SQL CTE 递归分割以逗号分隔的字符串

declare @t table (id INT IDENTITY,sentence VARCHAR(2000))

INSERT INTO @t SELECT 'AAA,BBB,CCC'



SELECT * FROM @t 

 

 ;WITH mycte AS 

(

    SELECT id,sentence,mstart=1,mend=CHARINDEX(',',sentence)+1,num=1 FROM @t

    UNION ALL 

    SELECT id,sentence,mstart=mend,CHARINDEX(',',sentence+',',mend)+1,num=num+1 FROM mycte

    WHERE mend<=LEN(sentence)

)

SELECT STUFF(SUBSTRING(sentence,mstart,mend-mstart-1),1,0,'') sentence FROM mycte

如果由excel中直接复制过来的，可能在没一个项前会有换行符，替换方法为 replace  char(13) + char(10)

更简单的可以转换为xml数据格式

Create FUNCTION [dbo].[分隔字符] 

(

@str VARCHAR(8000),

@strSplit VARCHAR(10)

)

RETURNS 

@re TABLE 

(

id int IDENTITY(1,1),

col varchar(200)

)

AS

BEGIN

    

    DECLARE    @splitL int;

    SET @splitL=LEN(@strSplit+'a')-2

    WHILE CHARINDEX(@strSplit,@str)>0

    BEGIN

        INSERT @re(col)VALUES(LEFT(@str,CHARINDEX(@strSplit,@str)-1))

        SET @str=STUFF(@str,1,CHARINDEX(@strSplit,@str)+@splitL,'')        

    END

    INSERT INTO @re(col)VALUES(@str)

    RETURN 

END

split函数

 

以上代码由“土豆”提供，感谢