private static void showRS(ResultSet rs, int num)
	{
		try {
			while ( rs.next() ) 
			{
				ResultSetMetaData rsmd = rs.getMetaData();
				
				for(int i = 1; i<=num; ++i)
				{
					System.out.print(rsmd.getColumnName(i) + ":" + rs.getString(i) + " ;");
				}
				System.out.println("");
			}
		} 
		catch (SQLException e) 
		{
			System.out.println("Fehler!");
		} 
		catch (Exception e)
		{
			System.out.println(e.getMessage());
		}
		
	}