From: <glassfish_at_javadesktop.org>
Date: Mon, 08 Oct 2007 13:29:43 PDT

You might need to use a native query for that - the spec only allows the following for the COUNT (see in BNF):
 [i]COUNT ( [DISTINCT ] identification_variable | state_field_path_expression | single_valued_association_path_expression)[/i]

-marina
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