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CREATE TABLE AS(7)	PostgreSQL 9.6.3 Documentation	    CREATE TABLE AS(7)

NAME
       CREATE_TABLE_AS - define	a new table from the results of	a query

SYNOPSIS
       CREATE [	[ GLOBAL | LOCAL ] { TEMPORARY | TEMP }	| UNLOGGED ] TABLE [ IF	NOT EXISTS ] table_name
	   [ (column_name [, ...] ) ]
	   [ WITH ( storage_parameter [= value]	[, ... ] ) | WITH OIDS | WITHOUT OIDS ]
	   [ ON	COMMIT { PRESERVE ROWS | DELETE	ROWS | DROP } ]
	   [ TABLESPACE	tablespace_name	]
	   AS query
	   [ WITH [ NO ] DATA ]

DESCRIPTION
       CREATE TABLE AS creates a table and fills it with data computed by a
       SELECT command. The table columns have the names	and data types
       associated with the output columns of the SELECT	(except	that you can
       override	the column names by giving an explicit list of new column
       names).

       CREATE TABLE AS bears some resemblance to creating a view, but it is
       really quite different: it creates a new	table and evaluates the	query
       just once to fill the new table initially. The new table	will not track
       subsequent changes to the source	tables of the query. In	contrast, a
       view re-evaluates its defining SELECT statement whenever	it is queried.

PARAMETERS
       GLOBAL or LOCAL
	   Ignored for compatibility. Use of these keywords is deprecated;
	   refer to CREATE TABLE (CREATE_TABLE(7)) for details.

       TEMPORARY or TEMP
	   If specified, the table is created as a temporary table. Refer to
	   CREATE TABLE	(CREATE_TABLE(7)) for details.

       UNLOGGED
	   If specified, the table is created as an unlogged table. Refer to
	   CREATE TABLE	(CREATE_TABLE(7)) for details.

       IF NOT EXISTS
	   Do not throw	an error if a relation with the	same name already
	   exists. A notice is issued in this case. Refer to CREATE TABLE
	   (CREATE_TABLE(7)) for details.

       table_name
	   The name (optionally	schema-qualified) of the table to be created.

       column_name
	   The name of a column	in the new table. If column names are not
	   provided, they are taken from the output column names of the	query.

       WITH ( storage_parameter	[= value] [, ... ] )
	   This	clause specifies optional storage parameters for the new
	   table; see Storage Parameters for more information. The WITH	clause
	   can also include OIDS=TRUE (or just OIDS) to	specify	that rows of
	   the new table should	have OIDs (object identifiers) assigned	to
	   them, or OIDS=FALSE to specify that the rows	should not have	OIDs.
	   See CREATE TABLE (CREATE_TABLE(7)) for more information.

       WITH OIDS
       WITHOUT OIDS
	   These are obsolescent syntaxes equivalent to	WITH (OIDS) and	WITH
	   (OIDS=FALSE), respectively. If you wish to give both	an OIDS
	   setting and storage parameters, you must use	the WITH ( ... )
	   syntax; see above.

       ON COMMIT
	   The behavior	of temporary tables at the end of a transaction	block
	   can be controlled using ON COMMIT. The three	options	are:

	   PRESERVE ROWS
	       No special action is taken at the ends of transactions. This is
	       the default behavior.

	   DELETE ROWS
	       All rows	in the temporary table will be deleted at the end of
	       each transaction	block. Essentially, an automatic TRUNCATE(7)
	       is done at each commit.

	   DROP
	       The temporary table will	be dropped at the end of the current
	       transaction block.

       TABLESPACE tablespace_name
	   The tablespace_name is the name of the tablespace in	which the new
	   table is to be created. If not specified, default_tablespace	is
	   consulted, or temp_tablespaces if the table is temporary.

       query
	   A SELECT(7),	TABLE, or VALUES(7) command, or	an EXECUTE(7) command
	   that	runs a prepared	SELECT,	TABLE, or VALUES query.

       WITH [ NO ] DATA
	   This	clause specifies whether or not	the data produced by the query
	   should be copied into the new table.	If not,	only the table
	   structure is	copied.	The default is to copy the data.

NOTES
       This command is functionally similar to SELECT INTO (SELECT_INTO(7)),
       but it is preferred since it is less likely to be confused with other
       uses of the SELECT INTO syntax. Furthermore, CREATE TABLE AS offers a
       superset	of the functionality offered by	SELECT INTO.

       The CREATE TABLE	AS command allows the user to explicitly specify
       whether OIDs should be included.	If the presence	of OIDs	is not
       explicitly specified, the default_with_oids configuration variable is
       used.

EXAMPLES
       Create a	new table films_recent consisting of only recent entries from
       the table films:

	   CREATE TABLE	films_recent AS
	     SELECT * FROM films WHERE date_prod >= '2002-01-01';

       To copy a table completely, the short form using	the TABLE command can
       also be used:

	   CREATE TABLE	films2 AS
	     TABLE films;

       Create a	new temporary table films_recent, consisting of	only recent
       entries from the	table films, using a prepared statement. The new table
       has OIDs	and will be dropped at commit:

	   PREPARE recentfilms(date) AS
	     SELECT * FROM films WHERE date_prod > $1;
	   CREATE TEMP TABLE films_recent WITH (OIDS) ON COMMIT	DROP AS
	     EXECUTE recentfilms('2002-01-01');

COMPATIBILITY
       CREATE TABLE AS conforms	to the SQL standard. The following are
       nonstandard extensions:

       o   The standard	requires parentheses around the	subquery clause; in
	   PostgreSQL, these parentheses are optional.

       o   In the standard, the	WITH [ NO ] DATA clause	is required; in
	   PostgreSQL it is optional.

       o   PostgreSQL handles temporary	tables in a way	rather different from
	   the standard; see CREATE TABLE (CREATE_TABLE(7)) for	details.

       o   The WITH clause is a	PostgreSQL extension; neither storage
	   parameters nor OIDs are in the standard.

       o   The PostgreSQL concept of tablespaces is not	part of	the standard.
	   Hence, the clause TABLESPACE	is an extension.

SEE ALSO
       CREATE MATERIALIZED VIEW	(CREATE_MATERIALIZED_VIEW(7)), CREATE TABLE
       (CREATE_TABLE(7)), EXECUTE(7), SELECT(7), SELECT	INTO (SELECT_INTO(7)),
       VALUES(7)

PostgreSQL 9.6.3		     2017		    CREATE TABLE AS(7)

NAME | SYNOPSIS | DESCRIPTION | PARAMETERS | NOTES | EXAMPLES | COMPATIBILITY | SEE ALSO

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