PostgreSQL 8.1.4 Documentation
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# TRUNCATE

## Name

TRUNCATE -- empty a table or set of tables

## Synopsis

    TRUNCATE [ TABLE ] name [, ...]

## Description

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

## Parameters

`name`

  The name (optionally schema-qualified) of a table to be truncated.

## Notes

Only the owner of a table may `TRUNCATE` it.

`TRUNCATE` cannot be used on a table that has foreign-key references from other tables, unless all such tables are also truncated in the same command. Checking validity in such cases would require table scans, and the whole point is not to do one.

`TRUNCATE` will not run any user-defined `ON DELETE` triggers that might exist for the tables.

## Examples

Truncate the tables `bigtable` and `fattable`:

    TRUNCATE TABLE bigtable, fattable;

## Compatibility

There is no `TRUNCATE` command in the SQL standard.

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