Linq select on null object generates cross join

Hi there, I'm using Mindscape Lightspeed v5.5.

Getting what seems like a bug, or at least, a problematic feature.

Where if I do a linq query clause and the parent object of a property Im trying to equate is null, then the SQL generated doesn't seem to make sense, it generates a CROSS JOIN.

Ie

...
Anaconda ana = null;

var query = from x in uow.Xanadus
                     where x.Id == ana.XId
                     select x;
...

resultant SQL query is

SELECT
 Xanadu.Id AS [Xanadu.Id],
 Xanadu.Name AS [Xanadu.Name],
 Xanadu.Value AS [Xanadu.Value]
FROM
 Xanadu
 CROSS JOIN
 Anaconda
WHERE
 Xanadu.Id = Anaconda.X_Id

however if 'ana' is a valid Anaconda object but it's Xid property == null, ie

...
Anaconda ana = new Anaconda();
//ana.Xid == null;
var query = from x in uow.Xanadus
                         where x.Id == ana.XId
                         select x;
    ...

the SQL becomes

SELECT
 Xanadu.Id AS [Xanadu.Id],
 Xanadu.Name AS [Xanadu.Name],
 Xanadu.Value AS [Xanadu.Value]
FROM
 Xanadu
WHERE
 Xanadu.Id IS NULL

To me this seems a bit messed up? I would expect both resultant queries to be the same.

Appreciate any input, cheers

AT

Sorry if this relates to this thread - it seems like it was fixed in an older version - not sure it's the same issue

http://www.mindscapehq.com/forums/thread/2541