[nhibernate-issues] [NHJIRA] Commented: (NH-2706) subselect in LINQ query with Contains clause produces wrong SQL

[Krzysztof K. (J. <nh...@gm...>]

    [ http://216.121.112.228/browse/NH-2706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=21080#action_21080 ] 

Krzysztof Koźmic commented on NH-2706:
--------------------------------------

I think I found a workaround for now.

It seems to be working properly if I change the subselect to:

        where (from personBar in _session.Query<PersonBars>()
               where personBar.Person.Id == _personId
               select personBar).Any(pb => pb.Bar == foo.Bar)





> subselect in LINQ query with Contains clause produces wrong SQL
> ---------------------------------------------------------------
>
>                 Key: NH-2706
>                 URL: http://216.121.112.228/browse/NH-2706
>             Project:  NHibernate
>          Issue Type: Bug
>          Components: Linq Provider
>    Affects Versions: 3.1.0
>            Reporter: Krzysztof Koźmic
>            Priority: Critical
>
> I was trying to execute the following query
> return (from foo in _session.Query<Foo>()
>         where (from personBar in _session.Query<PersonBars>()
>                where personBar.Person.Id == _personId
>                select personBar.Bar).Contains(foo.Bar)
>         orderby foo.FooNumber
>         select new SomeProjection(
>                 foo.Id,
>                 foo.A,
>                 foo.B,
>                 foo.Bar.Id,
>                 foo.Bar.Description)).ToList();
> basically the goal was to get all Foos with Bar that given user of the app has Bar for too.
> now the part of the SQL generated that has a bug in it looks kind of like this (sorry for obscuring it):
> where    some clauses
> and (exists (select bar_.ID
>                       from   PERSON_BAR pb
>                       joins to bar
>                       where  some other clauses here
>                              and pb.ID = foo0_.BAR_ID))
> Notice the last line which should say
> pb.BAR_ID = foo0.BAR_ID
> that's the bug.
> Hope that helps.

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