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<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/reset.sgml,v 1.26 2003/12/14 00:15:03 neilc Exp $
PostgreSQL documentation
-->
<refentry id="SQL-RESET">
<refmeta>
<refentrytitle id="SQL-RESET-TITLE">RESET</refentrytitle>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>RESET</refname>
<refpurpose>restore the value of a run-time parameter to the default value</refpurpose>
</refnamediv>
<indexterm zone="sql-reset">
<primary>RESET</primary>
</indexterm>
<refsynopsisdiv>
<synopsis>
RESET <replaceable class="PARAMETER">name</replaceable>
RESET ALL
</synopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>
<command>RESET</command> restores run-time parameters to their
default values. <command>RESET</command> is an alternative
spelling for
<synopsis>
SET <replaceable class="parameter">parameter</replaceable> TO DEFAULT
</synopsis>
Refer to <xref linkend="sql-set" endterm="sql-set-title"> for
details.
</para>
<para>
The default value is defined as the value that the parameter would
have had, had no <command>SET</> ever been issued for it in the
current session. The actual source of this value might be a
compiled-in default, the configuration file, command-line options,
or per-database or per-user default settings. See <xref
linkend="runtime-config"> for details.
</para>
<para>
See the <command>SET</> reference page for details on the
transaction behavior of <command>RESET</>.
</para>
</refsect1>
<refsect1>
<title>Parameters</title>
<variablelist>
<varlistentry>
<term><replaceable class="PARAMETER">name</replaceable></term>
<listitem>
<para>
The name of a run-time parameter. See <xref linkend="sql-set"
endterm="sql-set-title"> for a list.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>ALL</literal></term>
<listitem>
<para>
Resets all settable run-time parameters to default values.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Examples</title>
<para>
Set the <varname>geqo</> configuration variable to its default value:
<screen>
RESET geqo;
</screen>
</para>
</refsect1>
<refsect1>
<title>Compatibility</title>
<para>
<command>RESET</command> is a <productname>PostgreSQL</productname> extension.
</para>
</refsect1>
</refentry>
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sgml-omittag:nil
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