以下不是修改表操作的是( )
drop table user;
alter table user add remark varchar(20);
alter table user character set utf8;
alter table user drop remark;
drop table是删除表
以下不是修改表操作的是( )
drop table user;
alter table user add remark varchar(20);
alter table user character set utf8;
alter table user drop remark;