declare @sql varchar(2000),@condition varchar(2000)
  set @sql='' set @condition='where nclassid=36 and nexamid=19 and nschoolid=1'
  select @sql=@sql+'max(case scoursename when '''+scoursename+''' then descore else 0 end) '+scoursename+','
  from (select distinct scoursename from t_card_course 
  where id in (select ncourseid from t_card_examcou ''''+@condition+'''' )) a

exec('select name as 姓名,'+ @sql+ '   
       sum(descore) descore
into #temp
from
(
    select b.name ,a.descore,c.scoursename
    from t_card_score a,t_stu b,t_card_course c,t_card_examcou d
    where
    a.nstuid=b.id and
    a.ncouexamid in (select id from t_card_examcou '''+@condition+''') and
    a.ncouexamid=d.id and 
    d.ncourseid=c.id
    group by b.name,a.descore,c.scoursename
)as a
group by name

select *,place=(select count(descore) from #temp where descore>x.descore)+1
from #temp x
order by place
')
 

--动态语句语法
/******************************************************************************************************************************************************
动态语句语法:exec\sp_executesql语法

整理人：中国风(Roy)

日期:2008.06.06
******************************************************************************************************************************************************/
动态语句语法:

--方法1查询表改为动态
select * from sysobjects
exec('select ID,Name from sysobjects')
exec sp_executesql N'select ID,Name from sysobjects'--多了一个N为unicode

--方法2:字段名，表名，数据库名之类作为变量时,用动态SQL 
declare @FName varchar(20)
set @FName='ID'
exec('select '+@FName+' from sysobjects where '+@FName+'=5' )


declare @s varchar(1000)
set @s=N'select '+@FName+' from sysobjects where '+@FName+'=5'
exec sp_executesql @s--会报错


declare @s nvarchar(1000)--改为nvarchar
set @s=N'select '+@FName+' from sysobjects where '+@FName+'=5'
exec sp_executesql @s--成功


--方法3:输入参数

declare @i int,@s nvarchar(1000)
set @i=5
exec('select ID,Name from sysobjects where ID='+@i)

set @s='select ID,Name from sysobjects where ID=@i'
exec sp_executesql @s,N'@i int',@i--此处输入参数要加上N

--方法4:输出参数

declare @i int,@s nvarchar(1000)
set @s='select @i=count(1) from sysobjects'

--用exec
exec('declare @i int '+@s+' select @i')--把整个语句用字符串加起来执行

--用sp_executesql
exec sp_executesql @s,N'@i int output',@i output--此处输出参数要加上N
select @i


--方法5:输入输出

--用sp_executesql
declare @i int,@con int,@s nvarchar(1000)
set @i=5
select @s='select @con=count(1) from sysobjects where ID>@i'
exec sp_executesql @s,N'@con int output,@i int',@con output ,@i 
select @con

--用exec
declare @i int,@s nvarchar(1000)
set @i=5
select @s='declare @con int select @con=count(1) from sysobjects where ID>'+rtrim(@i)+' select @con'
exec(@s)

------解决方案--------------------
太長了。。。
select @sql=@sql+'max(case scoursename when '''+scoursename+''' then descore else 0 end) '+scoursename+','
 from (select distinct scoursename from t_card_course  
 where id in (select ncourseid from t_card_examcou ''''+@condition+'''' )) a
這一段也屬于一個動態的sql,應該也是需要exec（@sql）才能把這一段的值賦給@sql,帶到下一段。
可在每次exec前先print @sql查看該語句是否符合預期。

------解决方案--------------------
SQL code

  declare @sql varchar(2000),@condition varchar(2000)
  set @sql='' set @condition='where nclassid=36 and nexamid=19 and nschoolid=1'
  select @sql=@sql+'max(case scoursename when '''+scoursename+''' then descore else 0 end) '+scoursename+','
  from (select distinct scoursename from t_card_course 
  where id in (select ncourseid from t_card_examcou '''+@condition+''' )) a

------解决方案--------------------
select ncourseid from t_card_examcou '''+@condition+'''