Update data without retrieving

C开发者_开发百科an NHibernate update some (not all) fields in the table row without retrieving any data? I know Id of the entity.

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You can find all the examples here:

http://nhibernate.info/doc/nh/en/index.html#batch-direct

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session.CreateQuery("update Foo f set f.Date = :date where f.Id = :id")
    .SetParameter("date", DateTime.Now)
    .SetParameter("id", 25)
    .ExecuteUpdate();

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You can do it with HQL