SQL Function to Display Text with Sentence Caps

Below Query creates a function to display the text in sentence caps, e.g.., displays 'ANANDH KUMAR' as 'Anandh Kumar'

CREATE FUNCTION [dbo].[ProperCase](@Input AS VARCHAR(8000))

RETURNS VARCHAR(8000)

AS

BEGIN

   DECLARE @Reset BIT;

   DECLARE @Ret VARCHAR(8000);

   DECLARE @i INT;

   DECLARE @c CHAR(1);

   SELECT @Reset = 1, @i=1, @Ret = '';

  

   WHILE (@i <= LEN(@Input))

      SELECT @c= SUBSTRING(@Input,@i,1),

               @Ret = @Ret + CASE WHEN @Reset=1 THEN UPPER(@c) ELSE LOWER(@c) END,

               @Reset = CASE WHEN @c LIKE '[a-zA-Z]' THEN 0 ELSE 1 END,

               @i = @i +1

              

   RETURN @Ret

END