将行转换为列 [英] conversion row to column

问题描述

quesid questext optionid得分表现

1 gdggf 1 10优秀

2 hghgkjhkjh 1 5优秀

3 ijk 2 12好
1 gdggf 3 3平均

1 gdggf 4 4差

1 gdggf 1 10优秀









可以将此表转换为



quesid questext非常好平均穷人

1 gdggf 20 0 3 4

2 hghgkjhkjh 5 0 0 0

3 ijk 0 12 0 0

quesid questext optionid score performance
1 gdggf 1 10 Excellent
2 hghgkjhkjh 1 5 Excellent
3 ijk 2 12 Good
1 gdggf 3 3 Average
1 gdggf 4 4 Poor
1 gdggf 1 10 excellent




can i convert this table in to

quesid questext excelent good average poor
1 gdggf 20 0 3 4
2 hghgkjhkjh 5 0 0 0
3 ijk 0 12 0 0

推荐答案

嗨...



检查以下链接

行到SQL Server 2000中的列 [ ^ ]

将行转换为列的五种方法 [ ^ ]

将行转换为列 [ ^ ]



问候，

GVPrabu

Hi...

Check the following links
Rows to Columns in SQL Server 2000[^]
Five methods converting rows to columns[^]
Convert Rows to Columns[^]

Regards,
GVPrabu

检查：

Check this:

CREATE TABLE Aver(ques_id int,qtxt varchar(20),opid int,score int,performance varchar(30))

 insert into Aver values( 1,'gdggf',1,10,'Excellent'),( 2,'6t7ik,ikik',2,12,'Good'),(1,'gdggf',3,3,'Average'),(1,'gdggf',4,4,'Poor')


 select * from Aver
 declare @tab1e table(Id int,Qtxt varchar(20),Excellent int,Good int,Average int,Poor int)

 insert into @tab1e(ID)
 select distinct ques_id from Aver

update T set T.Qtxt=A.qtxt,T.Excellent=A.score from @tab1e T inner Join Aver A on A.ques_id=T.Id where A.performance='Excellent'
update T set T.Qtxt=A.qtxt,T.Good=A.score from @tab1e T inner Join Aver A on A.ques_id=T.Id where A.performance='Good'
update T set T.Qtxt=A.qtxt,T.Average=A.score from @tab1e T inner Join Aver A on A.ques_id=T.Id where A.performance='Average'
update T set T.Qtxt=A.qtxt,T.Poor=A.score from @tab1e T inner Join Aver A on A.ques_id=T.Id where A.performance='Poor'

select Id,Qtxt,case when Excellent is null then 0 else Excellent end 'Excellent',case when Good is null then 0 else Good end 'Good',
case when Average is null then 0 else Average end 'Average',case when Poor is null then 0 else Poor end 'Poor'from @tab1e

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