CREATE MATERIALIZED VIEW(PostgreSQL 15.7 DocumentatCREATE MATERIALIZED VIEW(7)
NAME
CREATE_MATERIALIZED_VIEW - define a new materialized view
SYNOPSIS
CREATE MATERIALIZED VIEW [ IF NOT EXISTS ] table_name
[ (column_name [, ...] ) ]
[ USING method ]
[ WITH ( storage_parameter [= value] [, ... ] ) ]
[ TABLESPACE tablespace_name ]
AS query
[ WITH [ NO ] DATA ]
DESCRIPTION
CREATE MATERIALIZED VIEW defines a materialized view of a query. The
query is executed and used to populate the view at the time the command
is issued (unless WITH NO DATA is used) and may be refreshed later
using REFRESH MATERIALIZED VIEW.
CREATE MATERIALIZED VIEW is similar to CREATE TABLE AS, except that it
also remembers the query used to initialize the view, so that it can be
refreshed later upon demand. A materialized view has many of the same
properties as a table, but there is no support for temporary
materialized views.
CREATE MATERIALIZED VIEW requires CREATE privilege on the schema used
for the materialized view.
PARAMETERS
IF NOT EXISTS
Do not throw an error if a materialized view with the same name
already exists. A notice is issued in this case. Note that there is
no guarantee that the existing materialized view is anything like
the one that would have been created.
table_name
The name (optionally schema-qualified) of the materialized view to
be created. The name must be distinct from the name of any other
relation (table, sequence, index, view, materialized view, or
foreign table) in the same schema.
column_name
The name of a column in the new materialized view. If column names
are not provided, they are taken from the output column names of
the query.
USING method
This optional clause specifies the table access method to use to
store the contents for the new materialized view; the method needs
be an access method of type TABLE. See Chapter 63 for more
information. If this option is not specified, the default table
access method is chosen for the new materialized view. See
default_table_access_method for more information.
WITH ( storage_parameter [= value] [, ... ] )
This clause specifies optional storage parameters for the new
materialized view; see Storage Parameters in the CREATE TABLE
(CREATE_TABLE(7)) documentation for more information. All
parameters supported for CREATE TABLE are also supported for CREATE
MATERIALIZED VIEW. See CREATE TABLE (CREATE_TABLE(7)) for more
information.
TABLESPACE tablespace_name
The tablespace_name is the name of the tablespace in which the new
materialized view is to be created. If not specified,
default_tablespace is consulted.
query
A SELECT, TABLE, or VALUES command. This query will run within a
security-restricted operation; in particular, calls to functions
that themselves create temporary tables will fail.
WITH [ NO ] DATA
This clause specifies whether or not the materialized view should
be populated at creation time. If not, the materialized view will
be flagged as unscannable and cannot be queried until REFRESH
MATERIALIZED VIEW is used.
COMPATIBILITY
CREATE MATERIALIZED VIEW is a PostgreSQL extension.
SEE ALSO
ALTER MATERIALIZED VIEW (ALTER_MATERIALIZED_VIEW(7)), CREATE TABLE AS
(CREATE_TABLE_AS(7)), CREATE VIEW (CREATE_VIEW(7)), DROP MATERIALIZED
VIEW (DROP_MATERIALIZED_VIEW(7)), REFRESH MATERIALIZED VIEW
(REFRESH_MATERIALIZED_VIEW(7))
PostgreSQL 15.7 2024 CREATE MATERIALIZED VIEW(7)
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