alter table T_SUPERVISE_021_GUARD_MAIN add(creator varchar2(32),creatime date,updater varchar2(32),updatime date,isdeleted char(1));

增加注释

comment on column T_BUSINESS_030_DIRECTBAR.creator is '创建者';
comment on column T_BUSINESS_030_DIRECTBAR.creatime is '创建时间';

comment on column T_BUSINESS_104_HELP_PAGE.updater is '修改者';
comment on column T_BUSINESS_104_HELP_PAGE.updatime is '修改时间';
comment on column T_BUSINESS_104_HELP_PAGE.isdeleted is '是否删除';