Add documentation for ALTER TABLE ENABLE/DISABLE TRIGGER.

doc/src/sgml/ref/alter_trigger.sgml

@@ -1,5 +1,5 @@
 <!--
-$PostgreSQL: pgsql/doc/src/sgml/ref/alter_trigger.sgml,v 1.8 2003/11/29 19:51:38 pgsql Exp $
+$PostgreSQL: pgsql/doc/src/sgml/ref/alter_trigger.sgml,v 1.9 2005/08/24 17:24:19 tgl Exp $
 PostgreSQL documentation
 -->
 
@@ -72,6 +72,18 @@ ALTER TRIGGER <replaceable class="PARAMETER">name</replaceable> ON <replaceable
   </variablelist>
  </refsect1>
 
+ <refsect1>
+  <title>Notes</title>
+
+   <para>
+    The ability to temporarily enable or disable a trigger is provided by
+    <xref linkend="SQL-ALTERTABLE" endterm="SQL-ALTERTABLE-TITLE">, not by
+    <command>ALTER TRIGGER</>, because <command>ALTER TRIGGER</> has no
+    convenient way to express the option of enabling or disabling all of
+    a table's triggers at once.
+   </para>
+ </refsect1>
+
  <refsect1>
   <title>Examples</title>
 
@@ -91,6 +103,14 @@ ALTER TRIGGER emp_stamp ON emp RENAME TO emp_track_chgs;
    extension of the SQL standard.
   </para>
  </refsect1>
+
+ <refsect1>
+  <title>See Also</title>
+
+  <simplelist type="inline">
+   <member><xref linkend="sql-altertable" endterm="sql-altertable-title"></member>
+  </simplelist>
+ </refsect1>
 </refentry>
 
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