Changes properties of a view.
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> 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> [, ... ] )
ALTER VIEW changes various auxiliary properties of a view. (If you want to modify the view's defining query, use
CREATE OR REPLACE VIEW.
To run this command you must be the owner of the view. To change a view's schema you must also have
CREATE privilege on the new schema. To alter the owner, you must also be a direct or indirect member of the new owning role, and that role must have
CREATE privilege on the view's schema. These restrictions enforce that altering the owner does not do anything you could not do by dropping and recreating the view. However, a superuser can alter ownership of any view.
UPDATEcommand whose target is the view, before applying any rules or triggers for the view. The view's default will therefore take precedence over any default values from underlying relations.
SET ( view\_option\_name [= view\_option\_value] [, ... ] )
RESET ( view\_option\_name [, ... ] )
Sets or resets a view option. Currently supported options are:
For historical reasons,
ALTER TABLE can be used with views, too; however, the only variants of
ALTER TABLE that are allowed with views are equivalent to the statements shown above.
Rename the view
ALTER VIEW myview RENAME TO newview;
To rename the view
ALTER VIEW foo RENAME TO bar;
To attach 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
ALTER VIEW is a Greenplum Database extension of the SQL standard.
Parent topic: SQL Commands