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SELECT INTO

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    [ FROMfrom_item [, ...] ]    [ WHEREcondition ]    [ GROUP BYexpression [, ...] ]    [ HAVINGcondition ]    [ WINDOWwindow_name AS (window_definition ) [, ...] ]    [ { UNION | INTERSECT | EXCEPT } [ ALL | DISTINCT ]select ]    [ ORDER BYexpression [ ASC | DESC | USINGoperator ] [ NULLS { FIRST | LAST } ] [, ...] ]    [ LIMIT {count | ALL } ]    [ OFFSETstart [ ROW | ROWS ] ]    [ FETCH { FIRST | NEXT } [count ] { ROW | ROWS } ONLY ]    [ FOR { UPDATE | SHARE } [ OFtable_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 normalSELECT. The new table's columns have the names and data types associated with the output columns of theSELECT.

Parameters

All other parameters are described in detail underSELECT.

Notes

CREATE TABLE AS is functionally similar toSELECT INTO.CREATE TABLE AS is the recommended syntax, since this form ofSELECT INTO is not available inECPG orPL/pgSQL, because they interpret theINTO clause differently. Furthermore,CREATE TABLE AS offers a superset of the functionality provided bySELECT INTO.

In contrast toCREATE TABLE AS,SELECT INTO does not allow specifying properties like a table's access method withUSINGmethod or the table's tablespace withTABLESPACEtablespace_name. UseCREATE TABLE AS if necessary. Therefore, the default table access method is chosen for the new table. Seedefault_table_access_method for more information.

Examples

Create a new tablefilms_recent consisting of only recent entries from the tablefilms:

SELECT * INTO films_recent FROM films WHERE date_prod >= '2002-01-01';

Compatibility

The SQL standard usesSELECT INTO to represent selecting values into scalar variables of a host program, rather than creating a new table. This indeed is the usage found inECPG (seeChapter 34) andPL/pgSQL (seeChapter 41). ThePostgres Pro usage ofSELECT INTO to represent table creation is historical. Some other SQL implementations also useSELECT INTO in this way (but most SQL implementations supportCREATE TABLE AS instead). Apart from such compatibility considerations, it is best to useCREATE TABLE AS for this purpose in new code.

See Also