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<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/alter_conversion.sgml,v 1.4 2003/11/29 19:51:38 pgsql Exp $
PostgreSQL documentation
-->
<refentry id="SQL-ALTERCONVERSION">
<refmeta>
<refentrytitle id="SQL-ALTERCONVERSION-TITLE">ALTER CONVERSION</refentrytitle>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>ALTER CONVERSION</refname>
<refpurpose>change the definition of a conversion</refpurpose>
</refnamediv>
<indexterm zone="sql-alterconversion">
<primary>ALTER CONVERSION</primary>
</indexterm>
<refsynopsisdiv>
<synopsis>
ALTER CONVERSION <replaceable>name</replaceable> RENAME TO <replaceable>newname</replaceable>
</synopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>
<command>ALTER CONVERSION</command> changes the definition of a
conversion. The only currently available functionality is to rename the
conversion.
</para>
</refsect1>
<refsect1>
<title>Parameters</title>
<variablelist>
<varlistentry>
<term><replaceable class="parameter">name</replaceable></term>
<listitem>
<para>
The name (optionally schema-qualified) of an existing conversion.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">newname</replaceable></term>
<listitem>
<para>
The new name of the conversion.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Examples</title>
<para>
To rename the conversion <literal>iso_8859_1_to_utf_8</literal> to
<literal>latin1_to_unicode</literal>:
<programlisting>
ALTER CONVERSION iso_8859_1_to_utf_8 RENAME TO latin1_to_unicode;
</programlisting>
</para>
</refsect1>
<refsect1>
<title>Compatibility</title>
<para>
There is no <command>ALTER CONVERSION</command> statement in the SQL
standard.
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<simplelist type="inline">
<member><xref linkend="sql-createconversion" endterm="sql-createconversion-title"></member>
<member><xref linkend="sql-dropconversion" endterm="sql-dropconversion-title"></member>
</simplelist>
</refsect1>
</refentry>
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