ALTER MATERIALIZED VIEW

Description

Alters multiple auxiliary attributes of an existing materialized view.

Statements and actions that can be used for ALTER MATERIALIZED VIEW are a subset of ALTER TABLE and have the same meaning when used for materialized views. For details, see ALTER TABLE.

Precautions

Only the owner of a materialized view or a system administrator has the ALTER MATERIALIZED VIEW permission.
The materialized view structure cannot be modified.

Syntax

Alter the owner of the materialized view.

ALTER MATERIALIZED VIEW [ IF EXISTS ] mv_name
    OWNER TO new_owner;

Modify the column of a materialized view.

ALTER MATERIALIZED VIEW [ IF EXISTS ] mv_name
    RENAME [ COLUMN ] column_name TO new_column_name;

Rename a materialized view.

ALTER MATERIALIZED VIEW [ IF EXISTS ] mv_name
    RENAME TO new_name;

Parameters

mv_name
Specifies the name of an existing materialized view, which can be schema-qualified.

Value range: a string that complies with the Identifier Naming Conventions.
column_name
Specifies the name of a new or existing column.

Value range: a string that complies with the Identifier Naming Conventions.
new_column_name
Specifies the new name of an existing column.
new_owner
Specifies the username of the new owner of a materialized view.
new_name
Specifies the new name of a materialized view.

Examples

-- Create a table.
openGauss=# CREATE TABLE my_table (c1 int, c2 int) WITH(STORAGE_TYPE=ASTORE);

-- Create a complete-refresh materialized view.
openGauss=# CREATE MATERIALIZED VIEW foo AS SELECT * FROM my_table;

-- Rename the materialized view foo to bar.
openGauss=# ALTER MATERIALIZED VIEW foo RENAME TO bar;

-- Drop a complete-refresh materialized view.
openGauss=# DROP MATERIALIZED VIEW bar;

-- Drop the my_table table.
openGauss=# DROP TABLE my_table;