Commit 8e8d0f7e authored by Peter Eisentraut's avatar Peter Eisentraut

doc: Add more compatibility information for triggers

Louis-Claude Canon and Josh Kupershmidt
parent 4f362926
......@@ -484,7 +484,8 @@ CREATE TRIGGER view_insert
<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>
......@@ -500,6 +501,16 @@ CREATE TRIGGER view_insert
</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
......
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