行轉列操作,主要用到了Pivot

Pivot語法結構：

Pivot （A） for B in(C)

A：Max(Total)，表示要顯示的合計值，

B：Monthly，原始資料的列頭，就是要把它的資料轉化為列的欄位的名字

C：動態列 B的資料內容

資料表指令碼如下:

CREATE TABLE [dbo].[StudentScore](
	[UserNo] [varchar](50) NOT NULL,
	[UserName] [varchar](50) NOT NULL,
	[Course] [varchar](60) NOT NULL,
	[Score] [int] NOT NULL
) ON [PRIMARY]
 

INSERT [dbo].[StudentScore] ([UserNo], [UserName], [Course], [Score]) VALUES (N'001', N'張三', N'語文', 90)

INSERT [dbo].[StudentScore] ([UserNo], [UserName], [Course], [Score]) VALUES (N'001', N'張三', N'數學', 85)
    INSERT [dbo].[StudentScore] ([UserNo], [UserName], [Course], [Score]) VALUES (N'001', N'張三', N'英文', 88)
    INSERT [dbo].[StudentScore] ([UserNo], [UserName], [Course], [Score]) VALUES (N'002', N'李四', N'英文', 60)
    INSERT [dbo].[StudentScore] ([UserNo], [UserName], [Course], [Score]) VALUES (N'002', N'李四', N'語文', 99)
    INSERT [dbo].[StudentScore] ([UserNo], [UserName], [Course], [Score]) VALUES (N'002', N'李四', N'數學', 100)

行轉列指令碼如下:

DECLARE @Course	VARCHAR(400),
		@SQL	VARCHAR(4000)

--獲取課程列
SELECT @Course = ISNULL(@Course+',','')+ QUOTENAME([Course]) FROM StudentScore GROUP BY Course

--行轉列
SET @SQL = 'SELECT * FROM StudentScore PIVOT(SUM([Score]) FOR Course IN('[email protected]+'))A ORDER BY A.UserNo'
EXEC(@SQL)

--行轉列並增加彙總
SET @SQL = 'SELECT UserNo,UserName,'
 
[email protected]+',[總成績] FROM  (SELECT *,[總成績]=SUM(Score) OVER (partition by UserNo) FROM StudentScore) A PIVOT (MAX(Score) FOR [Course] IN('[email protected]+'))B'

EXEC(@sql)