-<!-- $PostgreSQL: pgsql/doc/src/sgml/release-9.0.sgml,v 2.25 2010/06/03 16:33:36 momjian Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/release-9.0.sgml,v 2.26 2010/06/03 19:38:39 momjian Exp $ -->
<sect1 id="release-9-0">
<title>Release 9.0</title>
<para>
While a check can be performed inside the trigger, doing it in an
- external <literal>WHERE</> clause has performance benefits.
+ external <literal>WHEN</> clause has performance benefits.
</para>
</listitem>