oracle触发器实践(增,改,删)
oracle触发器实践(增,改,删)
实现对某个表的增改删的监控操作,并记录到另一个表中...
具体代码如下:
Sql代码
create or replace trigger test_trigger
before insert or update or delete on test_table
for each row
declare
v_id varchar2(30);
v_bdlb varchar2(1);
v_jgdm VARCHAR2(12);
v_jgmc VARCHAR2(60);
v_gajgmc VARCHAR2(60);
v_gajgwsmc VARCHAR2(30);
v_jz VARCHAR2(30);
v_ksdwsdwmc VARCHAR2(30);
begin
/*
插入时往历史表中存放的是新插入的数据.
修改时往历史表中存放的是修改后的数据.
删除时往历史表中存放的是删除之前的数据.
*/
select org_id_s.nextval into v_id from dual; -- 利用seq生成主键
v_jgdm := :new.row_id;
v_jgmc := :new.dept_name;
v_gajgmc := :new.dept_name;
v_gajgwsmc := :new.bmjc;
v_jz := substr(v_jgdm, 7, 2);
if '2' = :new.depttype then
v_ksdwsdwmc := 'shiju';
else
if '03' = v_jz then
v_ksdwsdwmc := 'zhi';
elsif '05' = v_jz then
v_ksdwsdwmc := 'xing';
elsif '51' = v_jz then
v_ksdwsdwmc := 'she';
else
v_ksdwsdwmc := 'qita';
end if;
end if;
if inserting then
v_bdlb := '1';
insert into test_table_h
(id, bdlb, jgdm, jgmc, gajgmc, gajgwsmc, jz, ksdwsdwmc)
values
(v_id,
v_bdlb,
v_jgdm,
v_jgmc,
v_gajgmc,
v_gajgwsmc,
v_jz,
v_ksdwsdwmc);
elsif updating then
v_bdlb := '2';
insert into test_table_h
(id, bdlb, jgdm, jgmc, gajgmc, gajgwsmc, jz, ksdwsdwmc)
values
(v_id,
v_bdlb,
v_jgdm,
v_jgmc,
v_gajgmc,
v_gajgwsmc,
v_jz,
v_ksdwsdwmc);
else
v_bdlb := '3';
v_jgdm := :old.row_id;
v_jgmc := :old.dept_name;
v_gajgmc := :old.dept_name;
v_gajgwsmc := :old.bmjc;
v_jz := substr(v_jgdm, 7, 2);
if '2' = :old.depttype then
v_ksdwsdwmc := 'shiju';
else
if '03' = v_jz then
v_ksdwsdwmc := 'zhi';
elsif '05' = v_jz then
v_ksdwsdwmc := 'xing';
elsif '51' = v_jz then
v_ksdwsdwmc := 'she';
else
v_ksdwsdwmc := 'qita';
end if;
end if;
insert into test_table_h
(id, bdlb, jgdm, jgmc, gajgmc, gajgwsmc, jz, ksdwsdwmc)
values
(v_id,
v_bdlb,
v_jgdm,
v_jgmc,
v_gajgmc,
v_gajgwsmc,
v_jz,
v_ksdwsdwmc);
end if;
end;
