jammy (7) SELECT_INTO.7.gz

NAME

       SELECT_INTO - define a new table from the results of a query

SYNOPSIS

       [ WITH [ RECURSIVE ] with_query [, ...] ]
       SELECT [ ALL | DISTINCT [ ON ( expression [, ...] ) ] ]
           [ { * | expression [ [ AS ] output_name ] } [, ...] ]
           INTO [ TEMPORARY | TEMP | UNLOGGED ] [ TABLE ] new_table
           [ FROM from_item [, ...] ]
           [ WHERE condition ]
           [ GROUP BY expression [, ...] ]
           [ HAVING condition ]
           [ WINDOW window_name AS ( window_definition ) [, ...] ]
           [ { UNION | INTERSECT | EXCEPT } [ ALL | DISTINCT ] select ]
           [ ORDER BY expression [ ASC | DESC | USING operator ] [ NULLS { FIRST | LAST } ] [, ...] ]
           [ LIMIT { count | ALL } ]
           [ OFFSET start [ ROW | ROWS ] ]
           [ FETCH { FIRST | NEXT } [ count ] { ROW | ROWS } ONLY ]
           [ 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(7)) for
           details.

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

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

       All other parameters are described in detail under SELECT(7).

NOTES

       CREATE TABLE AS 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.

       In contrast to CREATE TABLE AS, SELECT INTO does not allow specifying properties like a table's access
       method with USING method or the table's tablespace with TABLESPACE tablespace_name. Use CREATE TABLE AS
       if necessary. Therefore, the default table access method is chosen for the new table. See
       default_table_access_method for more information.

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 Chapter 36) and PL/pgSQL
       (see Chapter 43). The PostgreSQL usage of SELECT INTO to represent table creation is historical. Some
       other SQL implementations also use SELECT INTO in this way (but most SQL implementations support CREATE
       TABLE AS instead). Apart from such compatibility considerations, it is best to use CREATE TABLE AS for
       this purpose in new code.

SEE ALSO

       CREATE TABLE AS (CREATE_TABLE_AS(7))