uid int unsigned default 0 auto_increment,

gid int unsigned default 0,

depth varchar(255) default 'A',

name varchar(20) not null,

email varcher(50),

passwd varcher(10) not null,

suject varcher(255) not null,

article text not null,

writedate char(10) not null,

refnum int unsigned default 0,

Primary key(uid)

);

이렇게 작성했는데요