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CREATE MATERIALIZED VIEW(7) PostgreSQL 9.5.0 Documentation
CREATE_MATERIALIZED_VIEW - define a new materialized view
CREATE MATERIALIZED VIEW [ IF NOT EXISTS ] table_name
[ (column_name [, ...] ) ]
[ WITH ( storage_parameter [= value] [, ... ] ) ]
[ TABLESPACE tablespace_name ]
[ WITH [ NO ] DATA ]
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 or automatic generation of OIDs.
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.
The name (optionally schema-qualified) of the materialized view to
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
WITH ( storage_parameter [= value] [, ... ] )
This clause specifies optional storage parameters for the new
materialized view; see Storage Parameters for more information. All
parameters supported for CREATE TABLE are also supported for CREATE
MATERIALIZED VIEW with the exception of OIDS. See CREATE TABLE
(CREATE_TABLE(7)) for more information.
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.
A SELECT(7), TABLE, or VALUES(7) 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.
CREATE MATERIALIZED VIEW is a PostgreSQL extension.
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
PostgreSQL 9.5.0 2016 CREATE MATERIALIZED VIEW(7)