1、插入表觸發器
create or replace trigger "editship" before
insert on "dtsj" for each row
declare mmsi int;
shipinfommsi int;
begin
select max("mmsi") into mmsi from "shipmaterial" s left join "material" m on s."id"=m."id"
where trim(m."name")=trim(:new.ydpth);
if mmsi is null then
select max(mmsi) into mmsi from "shipinfo" where trim("name")=trim(:new.ydpth);
if mmsi is null then
select max(mmsi) into mmsi from "shipinfo";
if mmsi is null then
mmsi:=1;
else
mmsi:=mmsi+1;
end if;
insert into "shipinfo"(mmsi,"name","shiptype","lat","lon","time","cog","sog")
values( mmsi,:new.ydpth,52,:new.wd,:new.jd,:new.sj,:new.fx,:new.sd);
else
update "shipinfo" set "shiptype"=52,"lat"=:new.wd,"lon"=:new.jd,"time"=:new.sj,"cog"=:new.fx,"sog"=:new.sd
where trim(mmsi)=trim(mmsi) and trim("name")=trim(:new.ydpth);
end if;
else
select max(mmsi) into shipinfommsi from "shipinfo" where trim("name")=trim(:new.ydpth);
if shipinfommsi is null then
insert into "shipinfo" (mmsi,"name","shiptype","lat","lon","time","cog","sog")
values( mmsi,:new.ydpth,52,:new.wd,:new.jd,:new.sj,:new.fx,:new.sd);
else
update "shipinfo" set "shiptype"=52,"lat"=:new.wd,"lon"=:new.jd,"time"=:new.sj,"cog"=:new.fx,"sog"=:new.sd
where trim(mmsi)=trim(mmsi) and trim("name")=trim(:new.ydpth);
end if;
end if;
insert into "shiphis"
(mmsi,"lat","lon","time","cog","sog")
values( mmsi,:new.wd,:new.jd,:new.sj,:new.fx,:new.sd);
end;
2、刪除觸發器
create or replace trigger "觸發器名稱（delete子表名by主表id）" before
delete on 主表名 for each row
begin
delete from bb where 子表中主表id=:old.主表主鍵id;
end;
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