[nhibernate-issues] [NHJIRA] Created: (NH-2703) Using a "with" restriction in outer joins result in wrong SQL

[Roy J. (JIRA) <nh...@gm...>]

Using a "with" restriction in outer joins result in wrong SQL
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                 Key: NH-2703
                 URL: http://216.121.112.228/browse/NH-2703
             Project:  NHibernate
          Issue Type: Bug
          Components: QueryOver
    Affects Versions: 3.2.0Beta1
            Reporter: Roy Jacobs
            Priority: Major
         Attachments: JoinTest.zip

I have a Parent class that has two types of children: "Child" in a list called "Children" and "Other" in a list called "OtherChildren".

If I do a QueryOver on Parent, and outer join both Child and Other tables then everything works.

If I add a "With" on the "Child" join, linking it to "Other" (e.g. child.MyProp == other.OtherProp) then the SQL that is generated does not work in SQL Server 2008:

SELECT child2_.MyProp as y0_
FROM Parent this_
left outer join Child child2_ on this_.Id=child2_.parent_id and ( child2_.MyProp = other1_.OtherProp )
left outer join Other other1_ on this_.Id=other1_.parent_id

The error message is:
System.Data.SqlClient.SqlException : The multi-part identifier "other1_.OtherProp" could not be bound.

This is because SQL Server expects "other1_" to be joined *BEFORE* "child2_". If I manually change the join order around in the SQL, it works.

Reshuffling the order in which I perform the joins in C# does not help, the emitted SQL is always incorrect.

I have attached a failing test that can be added to NHibernate.Test which demonstrates this problem.

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