UPDATETIME 默认时间为当前系统时间
触发器脚本如下:
create or replace trigger trigger_test
before insert or update on RANDOM_ORDERS for each row
begin
select sysdate into :new.UPDATETIME from dual;
end;
其中,trigger_test为触发器名称,RANDOM_ORDERS为表名,UPDATETIME为表中的字段名称
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根据不同的操作执行不同的操作脚本如下(RANDOM_ORDERS_copy 为RANDOM_ORDERS的复制表):
create or replace trigger trigger_tz before insert or update or delete
on RANDOM_ORDERS for each row
begin
if inserting then
select sysdate into :new.updatetime from dual;
elsif updating then
select sysdate into :new.updatetime from dual;
elsif deleting then
-- select into purchases_copy from old;
insert into RANDOM_ORDERS_copy(CUSTOMERID,PRODUCTID,ORDERDATE,UPDATETIME) values (:old.CUSTOMERID,:old.PRODUCTID,:old.ORDERDATE,:old.UPDATETIME);
end if;
end;