实现字符串分隔

用于实现字符串的分隔，新建一张表返回

create FUNCTION SEPERATIONSTRING
(
  @ARRAYSTR NVARCHAR(1000),--要分割的字符串
  @SEPRATESYMBOL NVARCHAR(10)--分隔符
)
RETURNS @TEMPTABLE TABLE (X NVARCHAR(100))
AS
BEGIN
  DECLARE @LI1 INT SET @LI1=1
  DECLARE @LI2 INT SET @LI2=1
  BEGIN
    IF @SEPRATESYMBOL IS NULL OR @SEPRATESYMBOL=''
        SET @SEPRATESYMBOL=','
    SET @ARRAYSTR = @ARRAYSTR + @SEPRATESYMBOL 
    WHILE @LI1>0
        BEGIN
          SET @LI1 = CHARINDEX(@SEPRATESYMBOL,@ARRAYSTR,@LI2)
            IF @LI1 = 0 BREAK
          INSERT INTO @TEMPTABLE VALUES(SUBSTRING(@ARRAYSTR,@LI2-1,@LI1))
          SET @ARRAYSTR=REPLACE(@ARRAYSTR,SUBSTRING(@ARRAYSTR,@LI2,@LI1),'')
        END
  END
  RETURN 
END
--执行
SELECT x FROM SEPERATIONSTRING('ASF,WER,SDFS,SD',',')

 结果：