首页 > 代码库 > Access and SQL Server 中的表转置

Access and SQL Server 中的表转置

  样表如下:

Student
IDsNameSubjectScore
1张三Chinese80
2张三Math90
3张三English85
4李四Chinese85
5李四Math92
6李四English82

    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
李四858292
张三808590


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)