Question

I do the fallowing HQL with NHibernate:

from Contact a where IsInternal = 0

this give me the fallowing sql (from NHProfiler):

select TOP ( 25 /* @p0 */ ) contact0_.Id                   as Id29_,
                   contact0_.ObjectVersion        as ObjectVe2_29_,
                   ...
                   ...
from   Contact contact0_
       left outer join Company contact0_1_
         on contact0_.Id = contact0_1_.Id
       left outer join Person contact0_2_
         on contact0_.Id = contact0_2_.Id
       left outer join Branch contact0_3_
         on contact0_.Id = contact0_3_.Id
       left outer join ContactGroup contact0_4_
         on contact0_.Id = contact0_4_.Id
where  contact0_.IsInternal = 0

I want now extend the where-condition with

   ... and (contact0_1.Id is not null or contact0_2_.Id is not null)

The question is now, how can I access the joined table in the HQL?

Best Regards, Thomas

Answer 1

Er, if the field is null, then referenced object is null. So:

where IsInternal = 0 and (a.person is not null or a.company is not null)