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f0811a74b3
GUC support. It's now possible to set datestyle, timezone, and client_encoding from postgresql.conf and per-database or per-user settings. Also, implement rollback of SET commands that occur in a transaction that later fails. Create a SET LOCAL var = value syntax that sets the variable only for the duration of the current transaction. All per previous discussions in pghackers.
123 lines
2.9 KiB
Plaintext
123 lines
2.9 KiB
Plaintext
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$Header: /cvsroot/pgsql/doc/src/sgml/ref/reset.sgml,v 1.14 2002/05/17 01:19:16 tgl Exp $
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PostgreSQL documentation
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-->
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<refentry id="SQL-RESET">
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<refmeta>
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<refentrytitle id="SQL-RESET-TITLE">RESET</refentrytitle>
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<refmiscinfo>SQL - Language Statements</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>RESET</refname>
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<refpurpose>restore the value of a run-time parameter to a default value</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<synopsis>
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RESET <replaceable class="PARAMETER">variable</replaceable>
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</synopsis>
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<synopsis>
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RESET ALL
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</synopsis>
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<refsect2 id="R2-SQL-RESET-1">
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<title>Inputs</title>
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<para>
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<variablelist>
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<varlistentry>
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<term><replaceable class="PARAMETER">variable</replaceable></term>
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<listitem>
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<para>
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The name of a run-time parameter. See <xref
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linkend="sql-set" endterm="sql-set-title"> for a list.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>ALL</term>
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<listitem>
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<para>
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Resets all settable run-time parameters to default values.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect2>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>
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<command>RESET</command> restores run-time parameters to their
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default values. Refer to
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<xref linkend="sql-set" endterm="sql-set-title">
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for details. <command>RESET</command> is an alternate spelling for
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<synopsis>
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SET <replaceable class="parameter">variable</replaceable> TO DEFAULT
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</synopsis>
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The default value is defined as the value that the variable would
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have had, had no <command>SET</> ever been issued for it in the
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current session. The actual source of this value might be a
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compiled-in default, the postmaster's configuration file or command-line
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switches, or per-database or per-user default settings. See the
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<citetitle>Administrator's Guide</citetitle> for details.
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</para>
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</refsect1>
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<refsect1>
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<title>Diagnostics</title>
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<para>
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See under the <xref linkend="sql-set"
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endterm="sql-set-title"> command.
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</para>
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</refsect1>
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<refsect1>
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<title>Examples</title>
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<para>
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Set DateStyle to its default value:
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<screen>
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RESET DateStyle;
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</screen>
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</para>
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<para>
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Set Geqo to its default value:
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<screen>
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RESET GEQO;
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</screen>
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</para>
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</refsect1>
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<refsect1>
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<title>Compatibility</title>
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<para>
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<command>RESET</command> is a <productname>PostgreSQL</productname> extension.
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</para>
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</refsect1>
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</refentry>
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Local variables:
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sgml-parent-document:nil
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sgml-default-dtd-file:"../reference.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:"/usr/lib/sgml/catalog"
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sgml-local-ecat-files:nil
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End:
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-->
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