建表:creat table student( stu_id int unsigned not null auto_increment, name varchar(32) not null default '', phone char(11) not null default '', stu_code varchar(32) not null default '', stu_desc text, primary key ('stu_id'), //主键索引 unique index 'stu_code' ('stu_code'), //唯一索引 index 'name_phone' ('name','phone'), //普通索引,复合索引 fulltext index 'stu_desc' ('stu_desc'), //全文索引) engine=myisam charset=utf8;更新:alert table student add primary key ('stu_id'), //主键索引 add unique index 'stu_code' ('stu_code'), //唯一索引 add index 'name_phone' ('name','phone'), //普通索引,复合索引 add fulltext index 'stu_desc' ('stu_desc'); //全文索引删除:alert table sutdent drop primary key, drop index 'stu_code', drop index 'name_phone', drop index 'stu_desc';