mirror of
https://github.com/postgres/postgres.git
synced 2025-11-05 00:03:54 -05:00
90 lines
1.9 KiB
Plaintext
90 lines
1.9 KiB
Plaintext
<!--
|
|
$Header: /cvsroot/pgsql/doc/src/sgml/ref/truncate.sgml,v 1.13 2003/09/12 00:12:47 tgl Exp $
|
|
PostgreSQL documentation
|
|
-->
|
|
|
|
<refentry id="SQL-TRUNCATE">
|
|
<refmeta>
|
|
<refentrytitle id="SQL-TRUNCATE-TITLE">TRUNCATE</refentrytitle>
|
|
<refmiscinfo>SQL - Language Statements</refmiscinfo>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>TRUNCATE</refname>
|
|
<refpurpose>empty a table</refpurpose>
|
|
</refnamediv>
|
|
|
|
<indexterm zone="sql-truncate">
|
|
<primary>TRUNCATE</primary>
|
|
</indexterm>
|
|
|
|
<refsynopsisdiv>
|
|
<synopsis>
|
|
TRUNCATE [ TABLE ] <replaceable class="PARAMETER">name</replaceable>
|
|
</synopsis>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para>
|
|
<command>TRUNCATE</command> quickly removes all rows from a
|
|
table. It has the same effect as an unqualified
|
|
<command>DELETE</command> but since it does not actually scan the
|
|
table it is faster. This is most useful on large tables.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Parameters</title>
|
|
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><replaceable class="PARAMETER">name</replaceable></term>
|
|
<listitem>
|
|
<para>
|
|
The name (optionally schema-qualified) of the table to be truncated.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Examples</title>
|
|
|
|
<para>
|
|
Truncate the table <literal>bigtable</literal>:
|
|
|
|
<programlisting>
|
|
TRUNCATE TABLE bigtable;
|
|
</programlisting>
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Compatibility</title>
|
|
|
|
<para>
|
|
There is no <command>TRUNCATE</command> command in the SQL standard.
|
|
</para>
|
|
</refsect1>
|
|
</refentry>
|
|
|
|
<!-- Keep this comment at the end of the file
|
|
Local variables:
|
|
mode: sgml
|
|
sgml-omittag:t
|
|
sgml-shorttag:t
|
|
sgml-minimize-attributes:nil
|
|
sgml-always-quote-attributes:t
|
|
sgml-indent-step:1
|
|
sgml-indent-data:t
|
|
sgml-parent-document:nil
|
|
sgml-default-dtd-file:"../reference.ced"
|
|
sgml-exposed-tags:nil
|
|
sgml-local-catalogs:"/usr/lib/sgml/catalog"
|
|
sgml-local-ecat-files:nil
|
|
End:
|
|
-->
|