-- 1、在plsql下先建立乙個專用的使用者
-- create the user
create user user1
identified by \"user1\"
default tablespace users
temporary tablespace temp
profile default;
-- grant/revoke role privileges
grant dba to user1;
-- grant/revoke system privileges
grant unlimited tablespace to user1;
------------------------------------
------------------------------------
-- 建表
create table aaa (
oid number not null,
type number(3)
);以下部分處理自增序列問題
--自增序列
--第一步：建乙個佇列
create sequenceaaa_oid_sequence
increment by 1 --每次加幾個
start with 1 --從1開始計數
nomaxvalue --不設定最大值
nocycle --一直累加，不迴圈
nocache ;
--第二步：建立觸發器
create or replace triggeraaa_oid_trigger
before insert onaaafor each row
declare
next_id number;
begin
--get the next id number from the sequence
selectaaa_oid_sequence.nextval into next_id from dual;
--use the sequence number as the primarykey
--for there cord being inserted.
:new.oid:=next_id;
end;
測試：insert into aaa (type) values (2);
select * from aaa;
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