<para>
The <command>CREATE TRIGGER</command> statement in
<productname>PostgreSQL</productname> implements a subset of the
- <acronym>SQL</> standard. The following functionality is currently missing:
+ <acronym>SQL</> standard. The following functionalities are currently
+ missing:
<itemizedlist>
<listitem>
</para>
</listitem>
+ <listitem>
+ <para>
+ <productname>PostgreSQL</productname> does not allow the old and new
+ tables to be referenced in statement-level triggers, i.e., the tables
+ that contain all the old and/or new rows, which are referred to by the
+ <literal>OLD TABLE</literal> and <literal>NEW TABLE</literal> clauses in
+ the <acronym>SQL</> standard.
+ </para>
+ </listitem>
+
<listitem>
<para><productname>PostgreSQL</productname> only allows the execution
of a user-defined function for the triggered action. The standard