CREATE [ OR REPLACE ] RULE <replaceable class="parameter">name</replaceable> AS ON <replaceable class="parameter">event</replaceable>

TO <replaceable class="parameter">table_name</replaceable> [ WHERE <replaceable class="parameter">condition</replaceable> ]

DO [ ALSO | INSTEAD ] { NOTHING | <replaceable class="parameter">command</replaceable> | ( <replaceable class="parameter">command</replaceable> ; <replaceable class="parameter">command</replaceable> ... ) }

<phrase>where <replaceable class="parameter">event</replaceable> can be one of:</phrase>

SELECT | INSERT | UPDATE | DELETE

</synopsis>

</refsynopsisdiv>