Access and SQL Server 中的表转置

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样表如下：StudentIDsNameSubjectScore

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)