SQL 行转列 列转行 PIVOT UNPIVOT

SELECT * FROM dbo.SC

--插入测试数据
INSERT dbo.SC        
SELECT NEWID(),‘001‘,‘jack1‘,‘数学‘,88
UNION
SELECT NEWID(),‘002‘,‘jack2‘,‘语文‘,55
UNION
SELECT NEWID(),‘003‘,‘jack3‘,‘英语‘,66
UNION
SELECT NEWID(),‘004‘,‘jack4‘,‘政治‘,77
--行转列
SELECT * FROM dbo.SC
PIVOT (SUM(Score) FOR SCName IN(语文,数学,英语,政治)) AS p

--列转行
SELECT * FROM (
    --这里是行转列
    SELECT sno,sname,ISNULL(语文,0) AS ‘语文‘,ISNULL(数学,0) AS ‘数学‘,ISNULL(英语,0) AS ‘英语‘,ISNULL(政治,0) AS ‘政治‘ FROM dbo.SC
    PIVOT (SUM(Score) FOR SCName IN(语文,数学,英语,政治)) AS p
) t
UNPIVOT (score FOR SCName IN(语文,数学,英语,政治)) AS up
WHERE score !=0

SELECT * FROM (
    --这里是行转列
    SELECT sno,sname,ISNULL(语文,0) AS ‘语文‘,ISNULL(数学,0) AS ‘数学‘,ISNULL(英语,0) AS ‘英语‘,ISNULL(政治,0) AS ‘政治‘ FROM dbo.SC
    PIVOT (SUM(Score) FOR SCName IN(语文,数学,英语,政治)) AS p
) t
UNPIVOT (Score11 FOR SCName22 IN(语文,数学,英语,政治)) AS up
WHERE Score11 !=0