关于图表分类排序问题

能不能对那个分类进行排序？
sql语句如下：
正确顺序：1，2，3，18，19，4，5，6，7

select sum(case DrawingType when 1 then 1 else 0 end) as '图纸CAD',
sum(case DrawingType when 0 then 1 else 0 end) as '图纸2020',
sum(case DrawingType when 2 then 1 else 0 end) as '其他',
COUNT(OrderNo) as '总量',
(case OrderStatus
when 1 then '待受理'
when 2 then '待审图'
when 3 then '待拆单'
when 4 then '待报价审核'
when 5 then '待经销商付款'
when 6 then '待付款确认'
when 7 then '待计划接单'
when 18 then '待料单审核'
when 19 then '待孔位审核' end) as '分类'
from dbo.C_Order
where 1=1
${if(len(ordertype)=0,""," and OrderType in ("+ordertype+")")}
${if(len(OrderStatus)=0,"and OrderStatus in (1,2,3,4,5,6,7,18,19)"," and OrderStatus in ("+OrderStatus+")")}
group by OrderStatus