Question

I have the following method. Which returns “Could not execute update query”. If i query another entities property ie “Order.Campaign.Id” do i need include a join? How would this work. ?

public void RemoveOrderItems(int companyId, int campaignId, int productId, int orderStatus)
{
    using (ITransaction transaction = _session.BeginTransaction())
    {
        _session.CreateQuery("delete from OrderItem where Product.Id = '" + productId + "' and Order.Company.Id = '" + companyId + "' and Order.Campaign.Id = '" + campaignId + "' and Order.OrderStatus = '" + orderStatus + "'").ExecuteUpdate();
        transaction.Commit();
    }
}

** EDIT **

Here is the sql statement.

DELETE oi
FROM OrderItems oi inner JOIN  Orders o On oi.OrderId = o.Id
Where oi.ProductId = '13077' and o.CompanyId = '32' and o.CampaignId = '2' and o.OrderStatus = 3

Answer 1

_session.CreateQuery(@"
    delete OrderItem oi
    where oi in
         (select i
          from OrderItem i
          where i.Product.Id = :productId
          and i.Order.Company.Id = :companyId
          and i.Order.Campaign.Id :campaignId
          and i.Order.OrderStatus = :orderStatus)
    ")
    .SetParameter("productId", productId)
    .SetParameter("companyId", companyId)
    .SetParameter("campaignId", campaignId)
    .SetParameter("orderStatus", orderStatus)
    .ExecuteUpdate();

The generated SQL is not exactly the same that you created manually, but it’s semantically equivalent.