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Asked: 2026-05-11T10:14:27+00:00

I’m using NHibernate to query my database with the criteria API. My criteria is

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I’m using NHibernate to query my database with the criteria API. My criteria is below:

ICriteria c = Session.CreateCriteria(typeof(Transaction));  ProjectionList projections = Projections.ProjectionList(); projections.Add(Projections.Sum('Units'), 'Units'); projections.Add(Projections.GroupProperty('Account'), 'Account'); projections.Add(Projections.GroupProperty('Security'), 'Security'); c.SetProjection(projections);

This is working fine, but what I would like is a way to be able to limit the query to only return when the ‘Units’ property is > 0. In SQL I would simply us a Having Units > 0 clause however I haven’t been able to find a way to do this in NHibernate. Does anyone have any ideas or is my only option to use HQL?

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  1. You can access the ProjectionCriteria from the Criteria object.

    ... c.SetProjection(projections) .ProjectionCriteria .Add(Restrictions.Ge('Units', 0));

    EDIT: This solution doesn’t currently work, however it should work in NHibernate 2.1.0

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