doc: improve CREATE RULE event list

bmomjian · bmomjian · commit c27bf777cf4e · 2014-04-22T17:54:42.000-04:00
Patch by Fujii Masao

Report by Emanuel Calvo
diff --git a/doc/src/sgml/ref/create_rule.sgml b/doc/src/sgml/ref/create_rule.sgml
@@ -24,6 +24,10 @@ PostgreSQL documentation
 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>
 
