[hibernate-issues] [Hibernate-JIRA] Created: (HHH-7165) ount query on classes mapped as EmbeddedId with multiple Id's fail to execute

[Ståle W. Pedersen (JIRA)]

ount query on classes mapped as EmbeddedId with multiple Id's fail to execute
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                 Key: HHH-7165
                 URL: https://hibernate.onjira.com/browse/HHH-7165
             Project: Hibernate ORM
          Issue Type: Bug
          Components: core
    Affects Versions: 4.1.1
            Reporter: Ståle W. Pedersen


When doing a count on a class mapped as EmbeddedId with multiple Id's the generated sql will fail on several db's (tested on MySQL/MariaDB) since hibernate generate a count sql containing all the id's.
Hibernate creates a different (correct) sql on classes mapped with IdClass and multiple Id's.
A simple test that verify the difference between the two:
https://github.com/stalep/hibernate-orm/commit/54911765de7981ec9a2318fc9928be68ff37bab3

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