builder.AppendFormat(" update RB_Class_Plan SET TeacherId={0} where ClassPlanId in({1})",newChangePlanItemList.FirstOrDefault().TeacherId,string.Join(",",oldChangePlanItemList.Select(x=>x.TeacherId)));
builder.AppendFormat(" update RB_Class_Plan SET TeacherId={0} where ClassPlanId in({1})",newChangePlanItemList.FirstOrDefault().TeacherId,string.Join(",",oldChangePlanItemList.Select(x=>x.ClassPlanId)));