alter table

Hi all !
I want to modify tb_guest table.

create table  tb_guest  (
   date     varchar(8)     not null,
   time     varchar(6)     not null,
   name     varchar(20) not null,
   url      varchar(25),
   ip       varchar(15),
   browser  varchar(50),
   email    varchar(40),
   home     varchar(50),
   content  varchar(2000)
);

home varchar(50)   =>  home varchar(80)

Thanks for your reading.

With Best Regards,
CHOI JINBAEK.