[hibernate-issues] [Hibernate-JIRA] Created: (HHH-2430) select count(a), a fom Entity a where a.class in (Entity,EntitySubclass)

[jose (JIRA)]

select count(a),a fom Entity a where a.class in (Entity,EntitySubclass)
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         Key: HHH-2430
         URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2430
     Project: Hibernate3
        Type: Bug

 Environment: HHH-3.2.x (Sybase)
    Reporter: jose



select count(c),c fom Child c 
inner join fetch c.parent
inner join fetch c. mother
where c.class in (Child,ChildSubclass) 

sql syntax error: duplicate IDs in SELECT clause for Child entity and all fetched relations (not collection)

Exist any formula to get a rowcount() to a named query? (without writing new query and without Criteria API)

   myNamedQuery.count()  -> possible solution: select count(*) from (SQL_OF_NAMED_QUERY)

Inefficient solution: query.scroll().last().getRowNumber(); 

note: as most drivers (including Oracle, MySQL...) basically read all the data on the client side in order 
to calculate the number of rows.

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