oracle 创建自动增加主键的表

create table t (pk number primary key,name varchar2(20));

create sequence t_seq ;

create trigger t_trigger before insert on t for each row

begin

select seq.nextval into :new.pk from dual;

end;

/

测试：select * from t;

未选定行

SQL> insert into t(name) values ('aa');

已创建 1 行。

SQL> select * from t;

PK NAME

---------- ----------------------------------------

1 aa

SQL> insert into t(name) values ('bb');

已创建 1 行。

SQL> select * from t;

PK NAME

---------- ----------------------------------------

1 aa

2 bb