[jira] [Created] (OPENJPA-2571) Criteria Builder query generates extra alias when using multiselect.

[Heath Thomann (JIRA)]

Heath Thomann created OPENJPA-2571:
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             Summary: Criteria Builder query generates extra alias when using 
multiselect.
                 Key: OPENJPA-2571
                 URL: https://issues.apache.org/jira/browse/OPENJPA-2571
             Project: OpenJPA
          Issue Type: Bug
          Components: criteria
    Affects Versions: 2.2.3, 2.4.0
            Reporter: Heath Thomann
            Priority: Critical


I have a scenario (see attached .test file) where an extra alias is generated 
for a query created by CriteriaBuilder.  For the given test, this SQL is 
generated:

SELECT t0.empl_cnt FROM
T_FACT_WORK_ASGNMT t0, T_DIM_DAY t1, T_DIM_DAY t3 
WHERE (t0.CLNT_OBJ_ID = ? AND t1.ROLL_13_MNTH_IND = ? AND t0.pers_obj_id IN (
   SELECT t2.pers_obj_id FROM T_FACT_WORK_ASGNMT t2 WHERE    
   (t2.CLNT_OBJ_ID = ? AND t3.MNTH_STRT_DAY_KY >= ?))) 

Notice that T_DIM_DAY is aliased twice.  
If I do a 'toString' on the CriteriaQuery which the test creates, and then 
create/execute a query using the string, the generated query is exactly like 
the above SQL, minus the 'T_DIM_DAY t3'.  This would seem to tell me that we 
take a different path when creating/executing a query with a 'CriteriaQuery' as 
opposed to just a JPQL string.

Thanks,

Heath



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