I have an entity mapped to a table with a composite PK.

A JPA QL query of the form:

select COUNT(o) from Entity as o

creates the following invalid SQL:

SELECT COUNT(PK1, PK2) FROM EntityTable

Using Toplink as JPA provider against the same entities and queries works fine as Toplink emits:

SELECT COUNT(*) FROM EntityTable

Is this a Hibernate bug or am I incorrectly using the JPA QL?

This is with the latest version of Hibernate against a MySQL 4.1.x database.

can you provide a runnable testcase and attach it to JIRA