--统计出日销售量
select p.name,sum_num(od.num)
into #t
from product p
join orderdetail od on p.id=od.Productid
join orders o on o.id=od.Orderid
where o.yn=0 --假设0代表没有删除
and a.createtime=getdate() --统计今天--生成排名
select name,sum_num,排名=(
select count(distinct sum_num) from #t
where sum_num>=a.sum_num)
from #t a
order by 排名--处理完成后删除临时表
drop table #t
select p.name,sum_num(od.num)
into #t
from product p
join orderdetail od on p.id=od.Productid
join orders o on o.id=od.Orderid
where o.yn=0 --假设0代表没有删除
and a.createtime=getdate() --统计今天--生成排名
select name,sum_num,排名=(
select count(distinct sum_num) from #t
where sum_num>=a.sum_num)
from #t a
order by 排名--处理完成后删除临时表
drop table #t
select p.name,sum_num=sum(od.num) --**** 上面这里写错了 ****
into #t
from product p
join orderdetail od on p.id=od.Productid
join orders o on o.id=od.Orderid
where o.yn=0 --假设0代表没有删除
and a.createtime=getdate() --统计今天--生成排名
select name,sum_num,排名=(
select count(distinct sum_num) from #t
where sum_num>=a.sum_num)
from #t a
order by 排名--处理完成后删除临时表
drop table #t
select count(distinct sum_num)
from (
select p.name,sum_num=sum(od.num)
from product p
join orderdetail od on p.id=od.Productid
join orders o on o.id=od.Orderid
where o.yn=0 --假设0代表没有删除
and a.createtime=getdate() --统计今天
)aa where aa.sum_num>=a.sum_num)
from(
select p.name,sum_num=sum(od.num)
from product p
join orderdetail od on p.id=od.Productid
join orders o on o.id=od.Orderid
where o.yn=0 --假设0代表没有删除
and a.createtime=getdate() --统计今天
)a order by 排名