两张表的的结构如下,需求是写出从one表到two表和从two表到one表的查询转换。 create table student_one( name varchar(50) default '' not null, type varchar(10) not null default 0, score float(5,2) not null default 0.00 )Engine=innodb; create table student_two( name varchar(50) default '' not null, math float(5,2) not null default 0.00, english float(5,2) not null default 0.00, chinese float(5,2) not null default 0.00 )Engine=innodb; 目前表中数据如下所示 以表one为基准查出表two的格式的语句如下: select a.name,a.score as 'math',b.score as 'chinese',c.score as 'english' from student_one a join student_one b join student_one c on a.name=b.name and a.name=c