svn commit: r473979 - /db/derby/docs/trunk/src/ref/rrefsqlj43125.dita

[bp...@apache.org]

Author: bpendleton
Date: Sun Nov 12 08:08:09 2006
New Revision: 473979

URL: http://svn.apache.org/viewvc?view=rev&rev=473979
Log:
DERBY-1953: Make FOR EACH and MODE DB2SQL optional in CREATE TRIGGER

This patch was contributed by Yip Ng (yipng168@gmail.com)

This patch updates the ref manual - CREATE TRIGGER syntax and examples to
indicate that  [ FOR EACH { ROW | STATEMENT } ] and [ MODE DB2SQL ] are
now optional, and that STATEMENT is the default if FOR EACH is not specified.

Modified:
    db/derby/docs/trunk/src/ref/rrefsqlj43125.dita

Modified: db/derby/docs/trunk/src/ref/rrefsqlj43125.dita
URL: http://svn.apache.org/viewvc/db/derby/docs/trunk/src/ref/rrefsqlj43125.dita?view=diff&rev=473979&r1=473978&r2=473979
==============================================================================
--- db/derby/docs/trunk/src/ref/rrefsqlj43125.dita (original)
+++ db/derby/docs/trunk/src/ref/rrefsqlj43125.dita Sun Nov 12 08:08:09 2006
@@ -53,7 +53,7 @@
 { INSERT | DELETE | UPDATE [ OF <i>column-Name</i> [, <i><xref href="rrefcolumnname.dita#rrefcolumnname">column-Name</xref></i>]* ] }
 ON <i><xref href="rreftablename.dita#rreftablename">table-Name</xref></i>
 [ <i><xref href="rrefsqlj89752.dita#rrefsqlj89752">ReferencingClause</xref></i> ]
-FOR EACH { ROW | STATEMENT } MODE DB2SQL 
+[ FOR EACH { ROW | STATEMENT } ] [ MODE DB2SQL ] 
 <i><xref href="rrefsqlj43125.dita#rrefsqlj43125/i1149821">Triggered-SQL-statement</xref></i></b></codeblock> </refsyn>
 <section><title>Before or after: when triggers fire</title> <p>Triggers are
 defined as either <i>Before</i> or <i>After</i> triggers. <ul>
@@ -107,7 +107,9 @@
 for a transition table and statement triggers cannot designate a correlation
 for transition variables.  </p> </section>
 <section id="sqlj54276"><title>Statement versus row triggers</title> <p>You
-must specify whether a trigger is a <i>statement trigger</i> or a <i>row trigger</i>:
+have the option to specify whether a trigger is a <i>statement trigger</i> or a <i>row trigger</i>.
+If it is not specified in the CREATE TRIGGER statement via FOR EACH clause, then the trigger is  
+a <i>statement trigger</i> by default.
   <ul>
 <li><i>statement triggers</i>   <p>A statement trigger fires once per triggering
 event and regardless of whether any rows are modified by the insert, update,
@@ -159,14 +161,14 @@
 CREATE TRIGGER FLIGHTSDELETE
   AFTER DELETE ON FLIGHTS
   REFERENCING OLD_TABLE AS DELETEDFLIGHTS
-  FOR EACH STATEMENT MODE DB2SQL
+  FOR EACH STATEMENT 
   DELETE FROM FLIGHTAVAILABILITY WHERE FLIGHT_ID IN
   (SELECT FLIGHT_ID FROM DELETEDFLIGHTS);
 
 CREATE TRIGGER FLIGHTSDELETE3
   AFTER DELETE ON FLIGHTS
   REFERENCING OLD AS OLD
-  FOR EACH ROW MODE DB2SQL
+  FOR EACH ROW 
   DELETE FROM FLIGHTAVAILABILITY WHERE FLIGHT_ID = OLD.FLIGHT_ID;
 </b></codeblock> <note>You can find more examples in the <cite><ph conref="refconrefs.dita#pub/citdevelop"></ph></cite>.</note> </example>
 <section><title>Trigger recursion</title> <p>The maximum trigger recursion