specified order.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">old_dictionary</replaceable></term>
<listitem>
<para>
The name of a text search dictionary to be replaced in the mapping.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">new_dictionary</replaceable></term>
<listitem>
<para>
The name of a text search dictionary to be substituted for
<replaceable class="parameter">old_dictionary</replaceable>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">new_name</replaceable></term>
<listitem>
<para>
The new name of the text search configuration.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">new_owner</replaceable></term>
<listitem>
<para>
The new owner of the text search configuration.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">new_schema</replaceable></term>
<listitem>
<para>
The new schema for the text search configuration.
</para>
</listitem>
</varlistentry>
</variablelist>
<para>
The <literal>ADD MAPPING FOR</literal> form installs a list of dictionaries to be
consulted for the specified token type(s); it is an error if there is
already a mapping for any of the token types.
The <literal>ALTER MAPPING FOR</literal> form does the same, but first removing
any existing mapping for those token types.
The <literal>ALTER MAPPING REPLACE</literal> forms substitute <replaceable
class="parameter">new_dictionary</replaceable> for <replaceable
class="parameter">old_dictionary</replaceable> anywhere the latter appears.
This is done for only the specified token types when <literal>FOR</literal>
appears, or for all mappings of the configuration when it doesn't.
The <literal>DROP MAPPING</literal> form removes all dictionaries for the
specified token type(s), causing tokens of those types to be ignored
by the text search configuration. It is an error if there is no mapping
for the token types, unless <literal>IF EXISTS</literal> appears.
</para>
</refsect1>
<refsect1>
<title>Examples</title>
<para>
The following example replaces the <literal>english</literal> dictionary
with the <literal>swedish</literal> dictionary anywhere that <literal>english</literal>
is used within <literal>my_config</literal>.
</para>
<programlisting>
ALTER TEXT SEARCH CONFIGURATION my_config
ALTER MAPPING REPLACE english WITH swedish;
</programlisting>
</refsect1>
<refsect1>
<title>Compatibility</title>
<para>
There is no <command>ALTER TEXT SEARCH CONFIGURATION</command> statement in
the SQL standard.
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<simplelist type="inline">
<member><xref linkend="sql-createtsconfig"/></member>
<member><xref linkend="sql-droptsconfig"/></member>
</simplelist>
</refsect1>
</refentry>