sql 多行、一行 互转

1 IF OBJECT_ID(‘temp_20170701‘,‘u‘) IS NOT NULL DROP TABLE temp_20170701
2 
3  CREATE TABLE temp_20170701 (
4  ID INT PRIMARY KEY IDENTITY(1,1),
5  NAME  NVARCHAR(50),
6  Subjectname NVARCHAR(50),
7  Score INT
8  )

 1 INSERT dbo.temp_20170701( Name, subjectname, Score )
 2 SELECT ‘A‘,‘语文‘,‘20‘ UNION
 3 SELECT ‘A‘,‘数学‘,‘30‘ UNION
 4 SELECT ‘A‘,‘英语‘,‘40‘ UNION
 5 SELECT ‘B‘,‘语文‘,‘50‘ UNION
 6 SELECT ‘B‘,‘数学‘,‘60‘ UNION
 7 SELECT ‘B‘,‘英语‘,‘70‘ UNION
 8 SELECT ‘C‘,‘语文‘,‘80‘ UNION
 9 SELECT ‘C‘,‘数学‘,‘90‘ UNION
10 SELECT ‘C‘,‘英语‘,‘100‘ UNION
11 SELECT ‘D‘,‘英语‘,‘100‘

1 SELECT Name ,Score=STUFF((SELECT ‘,‘+CONVERT(NVARCHAR(max),Score) FROM temp_20170701 t1 WHERE t1.NAME=t2.NAME FOR XML PATH(‘‘)),1,1,‘‘)
2 FROM temp_20170701 t2 GROUP BY t2.NAME

1 CREATE TABLE temp_20170702 (
2 ID INT PRIMARY KEY IDENTITY(1,1),
3 NAME NVARCHAR(50),
4 Score varchar(100)
5 )

1 insert temp_20170702 (Name,Score)
2 select ‘A‘,‘30,40,20‘ union
3 select ‘B‘,‘60,70,50‘ union
4 select ‘C‘,‘90,100,80‘ union
5 select ‘D‘,‘100‘

1 select a.NAME,b.value as Score from (
2 select *,s=CONVERT(xml,‘<root><v>‘+REPLACE(Score,‘,‘,‘</v><v>‘)+‘</v></root>‘) from temp_20170702 
3 ) a outer apply 
4 (select value=n.s.value(‘.‘,‘varchar(100)‘) from a.s.nodes(‘/root/v‘) n(s)) b