我创建了一个触发器。当我更新一行之前，触发器不起作用。稍后，当我第二次更新行时触发器正在工作。为什么以前不工作？
CREATE TRIGGER trg_update_em_z_module_mod_codes
before UPDATE
ON emlakmuayene.em_z_module
FOR EACH ROW
EXECUTE PROCEDURE emlakmuayene.update_em_z_module_mod_codes();
CREATE OR REPLACE FUNCTION emlakmuayene.update_em_z_module_mod_codes()
RETURNS trigger AS
$BODY$
BEGIN
if (TG_OP = 'UPDATE') then
if new.mod_codes_ids is not null then
new.mod_codes=
(
SELECT translate(array_Agg(pages)::Text,'{}','') as mod_codes
FROM emlakmuayene.em_z_module t1
join emlakmuayene.em_z_order_pages_view t2
on t2.id_seq_x = any ( ('{'||t1.mod_codes_ids||'}')::bigint[]) where t1.id_Seq_X=new.id_seq_x group by t1.id_Seq_X );
end if ;
end if;
RETURN new;
END;
$BODY$
LANGUAGE plpgsql VOLATILE
COST 100;
答案 0 :(得分：0)
添加我的触发器IF pg_trigger_depth() <> 1 THEN RETURN NEW;后
并改变我的
update sql update emlakmuayene.em_z_module t1
set mod_codes = t2.mod_codes ,reg=1
from (
SELECT t1.id_Seq_x ,translate(array_Agg(pages)::Text,'{}','') as mod_codes
FROM emlakmuayene.em_z_module t1
join emlakmuayene.em_z_order_pages_view t2
on t2.id_seq_x = any ( ('{'||t1.mod_codes_ids||'}')::bigint[])
where t1.id_seq_x=new.id_seq_x
group by t1.id_Seq_X
) t2
where t1.id_seq_x=T2.id_seq_x;正在运行
然后我的触发器
CREATE OR REPLACE FUNCTION emlakmuayene.update_em_z_module_mod_codes()
RETURNS trigger AS
$BODY$
BEGIN
IF pg_trigger_depth() <> 1 THEN
RETURN NEW;
END IF;
update emlakmuayene.em_z_module t1 set mod_codes = t2.mod_codes ,reg=1
from (
SELECT t1.id_Seq_x ,translate(array_Agg(pages)::Text,'{}','') as mod_codes
FROM emlakmuayene.em_z_module t1
join emlakmuayene.em_z_order_pages_view t2
on t2.id_seq_x = any ( ('{'||t1.mod_codes_ids||'}')::bigint[])
where t1.id_seq_x=new.id_seq_x
group by t1.id_Seq_X
) t2
where t1.id_seq_x=T2.id_seq_x;
return new;
END;
$BODY$
LANGUAGE plpgsql VOLATILE
COST 100;
ALTER FUNCTION emlakmuayene.update_em_z_module_mod_codes()
OWNER TO tuvimer_ortak