[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-1615?page=c... ] Bob Tiernay commented on HHH-1615: ---------------------------------- This is, in my opinion, a huge bug. It also breaks compliance with jpql: "groupby_clause ::= GROUP BY groupby_item {, groupby_item}* groupby_item ::= single_valued_path_expression | identification_variable ... The requirements for the SELECT clause when GROUP BY is used follow those of SQL: namely, any item that appears in the SELECT clause (other than as an argument to an aggregate function) must also appear in the GROUP BY clause. In forming the groups, null values are treated as the same for grouping purposes. Grouping by an entity is permitted. In this case, the entity must contain no serialized state fields or lob-valued state fields..." -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira