alter_view(7) - BetterMan

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NAME

ALTER_VIEW - change the definition of a view

SYNOPSIS

bash

ALTER VIEW [ IF EXISTS ] \nname\n ALTER [ COLUMN ] \ncolumn_name\n SET DEFAULT \nexpression\n
ALTER VIEW [ IF EXISTS ] \nname\n ALTER [ COLUMN ] \ncolumn_name\n DROP DEFAULT
ALTER VIEW [ IF EXISTS ] \nname\n OWNER TO { \nnew_owner\n | CURRENT_ROLE | CURRENT_USER | SESSION_USER }
ALTER VIEW [ IF EXISTS ] \nname\n RENAME [ COLUMN ] \ncolumn_name\n TO \nnew_column_name\n
ALTER VIEW [ IF EXISTS ] \nname\n RENAME TO \nnew_name\n
ALTER VIEW [ IF EXISTS ] \nname\n SET SCHEMA \nnew_schema\n
ALTER VIEW [ IF EXISTS ] \nname\n SET ( \nview_option_name\n [= \nview_option_value\n] [, ... ] )
ALTER VIEW [ IF EXISTS ] \nname\n RESET ( \nview_option_name\n [, ... ] )

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. (These restrictions enforce that altering the owner doesn't do anything you couldn't do by dropping and recreating the view. However, a superuser can alter ownership of any view anyway.)

PARAMETERS

name

column_name

new_column_name

IF EXISTS

SET/DROP DEFAULT

new_owner

new_name

new_schema

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

check_option (enum)

security_barrier (boolean)

security_invoker (boolean)

NOTES

For historical reasons, ALTER TABLE can be used with views too; but the only variants of ALTER TABLE that are allowed with views are equivalent to the ones shown above.

EXAMPLES

To rename the view foo to bar:

bash

ALTER VIEW foo RENAME TO bar;

To attach a default column value to an updatable view:

bash

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.