Update to CREATE CONSTRAINT manual page.

Michael Glaesemann

doc/src/sgml/ref/create_constraint.sgml

 <!--
-$PostgreSQL: pgsql/doc/src/sgml/ref/create_constraint.sgml,v 1.14 2006/09/16 00:30:17 momjian Exp $
+$PostgreSQL: pgsql/doc/src/sgml/ref/create_constraint.sgml,v 1.15 2006/10/16 19:30:09 momjian Exp $
 PostgreSQL documentation
 -->
 
@@ -21,9 +21,12 @@ PostgreSQL documentation
  <refsynopsisdiv>
 <synopsis>
 CREATE CONSTRAINT TRIGGER <replaceable class="parameter">name</replaceable>
-    AFTER <replaceable class="parameter">events</replaceable> ON
-    <replaceable class="parameter">tablename</replaceable> <replaceable class="parameter">constraint</replaceable> <replaceable class="parameter">attributes</replaceable>
-    FOR EACH ROW EXECUTE PROCEDURE <replaceable class="parameter">funcname</replaceable> ( <replaceable class="parameter">args</replaceable> )
+    AFTER <replaceable class="parameter">event [ OR ... ]</replaceable>
+    ON <replaceable class="parameter">table_name</replaceable>
+    [ FROM <replaceable class="parameter">referenced_table_name</replaceable> ]
+    { NOT DEFERRABLE | [ DEFERABBLE ] { INITIALLY IMMEDIATE | INITIALLY DEFERRED } }
+    FOR EACH ROW
+    EXECUTE PROCEDURE <replaceable class="parameter">funcname</replaceable> ( <replaceable class="parameter">arguments</replaceable> )
 </synopsis>
  </refsynopsisdiv>
 
@@ -47,7 +50,11 @@ CREATE CONSTRAINT TRIGGER <replaceable class="parameter">name</replaceable>
     <term><replaceable class="PARAMETER">name</replaceable></term>
     <listitem>
      <para>
-	The name of the constraint trigger.
+      The name of the constraint trigger. The actual name of the
+      created trigger will be of the form
+      <literal>RI_ConstraintTrigger_0000<literal> (where 0000 is some number
+      assigned by the server).
+      Use this assigned name is when dropping the constraint.
      </para>
     </listitem>
    </varlistentry>
@@ -56,35 +63,42 @@ CREATE CONSTRAINT TRIGGER <replaceable class="parameter">name</replaceable>
     <term><replaceable class="PARAMETER">events</replaceable></term>
     <listitem>
      <para>
-	The event categories for which this trigger should be fired.
+      One of <literal>INSERT</literal>, <literal>UPDATE</literal>, or
+      <literal>DELETE</literal>; this specifies the event that will fire the
+      trigger. Multiple events can be specified using <literal>OR<literal>.
      </para>
     </listitem>
    </varlistentry>
 
    <varlistentry>
-      <term><replaceable class="PARAMETER">tablename</replaceable></term>
+    <term><replaceable class="PARAMETER">table_name</replaceable></term>
     <listitem>
      <para>
-	The name (possibly schema-qualified) of the table in which
+      The (possibly schema-qualified) name of the table in which
       the triggering events occur.
      </para>
     </listitem>
    </varlistentry>
 
    <varlistentry>
-      <term><replaceable class="PARAMETER">constraint</replaceable></term>
+    <term><replaceable class="PARAMETER">referenced_table_name</replaceable></term>
     <listitem>
      <para>
-	Actual constraint specification.
+      The (possibly schema-qualified) name of the table referenced by the
+      constraint. Used by foreign key constraints triggers.
      </para>
     </listitem>
    </varlistentry>
 
    <varlistentry>
-      <term><replaceable class="PARAMETER">attributes</replaceable></term>
+    <term><literal>DEFERRABLE</literal></term>
+    <term><literal>NOT DEFERRABLE</literal></term>
+    <term><literal>INITIALLY IMMEDIATE</literal></term>
+    <term><literal>INITIALLY DEFERRED</literal></term>
     <listitem>
      <para>
-	The constraint attributes.
+      See the <xref linkend="SQL-CREATETABLE" endterm="SQL-CREATETABLE-TITLE">
+      documentation for details of these constraint options.
      </para>
     </listitem>
    </varlistentry>
@@ -93,10 +107,23 @@ CREATE CONSTRAINT TRIGGER <replaceable class="parameter">name</replaceable>
     <term><replaceable class="PARAMETER">funcname</replaceable>(<replaceable class="PARAMETER">args</replaceable>)</term>
     <listitem>
      <para>
-	The function to call as part of the trigger processing.
+      The function to call as part of the trigger processing. See <xref
+      linkend="SQL-CREATETRIGGER" endterm="SQL-CREATETRIGGER-TITLE"> for
+      details.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
   </refsect1>
-</refentry>
+
+ <refsect1>
+  <title>Compatibility</title>
+  <para>
+   <command>CREATE CONTRAINT TRIGGER</command> is a
+   <productname>PostgreSQL</productname> extension of the <acronym>SQL</>
+   standard.
+  </para>
+ </refsect1>
+
+ </refentry>
+