mysql静态纵表变横表

Create table Class([Student] nvarchar(2),[Course] nvarchar(2),[Score] int)Insert Classselect N'张三',N'语文',78 union allselect N'张三',N'数学',87 union allselect N'张三',N'英语',82 union allselect N'张三',N'物理',90 union allselect N'李四',N'语文',65 union allselect N'李四',N'数学',77 union allselect N'李四',N'英语',65 union allselect N'李四',N'物理',85 Goselect     [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]