Proper case in sql server

create function ProperCase(@Text 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(@Text))
   select @c= substring(@Text,@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

select dbo.ProperCase('this,my friends, is a test.wHat DO you think?i like shaquile o''neal')