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<!--
$Header: /cvsroot/pgsql/doc/src/sgml/ref/reindex.sgml,v 1.3 2000/10/05 19:48:18 momjian Exp $
Postgres documentation
-->
<refentry id="SQL-REINDEX">
<refmeta>
<refentrytitle id="SQL-REINDEX-TITLE">
REINDEX
</refentrytitle>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>
REINDEX
</refname>
<refpurpose>
Recover corrupted system indexes under stand-alone Postgres
</refpurpose>
</refnamediv>
<refsynopsisdiv>
<refsynopsisdivinfo>
<date>2000-03-30</date>
</refsynopsisdivinfo>
<synopsis>
REINDEX { TABLE | DATABASE | INDEX } <replaceable class="PARAMETER">name</replaceable> [ FORCE ]
</synopsis>
<refsect2 id="R2-SQL-REINDEX-1">
<refsect2info>
<date>2000-03-30</date>
</refsect2info>
<title>
Inputs
</title>
<para>
<variablelist>
<varlistentry>
<term>TABLE</term>
<listitem>
<para>
Recreate all indexes of a specified table.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>DATABASE</term>
<listitem>
<para>
Recreate all system indexes of a specified database.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>INDEX</term>
<listitem>
<para>
Recreate a specified index.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="PARAMETER">name</replaceable></term>
<listitem>
<para>
The name of the specific table/database/index to be be reindexed.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>FORCE</term>
<listitem>
<para>
Recreate indexes forcedly. Without this keyword REINDEX does
nothing unless target indexes are invalidated.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect2>
<refsect2 id="R2-SQL-REINDEX-2">
<refsect2info>
<date>2000-03-30</date>
</refsect2info>
<title>
Outputs
</title>
<para>
<variablelist>
<varlistentry>
<term><computeroutput>
REINDEX
</computeroutput></term>
<listitem>
<para>
Message returned if the table is successfully reindexed.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect2>
</refsynopsisdiv>
<refsect1 id="R1-SQL-REINDEX-1">
<refsect1info>
<date>2000-03-30</date>
</refsect1info>
<title>
Description
</title>
<para>
<command>REINDEX</command> is used to recover corrupted system indexes.
In order to run REINDEX command, postmaster must be shut down and
stand-alone Postgres should be started instead with options -O and
-P (an option to ignore system indexes). Note that we couldn't rely
on system indexes for the recovery of system indexes.
</para>
</refsect1>
<refsect1 id="R1-SQL-REINDEX-2">
<title>
Usage
</title>
<para>
Recreate the table <literal>mytable</literal>:
<programlisting>
REINDEX TABLE mytable;
</programlisting>
</para>
<para>
Some more examples:
<programlisting>
REINDEX DATABASE my_database FORCE;
REINDEX INDEX my_index;
</programlisting>
</para>
</refsect1>
<refsect1 id="R1-SQL-REINDEX-3">
<title>
Compatibility
</title>
<refsect2 id="R2-SQL-REINDEX-4">
<refsect2info>
<date>2000-03-30</date>
</refsect2info>
<title>
SQL92
</title>
<para>
There is no <command>REINDEX</command> in <acronym>SQL92</acronym>.
</para>
</refsect2>
</refsect1>
</refentry>
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