SQL Server实现纵表转横表的方法是什么？

  SQL Server实现纵表转横表的方法是什么？在SQL Server纵表和横表是可以互转的，大家可以更具自己想要的方式来展示表，下面我们就来看看怎样做纵表转横表以及横标转纵表。
 
    1，纵表转横表

 
    纵表转横表的SQL示例：
SELECT Name ,
SUM(CASE WHEN Course = N'语文' THEN Grade
ELSE 0
END) AS Chinese ,
SUM(CASE WHEN Course = N'数学' THEN Grade
ELSE 0
END) AS Mathematics ,
SUM(CASE WHEN Course = N'英语' THEN Grade
ELSE 0
END) AS English
FROM dbo.Table_A
GROUP BY Name
    2，横表转纵表
    横表结构Table_B：
 
 
    转换后的表结构：
 
 
    横表转纵表的SQL示例：
SELECT Name ,
'Chinese' AS Course ,
Chinese AS Score
FROM dbo.Table_B
UNION ALL
SELECT Name ,
'Mathematics' AS Course ,
Mathematics AS Score
FROM dbo.Table_B
UNION ALL
SELECT Name ,
'English' AS Course ,
English AS Score
FROM dbo.Table_B
ORDER BY Name ,
Course DESC