NHibernate System.IndexOutOfRangeException

У меня действительно простой класс, который дает странную ошибку. Класс имеет только 1 свойство, и запрос действительно прост. Самая страшная часть заключается в том, что это происходит случайно. После получения этой ошибки обычно обновление страницы заставляет ее идти в путь, и приложение снова не получает сообщение об ошибке.

Это может быть проблема с подключением к базе данных?

Я получаю:

[IndexOutOfRangeException: Department5_]
   System.Data.ProviderBase.FieldNameLookup.GetOrdinal(String fieldName) +4839010
   System.Data.SqlClient.SqlDataReader.GetOrdinal(String name) +67
   NHibernate.Driver.NHybridDataReader.GetOrdinal(String name) +46
   NHibernate.Type.NullableType.NullSafeGet(IDataReader rs, String name) +87
   NHibernate.Type.NullableType.NullSafeGet(IDataReader rs, String[] names, ISessionImplementor session, Object owner) +62
   NHibernate.Loader.Loader.GetKeyFromResultSet(Int32 i, IEntityPersister persister, Object id, IDataReader rs, ISessionImplementor session) +213
   NHibernate.Loader.Loader.GetRowFromResultSet(IDataReader resultSet, ISessionImplementor session, QueryParameters queryParameters, LockMode[] lockModeArray, EntityKey optionalObjectKey, IList hydratedObjects, EntityKey[] keys, Boolean returnProxies) +301
   NHibernate.Loader.Loader.DoQuery(ISessionImplementor session, QueryParameters queryParameters, Boolean returnProxies) +1422
   NHibernate.Loader.Loader.DoQueryAndInitializeNonLazyCollections(ISessionImplementor session, QueryParameters queryParameters, Boolean returnProxies) +114
   NHibernate.Loader.Loader.DoList(ISessionImplementor session, QueryParameters queryParameters) +205

[ADOException: could not execute query
[ select department0_.Department as Department5_ from tblDepartments department0_ where department0_.Department like 'CBS - %' ]
[SQL: select department0_.Department as Department5_ from tblDepartments department0_ where department0_.Department like 'CBS - %']]
   NHibernate.Loader.Loader.DoList(ISessionImplementor session, QueryParameters queryParameters) +383
   NHibernate.Loader.Loader.ListIgnoreQueryCache(ISessionImplementor session, QueryParameters queryParameters) +52
   NHibernate.Loader.Loader.List(ISessionImplementor session, QueryParameters queryParameters, ISet`1 querySpaces, IType[] resultTypes) +183
   NHibernate.Hql.Ast.ANTLR.Loader.QueryLoader.List(ISessionImplementor session, QueryParameters queryParameters) +102
   NHibernate.Hql.Ast.ANTLR.QueryTranslatorImpl.List(ISessionImplementor session, QueryParameters queryParameters) +684
   NHibernate.Engine.Query.HQLQueryPlan.PerformList(QueryParameters queryParameters, ISessionImplementor session, IList results) +816
   NHibernate.Impl.SessionImpl.List(String query, QueryParameters queryParameters, IList results) +277
   NHibernate.Impl.SessionImpl.List(String query, QueryParameters parameters) +235
   NHibernate.Impl.QueryImpl.List() +224
   DispatchBoard.Models.Repository.Find(String hql) +76
   DispatchBoard.Controllers.HomeController.Filter() +48
   lambda_method(ExecutionScope , ControllerBase , Object[] ) +39
   System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +17
   System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +178
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +24
   System.Web.Mvc.<>c__DisplayClassa.<InvokeActionMethodWithFilters>b__7() +52
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +254
   System.Web.Mvc.<>c__DisplayClassc.<InvokeActionMethodWithFilters>b__9() +19
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +192
   System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +399
   System.Web.Mvc.Controller.ExecuteCore() +126
   System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +27
   System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +7
   System.Web.Mvc.MvcHandler.ProcessRequest(HttpContextBase httpContext) +151
   System.Web.Mvc.MvcHandler.ProcessRequest(HttpContext httpContext) +57
   System.Web.Mvc.MvcHandler.System.Web.IHttpHandler.ProcessRequest(HttpContext httpContext) +7
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +181
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75

Вот мой класс

public class Department : IObject {
    public virtual string Name { get; set; }
}

Файл hbm

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
    <class name="DispatchBoard.Models.Department, DispatchBoard" table="tblDepartments">
        <id name="Name" column="Department" type="String" length="50">
            <generator class="assigned" />
        </id>

    </class>
</hibernate-mapping>

и вот запрос HQL

var hql = "from Department d where d.Name like 'CBS - %'";
_session.CreateQuery(hql).List<T>();

Ответы

SELECT TOP 1 *
FROM Table WITH (TABLOCKX) 
WHERE Column = 'Value'

SELECT TOP 1 *, 0 as clazz_ 
FROM Table WITH (TABLOCKX) 
WHERE Column = 'Value'