一个是EF内联多表查询，一个是EF中写SQL文。

 public IList<MenuModel> GetAllMenu()
        {
            using (IMMEntities context = new IMMEntities())
            {
                var menuList = from A in context.BASE_FUNCTION
                               join B in context.BASE_MENU on A.FUNCTION_ID equals B.FUNCTION_ID
                               select new MenuModel
                               {
                                   Function = new FunctionModel() { FunctionId = A.FUNCTION_ID, FunctionName = A.FUNCTION_NAME },
                                   MenuType = B.MENU_TYPE,
                                   PicName = B.PIC_NAME,
                                   MenuId = B.MENU_ID,
                                   MenuName = B.MENU_NAME,
                                   MenuStyleId = B.MENU_STYLEID,
                                   ParentId = B.PARENT_ID,
                                   Sort = B.SORT,
                                   Status = B.STATUS
                               };

                return menuList.ToList();
            }
        }

EF多表查询。↑

 public int insertBussiness(CasePublicModel businessModel)
        {
            using (IMMEntities context = new IMMEntities())
            {
                SqlParameter[] parameters = new SqlParameter[]
                {
                    new SqlParameter("@TITLE",businessModel.Title),
                    new SqlParameter("@CASE_TYPE_ID",businessModel.CaseTypeId),
                    new SqlParameter("@DESCRIPTION",businessModel.Description),
                    new SqlParameter("@PUBLISH_MEMBER_ID",businessModel.PublicMemberId),
                    new SqlParameter("@AUTHOR_MEMBER_ID",businessModel.AuthorMemberId),
                    new SqlParameter("@COIN",businessModel.Coin),
                    new SqlParameter("@ANSWER_DESCRIPTION",businessModel.AnswerDescription),
                    new SqlParameter("@STATUS",businessModel.Status),
                    new SqlParameter("@PUBLISH_DT",businessModel.PublishDT),
                    new SqlParameter("@ANONYMOUS",businessModel.Anonymous),
                    new SqlParameter("@IMAGES_URI",businessModel.ImagesURI),
                    new SqlParameter("@CHANGE_DT",businessModel.ChangeDT)
                };
                context.Database.ExecuteSqlCommand(SQL_INSERT_BUSINESS_CASE, parameters);
                return context.SaveChanges();
            }
        }

用context.Database.ExecuteSqlCommand(SQL文，参数数组)。↑