svn commit: r1083258 - /openjpa/trunk/openjpa-project/src/doc/manual/jpa_overview_query.xml

[mt...@apache.org]

Author: mtylenda
Date: Sat Mar 19 19:36:05 2011
New Revision: 1083258

URL: http://svn.apache.org/viewvc?rev=1083258&view=rev
Log:
OPENJPA-478: Get rid of contradictory text about HAVING without GROUP BY in user guide.

Modified:
    openjpa/trunk/openjpa-project/src/doc/manual/jpa_overview_query.xml

Modified: openjpa/trunk/openjpa-project/src/doc/manual/jpa_overview_query.xml
URL: http://svn.apache.org/viewvc/openjpa/trunk/openjpa-project/src/doc/manual/jpa_overview_query.xml?rev=1083258&r1=1083257&r2=1083258&view=diff
==============================================================================
--- openjpa/trunk/openjpa-project/src/doc/manual/jpa_overview_query.xml (original)
+++ openjpa/trunk/openjpa-project/src/doc/manual/jpa_overview_query.xml Sat Mar 19 19:36:05 2011
@@ -3627,10 +3627,18 @@ that apply to grouping items.
             <para>
 If there is no <literal>GROUP BY</literal> clause and the <literal>HAVING
 </literal> clause is used, the result is treated as a single group, and the
-select list can only consist of aggregate functions. When a query declares a
-<literal>HAVING</literal> clause, it must always also declare a <literal>GROUP
-BY</literal> clause.
+select list can only consist of aggregate functions.
+The use of <literal>HAVING</literal> in the absence of
+<literal>GROUP BY</literal> is not required to be supported by a JPA implementation.
+Portable applications should not rely on <literal>HAVING</literal> without the use of
+<literal>GROUP BY</literal>.
             </para>
+            <note>
+                <para>
+OpenJPA supports the use of <literal>HAVING</literal> in the absence of
+<literal>GROUP BY</literal> if the underlying database supports it.
+                </para>
+            </note>
             <para>
 Examples:
             </para>