drop_tsconfig.sgml

来自「postgresql8.3.4源码,开源数据库」· SGML 代码 · 共 119 行

<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/drop_tsconfig.sgml,v 1.1 2007/08/21 21:08:47 tgl Exp $
PostgreSQL documentation
-->

<refentry id="SQL-DROPTSCONFIG">
 <refmeta>
  <refentrytitle id="SQL-DROPTSCONFIG-TITLE">DROP TEXT SEARCH CONFIGURATION</refentrytitle>
  <refmiscinfo>SQL - Language Statements</refmiscinfo>
 </refmeta>

 <refnamediv>
  <refname>DROP TEXT SEARCH CONFIGURATION</refname>
  <refpurpose>remove a text search configuration</refpurpose>
 </refnamediv>
  
 <indexterm zone="sql-droptsconfig">
  <primary>DROP TEXT SEARCH CONFIGURATION</primary>
 </indexterm>

 <refsynopsisdiv>
<synopsis>
DROP TEXT SEARCH CONFIGURATION [ IF EXISTS ] <replaceable class="PARAMETER">name</replaceable> [ CASCADE | RESTRICT ]
</synopsis>
 </refsynopsisdiv>

 <refsect1>
  <title>Description</title>

  <para>
   <command>DROP TEXT SEARCH CONFIGURATION</command> drops an existing text
   search configuration.  To execute this command you must be the owner of the
   configuration.
  </para>
 </refsect1>
  
 <refsect1>
  <title>Parameters</title>

  <variablelist>

   <varlistentry>
    <term><literal>IF EXISTS</literal></term>
    <listitem>
     <para>
      Do not throw an error if the text search configuration does not exist.
      A notice is issued in this case.
     </para>
    </listitem>
   </varlistentry>

   <varlistentry>
    <term><replaceable class="parameter">name</replaceable></term>
    <listitem>
     <para>
      The name (optionally schema-qualified) of an existing text search
      configuration.
     </para>
    </listitem>
   </varlistentry>

   <varlistentry>
    <term><literal>CASCADE</literal></term>
    <listitem>
     <para>
      Automatically drop objects that depend on the text search configuration.
     </para>
    </listitem>
   </varlistentry>

   <varlistentry>
    <term><literal>RESTRICT</literal></term>
    <listitem>
     <para>
      Refuse to drop the text search configuration if any objects depend on it.
      This is the default.
     </para>
    </listitem>
   </varlistentry>
  </variablelist>
 </refsect1>

 <refsect1>
  <title>Examples</title>

  <para>
   Remove the text search configuration <literal>my_english</literal>:

<programlisting>
DROP TEXT SEARCH CONFIGURATION my_english;
</programlisting>

   This command will not succeed if there are any existing indexes
   that reference the configuration in <function>to_tsvector</> calls.
   Add <literal>CASCADE</> to
   drop such indexes along with the text search configuration.
  </para>
 </refsect1>
 
 <refsect1>
  <title>Compatibility</title>

  <para>
   There is no <command>DROP TEXT SEARCH CONFIGURATION</command> statement in
   the SQL standard.
  </para>
 </refsect1>

 <refsect1>
  <title>See Also</title>

  <simplelist type="inline">
   <member><xref linkend="sql-altertsconfig" endterm="sql-altertsconfig-title"></member>
   <member><xref linkend="sql-createtsconfig" endterm="sql-createtsconfig-title"></member>
  </simplelist>
 </refsect1>

</refentry>