CREATE FUNCTION [dbo].[svf_FindPosition] (
  @Target NVARCHAR(4000),
  @ListSource NVARCHAR(4000),
  @Delimit NVARCHAR(1) = N','
)
RETURNS INT 
AS
BEGIN
   DECLARE @i INT,@Position INT,@Entry NVARCHAR(4000)
   IF LEN(ISNULL(@Target,N'')) = 0 OR LEN(ISNULL(@ListSource,N'')) = 0
   BEGIN
      RETURN 0
   END
 
   SET @Position = 1
   WHILE 1 = 1 
   BEGIN
       SET @i = CHARINDEX(@Delimit, @ListSource)
       IF @i = 0
          IF @Target = @ListSource
             break
          ELSE
             RETURN 0
 
       SET @Entry = SUBSTRING(@ListSource,1,@i - 1)
       SET @ListSource = SUBSTRING(@ListSource,@i + 1, LEN(@ListSource))
       IF @Target = @Entry
          break
 
       set @Position = @Position + 1
   END
 
   RETURN @Position
END