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Michael Bouschen commented on JDO-643: -------------------------------------- I agree, avg(expression) should return - Double for integral types (byte, short, int, long), float, double and their wrapper classes - BigDecimal for BigInteger and BigDecimal Two remarks: - We need to point out that this is an incompatible change, meaning a valid JDO 3.0 query might run into a RuntimeException. - JPA always uses Double as return type > avg return type > --------------- > > Key: JDO-643 > URL: https://issues.apache.org/jira/browse/JDO-643 > Project: JDO > Issue Type: Bug > Components: specification > Affects Versions: JDO 2 maintenance release 2 > Reporter: Guido Anzuoni > Assignee: Michael Bouschen > Fix For: JDO 3 maintenance release 1 > > > Aggregate type specification at page 175 claims that avg(expression) return > type is the same of the enclosed expression. > This is wrong from a strictly mathematical point of view. > In fact, if you select an avg on an int field member the result is truncated. > The result type should always be double. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.