SQL 行列转换 PIVOT

ALTER proc [dbo].[PIVOT_Test] 
@year1 varchar(4),
@year2 varchar(4),
@year3 varchar(4),
@quarter varchar(2)
as
select column1,sum(column2) column2,year,month into #t1 from table1
where year in(@year1,@year2,@year3) 
and 1=case when isnull(@quarter,0)=0 then 1 
           when @quarter=1 and month in(1,2,3) then 1
           when @quarter=2 and month in(4,5,6) then 1
           when @quarter=3 and month in(7,8,9) then 1 
           when @quarter=4 and month in (10,11,12) then 1 end
group by column1,year,month

select column2 ,a.year,b.productcode,b.ProductValueCN into #t2 from #t1 a
left join table2 b on a.packagecode=b.packagecode
left join table3 c on a.packagecode=c.packagecode and c.Year=a.Year and c.Month=a.Month
where ProductCode is not null
group by a.year,b.productcode,b.ProductValueCN
--动态列转行
declare @sql varchar(max)
set @sql='select ProductCode+''(''+ProductValueCN+'')'' as ProductValueCN,isnull(['+@year1+']/1000,0) as year1,isnull(['+@year2+']/1000,0) as year2,isnull(['+@year3+']/1000,0) as year3 from #t2 
as p  PIVOT ( SUM(salescount) FOR year IN ('+'['+@year1+'],['+@year2+'],['+@year3+']'+') ) AS T order by ProductValueCN'
print @sql
exec (@sql)

drop table #t2
drop table #t1