Access and SQL Server 中的表转置

  样表如下:

Student
IDsNameSubjectScore
1 张三 Chinese 80
2 张三 Math 90
3 张三 English 85
4 李四 Chinese 85
5 李四 Math 92
6 李四 English 82

    Access:

TRANSFORM Avg(Student.Score) AS ScoreOfAvg
SELECT Student.sName
FROM Student
GROUP BY Student.sName
PIVOT Student.Subject;

  

 SQL Server:  

Select sName,
Avg(case when Subject=‘Chinese‘ then Score end) As ‘Chinese‘,
Avg(case when Subject=‘English‘ then Score end) As ‘English‘,
Avg(case when Subject=‘Math‘ then Score end) As ‘Math‘
From Student
Group By sName

 
sNameChineseEnglishMath
李四 85 82 92
张三 80 85 90


升级版:

declare @s varchar(8000),@l varchar(8000)
Set @s=‘‘
Select @s=@s +‘, Avg(case Subject when ‘‘‘+ Subject+‘‘‘ then Score else 0 end) As [‘+Subject+‘]‘ From Student Group By Subject
Set @l=‘Select sName‘ +@s+‘From Student Group By sName ORDER BY sName‘
Exec (@l)

  

Access and SQL Server 中的表转置,古老的榕树,5-wow.com

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