日期:2014-05-18 浏览次数:20957 次
if not object_id('Class') is null drop table Class Go Create table Class([Student] nvarchar(2),[Course] nvarchar(2),[Score] int) Insert Class select N'张三',N'语文',78 union all select N'张三',N'数学',87 union all select N'张三',N'英语',82 union all select N'张三',N'物理',90 union all select N'李四',N'语文',65 union all select N'李四',N'数学',77 union all select N'李四',N'英语',65 union all select N'李四',N'物理',85 Go --2000方法: 动态: declare @s nvarchar(4000) set @s='' Select @s=@s+','+quotename([Course])+'=max(case when [Course]='+quotename([Course],'''')+' then [Score] else 0 end)' from Class group by[Course] exec('select [Student]'+@s+' from Class group by [Student]') 生成静态: select [Student], [数学]=max(case when [Course]='数学' then [Score] else 0 end), [物理]=max(case when [Course]='物理' then [Score] else 0 end), [英语]=max(case when [Course]='英语' then [Score] else 0 end), [语文]=max(case when [Course]='语文' then [Score] else 0 end) from Class group by [Student] GO 动态: declare @s nvarchar(4000) Select @s=isnull(@s+',','')+quotename([Course]) from Class group by[Course] exec('select * from Class pivot (max([Score]) for [Course] in('+@s+'))b') 生成静态: select * from Class pivot (max([Score]) for [Course] in([数学],[物理],[英语],[语文]))b 生成格式: /* Student 数学 物理 英语 语文 ------- ----------- ----------- ----------- ----------- 李四 77 85 65 65 张三 87 90 82 78 (2 行受影响) */
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