CREATE function [dbo].[Get_StrArrayStrOfIndex]

(

  @str nvarchar(max),  --要分割的字符串

  @split varchar(10),  --分隔符号

  @index int --取第几个元素

)

returns varchar(1024)

as

begin

  declare @location int

  declare @start int

  declare @next int

  declare @seed int

  set @str=ltrim(rtrim(@str))

  set @start=1

  set @next=1

  set @seed=len(@split)

  set @location=charindex(@split,@str)

  while @location<>0 and @index>@next

  begin

    set @start=@location+@seed

    set @location=charindex(@split,@str,@start)

    set @next=@next+1

  end

  if @location =0 select @location =len(@str)+1

 --这儿存在两种情况：1、字符串不存在分隔符号 2、字符串中存在分隔符号，跳出while循环后，@location为0，那默认为字符串后边有一个分隔符号。

  return substring(@str,@start,@location-@start)

end

GO

CREATE function [dbo].[Get_StrArrayLength]

(

  @str nvarchar(max),  --要分割的字符串

  @split varchar(10)  --分隔符号

)

returns int

as

begin

  declare @location int

  declare @start int

  declare @length int

  set @str=ltrim(rtrim(@str))

  set @location=charindex(@split,@str)

  set @length=1

  while @location<>0

  begin

    set @start=@location+1

    set @location=charindex(@split,@str,@start)

    set @length=@length+1

  end

  return @length

end

GO

CREATE  FUNCTION  [dbo].[SplitStringToTable]

(

     @String  nvarchar(4000),  --格式如：“1，2，3，4，”

     @SplitChar  nvarchar(10)  --分割的字符：“，”

)

RETURNS    @table  Table(ID  varchar(100))

AS

BEGIN

   DECLARE  @Index  INT

   SET  @Index  =  0  

        IF @String <> ''

        Begin

            IF RIGHT(@String,1)<> @SplitChar

                SET @String = @String + @SplitChar

            IF LEFT(@String,1)= @SplitChar

            SET @String = STUFF(@String, 1, 1, '')

        End

       WHILE  CHARINDEX(@SplitChar,@String,@Index)  >  0

       BEGIN

           INSERT INTO @table(ID)

               VALUES (SUBSTRING(@String, @Index, CHARINDEX(@SplitChar, @String,

                @Index) - @Index))

               SET @index = CHARINDEX(@SplitChar, @String, @Index) + 1 END

RETURN

END

GO