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CREATE
NAME
CREATE TABLE AS - create a new table from the results of a query
SYNOPSIS
CREATE [ [ LOCAL ] { TEMPORARY | TEMP } ] TABLE table_name [ (column_name [, ...] ) ]
AS query
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
[LOCAL] TEMPORARY or [LOCAL] TEMP
If specified, the table is created as a temporary table. Refer to
CREATE TABLE [create_table(5)] 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. Multiple column names can be
specified using a comma-delimited list of column names. If column
names are not provided, they are taken from the output column names of
the query.
query
A query statement (that is, a SELECT command). Refer to SELECT
[select(5)] for a description of the allowed syntax.
DIAGNOSTICS
Refer to CREATE TABLE [create_table(5)] and SELECT [select(5)] for a
summary of possible output messages.
NOTES
This command is functionally equivalent to SELECT INTO [select_into(5)],
but it is preferred since it is less likely to be confused with other uses
of the SELECT ... INTO syntax.
COMPATIBILITY
This command is modeled after an Oracle feature. There is no command with
equivalent functionality in SQL92 or SQL99. However, a combination of
CREATE TABLE and INSERT ... SELECT can accomplish the same thing with
little more effort.
HISTORY
The CREATE TABLE AS command has been available since PostgreSQL 6.3.
SEE ALSO
CREATE TABLE [create_table(5)], CREATE VIEW [create_view(l)], SELECT
[select(l)], SELECT INTO [select_into(l)]
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Index for Section TABLE |
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Alphabetical listing for C |
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Top of page |
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