This page in other versions: 9.0 / 9.1 / 9.2 / 9.3  |  Development versions: devel / 9.4  |  Unsupported versions: 7.1 / 7.2 / 7.3 / 7.4 / 8.0 / 8.1 / 8.2 / 8.3 / 8.4

TRUNCATE

Name

TRUNCATE  --  empty a table

Synopsis

TRUNCATE [ TABLE ] name
  

Inputs

name

The name of the table to be truncated.

Outputs

TRUNCATE

Message returned if the table is successfully truncated.

Description

TRUNCATE quickly removes all rows from a table. It has the same effect as an unqualified DELETE but since it does not actually scan the table it is faster. This is most useful on large tables.

TRUNCATE cannot be executed inside a transaction block (BEGIN/COMMIT pair), because there is no way to roll it back.

Usage

Truncate the table bigtable:

TRUNCATE TABLE bigtable;
   

Compatibility

SQL92

There is no TRUNCATE in SQL92.

Privacy Policy | About PostgreSQL
Copyright © 1996-2014 The PostgreSQL Global Development Group