SQL行列转换2

--生产测试数据 if not object_id('Class') is null    drop table ClassGoCreate table Class([Student] nvarchar(2),[数学] int,[物理] int,[英语] int,[语文] int)Insert Classselect N'李四',77,85,65,65 union allselect N'张三',87,90,82,78godeclare @s nvarchar(4000),@s2 nvarchar(4000),@s3 nvarchar(4000),@s4 nvarchar(4000)select @s=isnull(@s+',','declare ')+'@'+rtrim(Colid)+' nvarchar(4000)',@s2=isnull(@s2+',','select ')+'@'+rtrim(Colid)+'='''+case when @s2 is not null then 'union all select' else ' select ' end+'  [科目]='''+quotename(Name,'''')+'''''',@s3=isnull(@s3,'')+'select @'+rtrim(Colid)+'=@'+rtrim(Colid)+'+'',''+quotename([Student])+''=''+quotename('+quotename(Name)+','''''''')  from Class ',@s4=isnull(@s4+'+','')+'@'+rtrim(Colid)from syscolumns whereid=object_id('Class') and Name not in('Student')--print @s+' '+@s2+' '+@s3+' exec('+@s4+')' 显示执行语句exec(@s+' '+@s2+' '+@s3+' exec('+@s4+')')/*科目   李四   张三---- ---- ----数学   77   87物理   85   90英语   65   82语文   65   78*/