--创建表A,B: create table A (a1 varchar2(33),a2 varchar2(33),a3 varchar2(33)); create table B (b1 varchar2(33),b2 varchar2(33),b3 varchar2(33)); --插入数据 insert into A values('1','aa','100'); insert into A values('2','bb','100'); insert into A values('3',