SQL SplitString function

/*while set ANSI_NULLS on, select * from table1 where column_name1=NULL will return 0 row, select * from table1 where column_name1<>NULL will return 0 row, no matter column_name1 contains null value or not.*/ 

/*while set ANSI_NULLS off, select * from table1 where column_name1=NULL will return null rows, select * from table1 where column_name1<>NULL will return not null rows, select * from table1 where column_name1<>value1 will return not equal value1 and not null.*/ 

SET ANSI_NULLS ON GO 

/*while set QUOTED_IDENTIFIER on, Identifiers can be delimited by double quotation marks, and text must be delimited by single quotes.*/ 

/*while set QUOTED_IDENTIFIER off, Identifier is not enclosed in quotes, and must comply with all Transact-SQL rules for identifiers.*/ 

SET QUOTED_IDENTIFIER ON
GO 
CREATE FUNCTION [dbo].[fn_SplitString]

( @String NVARCHAR(2000), 

  @Delimiter NVARCHAR(1) ) 

  RETURNS @ValueTable TABLE ([Value] NVARCHAR(2000), [Index] INT) 

BEGIN 

DECLARE @NextString NVARCHAR(2000) 

DECLARE @Pos INT 

DECLARE @NextPos INT 

DECLARE @Index INT 

DECLARE @LastChar NVARCHAR(1) 

SET @String = RTRIM(LTRIM(@String)) 

SET @NextString = '' 

SET @Index = 0 

SET @LastChar = RIGHT(@String,1) 

IF (@LastChar <> @Delimiter ) 

BEGIN 

SET @String = @String + @Delimiter 

END 

SET @Pos = CHARINDEX(@Delimiter, @String) 

SET @NextPos = 1 WHILE (@Pos <> 0) 

BEGIN 

SET @NextString = SUBSTRING(@String, 1, @Pos - 1) 

SET @NextString = RTRIM(LTRIM(@NextString)) 

INSERT INTO @ValueTable ( [Value], [Index]) VALUES (@NextString, @Index) 

SET @String = SUBSTRING(@String, @Pos + 1, LEN(@String)) 

SET @NextPos = @Pos 

SET @Pos = CHARINDEX(@Delimiter, @String) 

SET @Index = @Index + 1 

END RETURN 

END