HQL语句需要很长时间才能返回

Question

我从HQL选择使用NHibernate，它返回一个对象列表。但问题是，我无法退货。该声明只是永远运行，永远不会完成。

我在选择中做错了吗？或者它可能是数据库问题？

以下是代码：

        public IList<SubTask> GetAll(Client client, string filter)
        {
        string qryString;
        QueryParameter[] queryParams = new QueryParameter[1];
        queryParams[0] = new QueryParameter("clientObj", client); // Use Client as obj

        //include tasks that are completed / closed / cancelled is included in query
        qryString = "select st from SubTask st
                     where st.RaisedByClient.ID=" + client.ID + "
                     or (st.ParentTask.ParentProject.ParentClient=:clientObj
                     and st.ParentTaskCategory.VisibleToClient=1 "
                     + filter + // more ands
                     ") order by st.CreateDateTime";

        IQuery qryGetAll = _session.CreateQuery(qryString);
        qryGetAll.SetEntity("clientObj", client);
        IList<SubTask> list = qryGetAll.List<SubTask>();
        return qryGetSubTasksWithFilter.List<SubTask>();
        }