIEW

The ALTER VIEW statement allows changing various properties of an existing view, and Aurora DSQL supports all the PostgreSQL syntax for this command.

Supported syntax

ALTER VIEW [ IF EXISTS ] name ALTER [ COLUMN ] column_name SET DEFAULT expression
ALTER VIEW [ IF EXISTS ] name ALTER [ COLUMN ] column_name DROP DEFAULT
ALTER VIEW [ IF EXISTS ] name OWNER TO { new_owner | CURRENT_ROLE | CURRENT_USER | SESSION_USER }
ALTER VIEW [ IF EXISTS ] name RENAME [ COLUMN ] column_name TO new_column_name
ALTER VIEW [ IF EXISTS ] name RENAME TO new_name
ALTER VIEW [ IF EXISTS ] name SET SCHEMA new_schema
ALTER VIEW [ IF EXISTS ] name SET ( view_option_name [= view_option_value] [, ... ] )
ALTER VIEW [ IF EXISTS ] name RESET ( view_option_name [, ... ] )

Description

ALTER VIEW changes various auxiliary properties of a view. (If you want to modify the view's defining query, use CREATE OR REPLACE VIEW.) You must own the view to use ALTER VIEW. To change a view'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 view's schema.

Parameters

name

The name (optionally schema-qualified) of an existing view.

column_name

Name of an existing column, or new name for an existing column.

IF EXISTS

Don't throw an error if the view doesn't exist. A notice is issued in this case.

SET/DROP DEFAULT

These forms set or remove the default value for a column. The default value for a view column is substituted into any INSERT or UPDATE command where the target is the view.

new_owner

The user name of the new owner of the view.

new_name

The new name for the view.

new_schema

The new schema for the view.

SET ( view_option_name [= view_option_value] [, ... ] )

Sets a view option. The following are supported options:

  • check_option (enum) - Changes the check option of the view. The value must be local or cascaded.

  • security_barrier (boolean) - Changes the security-barrier property of the view.

  • security_invoker (boolean) - Changes the security-invoker property of the view.

RESET ( view_option_name [, ... ] )

Resets a view option to its default value.

Examples

Renaming the view foo to bar:

ALTER VIEW foo RENAME TO bar;

Attaching a default column value to an updatable view:

CREATE TABLE base_table (id int, ts timestamptz);
CREATE VIEW a_view AS SELECT * FROM base_table;
ALTER VIEW a_view ALTER COLUMN ts SET DEFAULT now();
INSERT INTO base_table(id) VALUES(1);  -- ts will receive a NULL
INSERT INTO a_view(id) VALUES(2);  -- ts will receive the current time

Compatibility

ALTER VIEW is a PostgreSQL extension of the SQL standard that Aurora DSQL supports.