触发器

create or replace trigger singleFactorMethodtest
--after insert or update
after insert
on hm_v2_test
for each row
declare
cd_standard hm_standard.cd_standard%type;
hg_standard hm_standard.hg_standard%type;
dp_as_standard hm_standard.dp_as_standard%type;
cu_standard hm_standard.cu_standard%type;
pb_standard hm_standard.pb_standard%type;
cr_standard hm_standard.cr_standard%type;
zn_standard hm_standard.zn_standard%type;
ni_standard hm_standard.ni_standard%type;
begin
SELECT cd_standard INTO cd_standard FROM hm_standard;
SELECT hg_standard INTO hg_standard FROM hm_standard;
SELECT dp_as_standard INTO dp_as_standard FROM hm_standard;
SELECT cu_standard INTO cu_standard FROM hm_standard;
SELECT pb_standard INTO pb_standard FROM hm_standard;
SELECT cr_standard INTO cr_standard FROM hm_standard;
SELECT zn_standard INTO zn_standard FROM hm_standard;
SELECT ni_standard INTO ni_standard FROM hm_standard;
insert into hm_pollution_level values(:new.objectid,:new.cd/cd_standard,:new.hg/hg_standard,:new.dp_as/dp_as_standard,:new.cu/cu_standard,:new.pb/pb_standard,:new.cr/cr_standard,:new.zn/zn_standard,:new.ni/ni_standard);
end;

create or replace trigger singleFactorMethod_update
--after insert or update
after update
on hm_v2_test
for each row
declare
cd_standard hm_standard.cd_standard%type;
hg_standard hm_standard.hg_standard%type;
dp_as_standard hm_standard.dp_as_standard%type;
cu_standard hm_standard.cu_standard%type;
pb_standard hm_standard.pb_standard%type;
cr_standard hm_standard.cr_standard%type;
zn_standard hm_standard.zn_standard%type;
ni_standard hm_standard.ni_standard%type;
begin
SELECT cd_standard INTO cd_standard FROM hm_standard;
SELECT hg_standard INTO hg_standard FROM hm_standard;
SELECT dp_as_standard INTO dp_as_standard FROM hm_standard;
SELECT cu_standard INTO cu_standard FROM hm_standard;
SELECT pb_standard INTO pb_standard FROM hm_standard;
SELECT cr_standard INTO cr_standard FROM hm_standard;
SELECT zn_standard INTO zn_standard FROM hm_standard;
SELECT ni_standard INTO ni_standard FROM hm_standard;
update hm_pollution_level set cd_level=:new.cd/cd_standard,hg_level=:new.hg/hg_standard ,dp_as_level=:new.dp_as/dp_as_standard ,cu_level=:new.cu/cu_standard,pb_level=:new.pb/pb_standard,cr_level=:new.cr/cr_standard ,zn_level=:new.zn/zn_standard ,ni_level=:new.ni/ni_standard where objectid=:new.objectid;
end;

create or replace trigger singleFactorMethod_delete
--after insert or update
after delete
on hm_v2
for each row
begin
  delete from hm_pollution_level where objectid=:old.objectid;
end;

本文出自 “阿凡达” 博客，请务必保留此出处http://shamrock.blog.51cto.com/2079212/1315465