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SELECT
NAME
SELECT INTO - define a new table from the results of a query
SYNOPSIS
SELECT [ ALL | DISTINCT [ ON ( expression [, ...] ) ] ]
* | expression [ AS output_name ] [, ...]
INTO [ TEMPORARY | TEMP ] [ TABLE ] new_table
[ FROM from_item [, ...] ]
[ WHERE condition ]
[ GROUP BY expression [, ...] ]
[ HAVING condition [, ...] ]
[ { UNION | INTERSECT | EXCEPT } [ ALL ] select ]
[ ORDER BY expression [ ASC | DESC | USING operator ] [, ...] ]
[ LIMIT { count | ALL } ]
[ OFFSET start ]
[ FOR { UPDATE | SHARE } [ OF table_name [, ...] ] [ NOWAIT ] [...] ]
DESCRIPTION
SELECT INTO creates a new table and fills it with data computed by a query.
The data is not returned to the client, as it is with a normal SELECT. The
new table's columns have the names and data types associated with the
output columns of the SELECT.
PARAMETERS
TEMPORARY or TEMP
If specified, the table is created as a temporary table. Refer to
CREATE TABLE [create_table(5)] for details.
new_table
The name (optionally schema-qualified) of the table to be created.
All other parameters are described in detail under SELECT [select(5)].
NOTES
CREATE TABLE AS [create_table_as(5)] is functionally similar to SELECT
INTO. CREATE TABLE AS is the recommended syntax, since this form of SELECT
INTO is not available in ECPG or PL/pgSQL, because they interpret the INTO
clause differently. Furthermore, CREATE TABLE AS offers a superset of the
functionality provided by SELECT INTO.
Prior to PostgreSQL 8.1, the table created by SELECT INTO included OIDs by
default. In PostgreSQL 8.1, this is not the case - to include OIDs in the
new table, the default_with_oids configuration variable must be enabled.
Alternatively, CREATE TABLE AS can be used with the WITH OIDS clause.
EXAMPLES
Create a new table films_recent consisting of only recent entries from the
table films:
SELECT * INTO films_recent FROM films WHERE date_prod >= '2002-01-01';
COMPATIBILITY
The SQL standard uses SELECT INTO to represent selecting values into scalar
variables of a host program, rather than creating a new table. This indeed
is the usage found in ECPG (see in the documentation) and PL/pgSQL (see in
the documentation). The PostgreSQL usage of SELECT INTO to represent table
creation is historical. It is best to use CREATE TABLE AS for this purpose
in new code.
SEE ALSO
CREATE TABLE AS [create_table_as(5)]
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