SQL server的一个分割表值函数

 CREATE FUNCTION [dbo].[Fn_Split]
 (
     @SplitString text, -- 如果要传入NText类型，下面需要相应的修改，注释行为NText下同
     @Separator varchar(2) = ','-- NVarChar(2) = N','
 )
 RETURNS @SplitStringsTable TABLE
 (
     [id] int identity(1,1),
     [value] varchar(8000) -- NVarChar(4000)
 )
 AS
 BEGIN
     --------@CurrentIndex记录当前的Index的值,@NextIndex记录字符串中下一个Index的值-------
     DECLARE @CurrentIndex int;
     DECLARE @NextIndex int;
     ------------@ReturnText:记录CurrentIndex处的字符到NextIndex之间的字符串-----------------
     DECLARE @ReturnText varchar(8000);-- NVarChar(4000)
     SELECT @CurrentIndex=1;----为@CurrentIndex赋初值
     WHILE(@CurrentIndex<=DATALENGTH(@SplitString)) -- DATALENGTH(@SplitString)/2
     BEGIN
         SELECT @NextIndex=CHARINDEX(@Separator,@SplitString,@CurrentIndex);
         IF(@NextIndex=0 OR @NextIndex IS NULL)
             SELECT @NextIndex=DATALENGTH(@SplitString)+1;--DATALENGTH(@SplitString)/2
         SELECT @ReturnText=SUBSTRING(@SplitString,@CurrentIndex,@NextIndex-@CurrentIndex);
         INSERT INTO @SplitStringsTable([value])
         VALUES(@ReturnText);
         SELECT @CurrentIndex=@NextIndex+1;
     END
     RETURN;
 END

EX:

SELECT FN.value
FROM fn_split('A/B/C/D/E', '/') FN