sql 多行、一行 互转

原始数据：

期望数据：

 IF OBJECT_ID('temp_20170701','u') IS NOT NULL DROP TABLE temp_20170701

  CREATE TABLE temp_20170701 (
  ID INT PRIMARY KEY IDENTITY(1,1),
  NAME  NVARCHAR(50),
  Subjectname NVARCHAR(50),
  Score INT
  )

 INSERT dbo.temp_20170701( Name, subjectname, Score )
 SELECT 'A','语文','' UNION
 SELECT 'A','数学','' UNION
 SELECT 'A','英语','' UNION
 SELECT 'B','语文','' UNION
 SELECT 'B','数学','' UNION
 SELECT 'B','英语','' UNION
 SELECT 'C','语文','' UNION
 SELECT 'C','数学','' UNION
 SELECT 'C','英语','' UNION
 SELECT 'D','英语',''

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

 

原始数据：

期望数据：

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

 insert temp_20170702 (Name,Score)
 select 'A','30,40,20' union
 select 'B','60,70,50' union
 select 'C','90,100,80' union
 select 'D',''

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