GSP
Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Support
Contact Us
Online Help
Handbooks
Domain Status
Man Pages

FAQ
Virtual Servers
Pricing
Billing
Technical

Network
Facilities
Connectivity
Topology Map

Miscellaneous
Server Agreement
Year 2038
Credits
 

USA Flag

 

 

Man Pages


Manual Reference Pages  -  ALTER_VIEW (7)

.ds Aq ’

NAME

ALTER_VIEW - change the definition of a view

CONTENTS

SYNOPSIS

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_USER | SESSION_USER }
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 views defining query, use CREATE OR REPLACE VIEW.)

You must own the view to use ALTER VIEW. To change a views 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 views schema. (These restrictions enforce that altering the owner doesnt do anything you couldnt do by dropping and recreating the view. However, a superuser can alter ownership of any view anyway.)

PARAMETERS

name

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

IF EXISTS

Do not throw an error if the view does not exist. A notice is issued in this case.

SET/DROP DEFAULT

These forms set or remove the default value for a column. A view columns default value is substituted into any INSERT or UPDATE command whose target is the view, before applying any rules or triggers for the view. The views default will therefore take precedence over any default values from underlying relations.

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] [, ... ] )
RESET ( view_option_name [, ... ] )

Sets or resets a view option. Currently supported options are:

check_option (string)

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. The value must be Boolean value, such as true or false.

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:

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

COMPATIBILITY

ALTER VIEW is a PostgreSQL extension of the SQL standard.

SEE ALSO

CREATE VIEW (CREATE_VIEW(7)), DROP VIEW (DROP_VIEW(7))
Search for    or go to Top of page |  Section 7 |  Main Index


PostgreSQL 9.5.2 ALTER VIEW (7) 2016

Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with manServer 1.07.