linq-to-nhibernate - 相当于 linq-to-nhibernate 中的 hql coalesce

Question

假设我有以下 hql：

select cast(coalesce(sum(c.Valoare), 0) as decimal)
      from Comision as c
      where c.User = :user

有没有办法在 Linq-To-Nhibernate 中写这个？

Answer 1

您可以使用 C# 空合并运算符吗？

(from c in Comision
where c.User = user
select c.Valoare ?? 0).Sum()