SQL将一个字段内用逗号分隔的内容分成多条记录

由于业务需求，我们可能会把一串以分割符字符串数据放到一个字段，如我们在客户端处理拆分是很简单的，不过这样做效果不太好，怎么用SQL SERVER 2008 来解决这件事件哪？

方案1

用SQL SERVER XML 功能来解决

1 ----> 生成测试数据: @T
2  DECLARE @T TABLE (id INT,Col1  VARCHAR(50),Col2 VARCHAR(50))
3  INSERT INTO @T
4  SELECT 1,'卸货费','运输车队业务, 客服接单业务'
5  UNION ALL
6  SELECT 2,'报关费','报关业务、客服接单业务'

----SQL查询如下:

SELECT
T.id,
A.x.value('.','varchar(10)') AS code,
B.x.value('.','varchar(10)') AS code2
FROM (
SELECT *,doc = CONVERT(xml,'<v>'+REPLACE(code,',','</v><v>')+'</v>'),
doc2=CONVERT(xml,'<v>'+REPLACE(code2,',','</v><v>')+'</v>')
FROM @T
) AS T
CROSS APPLY doc.nodes('//v') AS A(x)
CROSS APPLY doc2.nodes('//v') AS B(x)

方案2

用SQL SERVER WITH 递归查询

1 WITH    roy
2           AS ( SELECT   Col1 ,
3                         COl2 = CAST(LEFT(Col2, CHARINDEX(',', Col2 + ',') - 1) AS NVARCHAR(100)) ,
4                         Split = CAST(STUFF(COl2 + ',', 1,
5                                            CHARINDEX(',', Col2 + ','), '') AS NVARCHAR(100))
6                FROM     Tab
7                UNION ALL
8                SELECT   Col1 ,
9                         COl2 = CAST(LEFT(Split, CHARINDEX(',', Split) - 1) AS NVARCHAR(100)) ,
10                         Split = CAST(STUFF(Split, 1, CHARINDEX(',', Split), '') AS NVARCHAR(100))
11                FROM     Roy
12                WHERE    split > ''
13              )
14     SELECT  COl1 ,
15             COl2
16     FROM    roy
17     ORDER BY COl1
18 OPTION  ( MAXRECURSION 0 )