Oracle 觸發器 插入,更新,刪除,數據同步,在同一個數據庫的兩表同步 :
建表語句:
create table User_Info (
ID INTEGER not null,
UserName VARCHAR(30) not null,
PassWord VARCHAR(20) not null,
CreateDate Date not null,
Status INTEGER not null,
constraint PK_User_Info primary key (ID)
);
create table User_Info_Temp (
ID INTEGER not null,
UserName VARCHAR(30) not null,
PassWord VARCHAR(20) not null,
CreateDate Date not null,
Status INTEGER not null,
constraint PK_User_Info_Temp primary key (ID)
);
觸發器寫法:
create or replace trigger UserToTemp after insert or update or delete
on user_info for each row
declare
integrity_error exception;
errno integer;
errmsg char(200);
dummy integer;
found boolean;
begin
if inserting then
insert into User_info_temp(ID,UserName,PassWord,CreateDate,Status) values(:NEW.ID,:NEW.UserName,:NEW.PassWord,:new.CreateDate,:NEW.Status);
elsif updating then
update User_info_temp set ID=:NEW.ID,UserName=:NEW.UserName,PassWord=:NEW.PassWord,Status=:NEW.Status where id=:OLD.id;
elsif deleting then
delete from User_info_temp where id=:OLD.id;
end if;
exception
when integrity_error then
raise_application_error(errno, errmsg);
end;
測試數據:
insert into user_info(ID,UserName,PassWord,CreateDate,Status)values(1,'hello','111',to_date('2015-08-11','yyyy-mm-dd'),1);
update user_info u set u.status=3,u.username='world' where u.id=1;
delete from user_info u where u.id=1;
+++++++++++++++++不同數據庫建的兩個表同步++++++++++++++++++++++++++++++++
在parking庫建User_Info表
在sfgl庫建User_Info_Temp表
----------------------------------------------------------
兩個數據庫的連接dblink: 在parking庫新建的
dblink_usertest 可以任意改,是個dblink連接名稱
sfgl/sfgl 數據庫的用戶名和密碼
orcl 數據庫連接標識符
create public database link dblink_usertest
connect to sfgl identified by sfgl
using 'orcl';
----------------------------------------------------------
觸發器: 新建在parking庫上的
create or replace trigger UserToTemp after insert or update or delete
on User_Info for each row
declare
integrity_error exception;
errno integer;
errmsg char(200);
dummy integer;
found boolean;
begin
if inserting then
insert into User_Info_Temp@dblink_usertest(ID,UserName,PassWord,CreateDate,Status) values(:NEW.ID,:NEW.UserName,:NEW.PassWord,:new.CreateDate,:NEW.Status);
elsif updating then
update User_Info_Temp@dblink_usertest set ID=:NEW.ID,UserName=:NEW.UserName,PassWord=:NEW.PassWord,Status=:NEW.Status where id=:OLD.id;
elsif deleting then
delete from User_Info_Temp@dblink_usertest where id=:OLD.id;
end if;
exception
when integrity_error then
raise_application_error(errno, errmsg);
end;
----------------------------------------------------------
select * from User_Info@dblink_usertest2;
select * from User_Info_Temp@dblink_usertest;