create table TB_NAME(id mediumint(9), name varchar(20));
alter table TB_NAME rename TB_NEW_NAME;
drop table TB_NAME;
alter table TB_NAME add COLUMN_NAME TYPE OPTION;
//alter table TB_NAME add NEW_COLUMN varchar(100) not null default 'NONE';
alter table TB_NAME drop COLUMN_NAME;
alter table TB_NAME change COLUMN_NAME COLUMN_NEW_NAME varchar(12);
alter table TB_NAME modify COLUMN_NAME TYPE
// alter table TB_NAME modify COLUMN_NAME varchar(14);