[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-3684) Sybase - ANSI joins fail if there are 3 or more joins and at least one join involves a union
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-3684?page=c...
]
Gail Badner commented on HHH-3684:
----------------------------------
It looks like the tests may be failing for different reasons.
UnionSubclassPropertyRefTest.testOneToOnePropertyRef() is failing on a query like:
select ...
from U_SBCLS_PROPREF_ACCT account0_
inner join U_SBCLS_PROPREF_CUST customer1_
on account0_.customerPersonId=customer1_.personId
inner join ( select ... from U_SBCLS_PROPREF_PERS
union
select ... from U_SBCLS_PROPREF_CUST ) person2_
on account0_.personId=person2_.personId
but succeeds in the following when the order of inner joins is changed:
select ...
from U_SBCLS_PROPREF_ACCT account0_
inner join ( select ... from U_SBCLS_PROPREF_PERS
union
select ... from U_SBCLS_PROPREF_CUST ) person2_
on account0_.personId=person2_.personId
inner join U_SBCLS_PROPREF_CUST customer1_
on account0_.customerPersonId=customer1_.personId
Is this a bug in Sybase?
Sybase - ANSI joins fail if there are 3 or more joins and at least
one join involves a union
--------------------------------------------------------------------------------------------
Key: HHH-3684
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3684
Project: Hibernate Core
Issue Type: Bug
Components: core
Reporter: Gail Badner
Assignee: Gail Badner
Two unit tests fail:
UnionSubclassTest.testUnionSubclassFetchMode()..
UnionSubclassPropertyRefTest.testOneToOnePropertyRef()
This may be due to a bug in Sybase. A similar problem is discussed here:
http://www.forumtopics.com/busobj/viewtopic.php?p=442226&sid=40bd9624...
For UnionSubclassTest.testUnionSubclassFetchMode(), changing:
select ...
from ( select ... from humans
union
select ... from employees ) this_
inner join locations location2_
on this_.location=location2_.id
left outer join ( select ... from employees
union
select ... from humans
union
select ... from aliens ) beings3_
on location2_.id=beings3_.location
:
to:
select ...
from ( select ... from humans
union
select ... from employees ) this_
inner join (locations location2_
left outer join ( select ... from employees
union
select ... from humans
union
select ... from aliens ) beings3_
on location2_.id=beings3_.location)
: on this_.location=location2_.id
fixes the problem.
This change is similar to what is documented for a "right-nested outer join" at
http://infocenter.sybase.com/help/topic/com.sybase.infocenter.dc32300.150....
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