---創建觸發器執行的函數 CREATE OR replace FUNCTION tri_assets_in_update() returns trigger as $$ beginIF (new.total_invt-OLD.total_invt) > 0 THENinsert into assets_in(code,ast_id,in_number,name,property,specs,brand,class,unit,location) values(new.code,NEW.id,new.total_invt-OLD.total_invt,NEW.name,NEW.property,NEW.specs,NEW.brand,NEW.class,NEW.unit,NEW.location); end if; return null; end; $$ language plpgsql;--創建觸發器本身 create trigger trigger_assets_in_updateafter update on assets_infoFOR EACH ROW execute procedure tri_assets_in_update();

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