拆分字符串的自定义SQL函数，返回包含拆分后各子符的表
ALTER FUNCTION [dbo].[func_StrSplit] (
/* 待拆分的字符串 */
@origStr varchar(7000),
/* 拆分标记，如',' */
@markStr varchar(100)
)
RETURNS @splittable table /*返回一个表*/
(
/* 编号ID */
str_id varchar(4000) NOT NULL,
/* 拆分后的字符串 */
string varchar(2000) NOT NULL
)
/************************************************************
*功能: 拆分字符串 *
*************************************************************/
AS
BEGIN
declare @strlen int,@postion int,@start int,@sublen int,@TEMPstr varchar(200),@TEMPid int
SELECT @strlen=LEN(@origStr),@start=1,@sublen=0,@postion=1,@TEMPstr='',@TEMPid=0
if(RIGHT(@origStr,1)<>@markStr )
begin
set @origStr = @origStr + @markStr
end
WHILE((@postion<=@strlen) and (@postion !=0))
BEGIN
IF(CHARINDEX(@markStr,@origStr,@postion)!=0)
BEGIN
SET @sublen=CHARINDEX(@markStr,@origStr,@postion)-@postion;
END
ELSE
BEGIN
SET @sublen=@strlen-@postion+1;
END
IF(@postion<=@strlen)
BEGIN
SET @TEMPid=@TEMPid+1;
SET @TEMPstr=SUBSTRING(@origStr,@postion,@sublen);
INSERT INTO @splittable(str_id,string) values(@TEMPid,@TEMPstr)
IF(CHARINDEX(@markStr,@origStr,@postion)!=0)
BEGIN
SET @postion=CHARINDEX(@markStr,@origStr,@postion)+1
END
ELSE
BEGIN
SET @postion=@postion+1
END
END
END
RETURN
END
