Split function in SQL Server 2008

Question

I have Table1 with columns like this:

+--+------+
|ID|Name  |
+--+------+
|1 |MSSQL |
+--+------+
|2 |MySQl |
+--+------+
|3 |Oracle|
+--+------         


        

Answer 1

--Here it goes:

----------------
-- FieldCount --
----------------
CREATE FUNCTION [dbo].[FieldCount](@S VARCHAR(8000), @Separator VARCHAR(10))
  RETURNS INT
AS

BEGIN

  /*
  @Author: Leonardo Augusto Rezende Santos
  @Contact: http://www.linkedin.com/pub/leonardo-santos/0/2b1/890
  */

  DECLARE @Ptr INT, @p INT, @LenS INT, @LenSep INT, @Result INT

  IF @Separator = ' ' 
    BEGIN
      SET @S = REPLACE(@S, ' ', '|-|')
      SET @Separator = '|-|'
    END

  WHILE CHARINDEX(@Separator + @Separator, @S) > 0
    SET @S = Replace(@S, @Separator + @Separator, @Separator + '_-_' + @Separator)
  IF @S <> ''
    SET @Result = 1
  ELSE
    BEGIN
      SET @Result = 0
      RETURN(@Result)
    END
  SET @Ptr = 0
  SET @LenS = LEN(@S)
  SET @LenSep = LEN(@Separator)
  SET @p = CHARINDEX(@Separator, @S)
  WHILE @p > 0
    BEGIN
      SET @Result = @Result + 1
      SET @Ptr = @Ptr + @p + @LenSep
      SET @p = CHARINDEX(@Separator, SUBSTRING(@S, @Ptr, @LenS - @Ptr + 1))
    END

  RETURN(@Result)

END

--------------
-- GetField --
--------------
CREATE FUNCTION [dbo].[GetField](@S VARCHAR(8000), @Separator VARCHAR(10), @Field INT)
  RETURNS VARCHAR(8000)
AS

BEGIN

  /*
  @Author: Leonardo Augusto Rezende Santos
  @Contact: http://www.linkedin.com/pub/leonardo-santos/0/2b1/890
  */

  DECLARE @Ptr INT, @p INT, @LenS INT, @LenSep INT, @Fld INT, @Result VARCHAR(8000)

  IF @Separator = ' ' 
    BEGIN
      SET @S = REPLACE(@S, ' ', '|-|')
      SET @Separator = '|-|'
    END

  IF @Field > dbo.FieldCount(@S, @Separator)
    BEGIN
      SET @Result = ''
      RETURN(@Result)
    END
  SET @Fld = 1
  SET @Ptr = 1
  SET @LenS = LEN(@S)
  SET @LenSep = LEN(@Separator)
  SET @p = CHARINDEX(@Separator, @S)
  WHILE (@p > 0) and (@Fld < @Field)
    BEGIN
      SET @Fld = @Fld + 1
      SET @Ptr = @Ptr + @p + @LenSep - 1
      SET @p = CHARINDEX(@Separator, SUBSTRING(@S, @Ptr, @LenS - @Ptr + 1))
    END
  IF (@p = 0) and (@Fld = @Field)
    SET @p = @LenS - @Ptr + 2
  SET @Result = SUBSTRING(@S, @Ptr, @p - 1)

  RETURN(@Result)

END

/* USAGE*/

select dbo.FieldCount('A1 A2 A3 A4 A5', ' ')

--It will return 5

select dbo.GetField('A1 A2 A3 A4 A5', ' ', 3)

--It will return 'A3'

select dbo.GetField('A1/A2/A3/A4/A5', '/', 3)

--It will return 'A3'

--Hope it works for you.

--Leonardo Augusto