sorting integer or decimal column in nhibernate

Question

I am trying to sort decimal or integer column. but while sorting ascending zero is coming last.

the code is:

criteria.AddOrder(Order.Asc(Projections.Cast(NHibernateUtil.Decimal,  Projections.Property("cloumn1")))));

output:

35342860
36870852
87654321
213123213
0
0

Any issue in code? or what is solution?

Answer 1

These are most likely null values. You could look at using a conditional restriction or making this a non nullable column with a default of 0, which would seem to be what you are after.

Conditional restriction would be something like this

.AddOrder
    (
        Order.Asc
        (
            Projections.Conditional
            (
                Restrictions.IsNull("cloumn1"),
                Projections.Constant(1),
                Projections.Constant(0)
            )
        )
    )

which if you put in as first ordering will put the nulls at the top and displayed as 0