---
name: "create_table_as"
section: "7l"
platform: "linux"
package: "postgresql-client"
version: "7.2.1-2woody8"
release: "Debian 3.0 (Woody)"
platforms: ["linux"]
url: "https://new.carta.tech/create_table_as/7l"
---

# create\_table\_as(7l)

create a new table from the results of a query

## 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 the underlying **SELECT** statements whenever it is queried.

## PARAMETERS

- **\[LOCAL\] TEMPORARY or \[LOCAL\] TEMP**

  If specified, the table is created as a temporary table. Temporary tables are automatically dropped at the end of a session. Existing persistent tables with the same name are not visible to the current session while the temporary table exists. Any indexes created on a temporary table are automatically temporary as well.

  The LOCAL word is optional.

- *table\_name*

  The name of the new table to be created. This table must not already exist. However, a temporary table can be created that has the same name as an existing permanent table.

- *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**(l) for a description of the allowed syntax.

## DIAGNOSTICS

Refer to **create\_table**(l) and **select**(l) for a summary of possible output messages.

## NOTES

This command is functionally equivalent to **select\_into**(l), 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**(l), **create\_view**(l), **select**(l), **select\_into**(l)