经典sql
行转列：
--测试数据
create table 基础表(姓名 nvarchar(10),课程名 nvarchar(20),成绩 decimal(10,1))
insert 基础表 select '王家喜','计算机基础',69.0
union all select '王家喜','邓小平理论',74.0
union all select '王家喜','英语（上）',86.0
union all select '王家喜','普通逻辑学',91.0
union all select '施春林','立法学教程',60.0
union all select '施春林','经管原理' ,73.0
union all select '施春林','英语（上）',73.0
union all select '施春林','普通逻辑学',90.0
go
--查询
declare @s varchar(8000),@i varchar(10)
select top 1 @s='',@i=count(*)
from 基础表 group by 姓名 order by count(*) desc
while @i>0
select @s=',[课程'+@i+']=max(case when id='+@i+' then 课程名 else '''' end),
[成绩'+@i+']=max(case when id='+@i+' then 成绩 end)'+@s ,@i=@i-1
exec(' select 姓名,课程名,成绩,id=0 into #t from 基础表 order by 姓名
declare @i int,@姓名 varchar(10)
update #t set @i=case when @姓名=姓名 then @i+1 else 1 end,id=@i,@姓名=姓名
select 姓名'+@s+' from #t group by 姓名')
go
--删除测试
select * from table_goods
drop table 基础表
select * from table_goods
declare @str varchar(1000)
set @str='select id,visit '
select @str=@str+',min(case when goods='+ Cast(goods As Varchar) +' then goods_id else Null end) as goods_id'+ Cast(goods As Varchar)
+',min(case when goods='+ Cast(goods As Varchar) +' then name else Null end) as goods'+ Cast(goods As Varchar)
from table_goods group by goods
select @str=@str+' from table_goods group by id,visit order by id,visit'
print @str exec(@str)
select id,visit ,max(case when goods=1 then goods_id else Null end) as goods_id1,
max(case when goods=1 then name else Null end) as goods1,
max(case when goods=2 then goods_id else Null end) as goods_id2,
max(case when goods=2 then name else Null end) as goods2,
max(case when goods=3 then goods_id else Null end) as goods_id3,
max(case when goods=3 then name else Null end) as goods3,
max(case when goods=4 then goods_id else Null end) as goods_id4,
max(case when goods=4 then name else Null end) as goods4
from table_goods
group by id,visit order by id,visit